| URL | http://www.bco-dmo.org/dataset/671260 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/671260/data/download |
| Media Type | text/tab-separated-values |
| Created | December 27, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | Pore fluid chemistry from gravity cores |
Gravity core sampling took place at Dorado Outcrop off the west coast of Costa Rica in the Pacific Ocean during the R/V Atlantis cruise AT26-24. For more information about operations of this cruise see the cruise page which contains a link to the cruise report (AT26-24).
Phosphate, N+N, silicate, and NH4, were all run at Oregon State University using standard colorimetric techniques. Dissolved inorganic carbon (DIC) was run at Oregon State University using coulometry. Remaining elements were analyzed using Inductively Coupled Plasma Optical Emission Spectrophotometer (ICPOES). Comparison of Si measured via the two techniques shows an offset with the colorimetric results being ~7 uM higher than the ICP-OES results.
The data have not been processed further.
BCO-DMO Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* BD indicates Below Detection
* blank values replaced with no data value 'nd'
* added ,dive_date, dive_lat, dive_lon from information in the cruise report (Table 4)
Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.
Depth below sea floor of sample
depth below seafloor. Includes mbsf (meters below seafloor) and cmbsf (centimeters below seafloor).
Gravity core identifier
core number/identification, to be used with ice, rock and sediment cores
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Alvin submersible dive latitude; north is positive
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Alvin submersible dive longitude; east is positive
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Orthophosphate (phosphate, reactive phosphorus), Various units.
Nitrate and Nitrite, µM (micromolar) or µg-at NO3-N and NO2-N/l
Ammonium and ammonia concentration parameters in any body of fresh or salt water.
Stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC).
Stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC).
Delta 13C (d13C) is the ratio of stable isotopes 13C:12C, reported in parts per thousand (per mil, 0/00).
Ba (Barium). May be reported in parts per million, nanomoles per Liter, or other units. Refer to dataset metadata for units.
B (Boron) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Mn (Manganese) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Si (Silicon) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Sr (Strontium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Concentration of a trace element in seawater. Does not include trace metals and metaloids. Refer to dataset for element name and units.
Na (Sodium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Ca (Calcium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Mg (magnesium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
K (potassium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| James McManus | University of Akron (UAkron) | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/671242 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/671242/data/download |
| Media Type | text/tab-separated-values |
| Created | December 27, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | Pore fluid chemistry from push cores |
Push core sampling took place at Dorado Outcrop off the west coast of Costa Rica in the Pacific Ocean during the R/V Atlantis cruise AT26-24. For more information about operations of this cruise see the cruise page which contains a link to the cruise report (AT26-24).
Phosphate, N+N, silicate, and NH4, were all run at Oregon State University using standard colorimetric techniques. Dissolved inorganic carbon (DIC) was run at Oregon State University using coulometry. Remaining elements were analyzed using Inductively Coupled Plasma Optical Emission Spectrophotometer (ICPOES). Comparison of Si measured via the two techniques shows an offset with the colorimetric results being ~7 uM higher than the ICP-OES results.
The data have not been processed further.
BCO-DMO Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* BD indicates Below Detection
* blank values replaced with no data value 'nd'
* added ,dive_date, dive_lat, dive_lon from information in the cruise report (Table 4)
Capable of being performed in numerous environments, push coring is just as it sounds. Push coring is simply pushing the core barrel (often an aluminum or polycarbonate tube) into the sediment by hand. A push core is useful in that it causes very little disturbance to the more delicate upper layers of a sub-aqueous sediment.
Description obtained from: http://web.whoi.edu/coastal-group/about/how-we-work/field-methods/coring/
Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.
depth below seafloor. Includes mbsf (meters below seafloor) and cmbsf (centimeters below seafloor).
Gravity core identifier
core number/identification, to be used with ice, rock and sediment cores
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Alvin submersible dive latitude; north is positive
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Alvin submersible dive longitude; east is positive
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Orthophosphate (phosphate, reactive phosphorus), Various units.
Nitrate and Nitrite, µM (micromolar) or µg-at NO3-N and NO2-N/l
Ammonium and ammonia concentration parameters in any body of fresh or salt water.
Stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC).
Stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC).
Ba (Barium). May be reported in parts per million, nanomoles per Liter, or other units. Refer to dataset metadata for units.
B (Boron) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Mn (Manganese) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Si (Silicon) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Sr (Strontium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Concentration of a trace element in seawater. Does not include trace metals and metaloids. Refer to dataset for element name and units.
Na (Sodium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Ca (Calcium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Mg (magnesium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
K (potassium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| James McManus | University of Akron (UAkron) | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/671225 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/671225/data/download |
| Media Type | text/tab-separated-values |
| Created | December 27, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | Solid phase chemistry from push cores |
Push core sampling took place at Dorado Outcrop off the west coast of Costa Rica in the Pacific Ocean during the R/V Atlantis cruise AT26-24. For more information about operations of this cruise see the cruise page which contains a link to the cruise report (AT26-24).
Total inorganic carbon (TIC) was measured using coulometry and CaCO3 is calculated from this value. Organic carbon (OC) and nitrogen (N) were measured on a Perkin Elmer Series II 2400 CHNS/O analyzer. The Fe, Cr, Cu, Mn, and Zn represent results from dithionite extractions (see Roy et al., 2012, Continental Shelf Research, 54, 67-79). Metals were analyzed by Inductively Coupled Plasma Optical Emission Spectrophotometer (ICPOES) at the University of Akron. d13C was measured on a Carlo Erba NA-1500 elemental analyzer connected to a DeltaPlus XL mass spectrometer at Oregon State University.
The data have not been processed further.
BCO-DMO Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* BD indicates Below Detection
* blank values replaced with no data value 'nd'
* added dive_date,dive_id,dive_lat,dive_lon from information in the cruise report (Table 4)
Capable of being performed in numerous environments, push coring is just as it sounds. Push coring is simply pushing the core barrel (often an aluminum or polycarbonate tube) into the sediment by hand. A push core is useful in that it causes very little disturbance to the more delicate upper layers of a sub-aqueous sediment.
Description obtained from: http://web.whoi.edu/coastal-group/about/how-we-work/field-methods/coring/
Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.
Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.
Carlo Erba NA-1500 elemental analyzer connected to a DeltaPlus XL mass spectrometer.
Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.
core number/identification, to be used with ice, rock and sediment cores
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Approximate latitude of Alvin Dive.
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Approximate longitude of Alvin dive.
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Calcium Carbonate, in sediments as percent; or CaCO3 from water samples reported in various units; CAUTION measured in sediment and water column samples
Calcium Carbonate, in sediments as percent; or CaCO3 from water samples reported in various units; CAUTION measured in sediment and water column samples
Dissolved Inorganic Carbon
Dissolved Inorganic Carbon
Concentration of a trace element in seawater. Does not include trace metals and metaloids. Refer to dataset for element name and units.
Concentration of a trace element in seawater. Does not include trace metals and metaloids. Refer to dataset for element name and units.
Delta 13C (d13C) is the ratio of stable isotopes 13C:12C, reported in parts per thousand (per mil, 0/00).
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| James McManus | University of Akron (UAkron) | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/671199 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/671199/data/download |
| Media Type | text/tab-separated-values |
| Created | December 27, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | Solid phase chemistry from gravity cores |
Gravity core sampling took place at Dorado Outcrop off the west coast of Costa Rica in the Pacific Ocean during the R/V Atlantis cruise AT26-24. For more information about operations of this cruise see the cruise page which contains a link to the cruise report (AT26-24).
Total inorganic carbon (TIC) was measured using coulometry and CaCO3 is calculated from this value. Organic carbon (OC) and nitrogen (N) were measured on a Perkin Elmer Series II 2400 CHNS/O analyzer. The Fe, Cr, Cu, Mn, and Zn represent results from dithionite extractions (see Roy et al., 2012, Continental Shelf Research, 54, 67-79). Metals were analyzed by Inductively Coupled Plasma Optical Emission Spectrophotometer (ICPOES) at the University of Akron. d13C was measured on a Carlo Erba NA-1500 elemental analyzer connected to a DeltaPlus XL mass spectrometer at Oregon State University.
The data have not been processed further.
BCO-DMO Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* BD indicates Below Detection
* blank values replaced with no data value 'nd'
* added dive_id,dive_date,dive_lat, and dive_lon from information in the cruise report (Table 4)
Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.
Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.
Carlo Erba NA-1500 elemental analyzer connected to a DeltaPlus XL mass spectrometer.
Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.
Gravity core identifier
core number/identification, to be used with ice, rock and sediment cores
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Alvin submersible dive latitude; north is positive
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Alvin submersible dive longitude; east is positive
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Calcium Carbonate, in sediments as percent; or CaCO3 from water samples reported in various units; CAUTION measured in sediment and water column samples
Calcium Carbonate, in sediments as percent; or CaCO3 from water samples reported in various units; CAUTION measured in sediment and water column samples
Dissolved Inorganic Carbon
Dissolved Inorganic Carbon
Concentration of a trace element in seawater. Does not include trace metals and metaloids. Refer to dataset for element name and units.
Concentration of a trace element in seawater. Does not include trace metals and metaloids. Refer to dataset for element name and units.
Delta 13C (d13C) is the ratio of stable isotopes 13C:12C, reported in parts per thousand (per mil, 0/00).
Delta 13C (d13C) is the ratio of stable isotopes 13C:12C, reported in parts per thousand (per mil, 0/00).
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| James McManus | University of Akron (UAkron) | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/664454 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/664454/data/download |
| Media Type | text/tab-separated-values |
| Created | November 10, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | Chemistry from discrete samples of hydrothermal springs |
Syringe samples of hydrothermal water were collected during Alvin dives.
The Alvin dives were conducted off the west coast of Costa Rica in the Pacific Ocean at Dorado Outcrop during the R/V Atlantis cruise AT26-24. For more information about operations of this cruise see the cruise pages which contain links to cruise reports (AT26-24)
Chemical Measurements:
All fluids were measured using established standard protocols. At sea, alkalinity was determined potentiometrically via titration with 0.1N hydrochloric acid; a pH measurement is conducted as part of this procedure. An Inductively Coupled Plasma Optical Emission Spectrophotometer (ICPOES) was used to measure Na, K, Sr, Li, Mg, Ca, and S with a 1:200 dilution and Sr, Li, Fe, Mn, and B with a 1:25 dilution in 1% nitric acid. An inductively coupled plasma mass spectrometry (ICP-MS) was used to analyze Rb, Cs, Ba, Mo, V and U with a 1:75 dilution in 3% nitric acid. Nutrients (silicate, phosphate, total nitrogen and nitrate) were measured at Oregon State University using standard colorimetric, automated, segmented flow procedures. Chlorinity was determined potentiometrically via titration with silver nitrate. Carbon analyses were conducted at Oregon State University
The data have not been processed further.
BCO-DMO Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* added lat, lon, and date of Alvin dives as listed in the Alvin Dive Log
A device that collects an in-situ discrete water sample from any depth and returns it to the surface without contamination by the waters through which it passes, such as a water bottle.
Also referred to as an Inductively coupled plasma atomic emission spectroscope (ICP-AES). These instruments pass nebulised samples into an inductively-coupled gas plasma (8-10000 K) where they are atomised and excited. The de-excitation optical emissions at characteristic wavelengths are spectroscopically analysed. It is often used in the detection of trace metals.
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Alvin submersible dive latitude; north is positive
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Alvin submersible dive longitude; east is positive
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Sample identifier
unique sample identification or number; any combination of alpha numeric characters; precise definition is file dependent
Dissolved Inorganic Carbon
Dissolved Inorganic Carbon
Stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC).
Stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC).
Mo (Molybdenum) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
V (Vanadium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
A measure of chloride content (Cl).
Rb (rubidium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Cs (Cesium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
U (Uranium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Nitrate and Nitrite, µM (micromolar) or µg-at NO3-N and NO2-N/l
Sr (Strontium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Li (Lithium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Concentration of a trace element in seawater. Does not include trace metals and metaloids. Refer to dataset for element name and units.
Na (Sodium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Ca (Calcium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Mg (magnesium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
K (potassium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
B (Boron) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Mn (Manganese) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| James McManus | University of Akron (UAkron) | |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/664422 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/664422/data/download |
| Media Type | text/tab-separated-values |
| Created | November 10, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | DO of pore water from sediment gravity and push cores |
Sampling took place at Dorado Outcrop off the west coast of Costa Rica in the Pacific Ocean during the R/V Atlantis cruises AT26-09 and AT26-24. For more information about operations of this cruise see the cruise pages which contain links to cruise reports ( AT26-09, AT26-24).
Dissolved oxygen (DO) was measured at-sea in pore waters from sediment gravity cores and cores collected by the submersible ALVIN with a needle-type oxygen optode inserted radially into sediment cores, following published protocols (e.g., Orcutt et al., 2013).
Reference:
Orcutt, B. N., Wheat, C. G., Rouxel, O., Hulme, S., Edwards, K. J., Bach, W., 2013. Oxygen Consumption rates in subseafloor basaltic crust derived from a reaction transport model, Nature Comm., published 27 Sep 2013, pg. 1-8, doi:10.1038/ncomms3539.
The data have not been processed further.
BCO-DMO Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values replaced with no data value 'nd'
* added approximate lat/lon values for Dorado Outcrop sample site
Capable of being performed in numerous environments, push coring is just as it sounds. Push coring is simply pushing the core barrel (often an aluminum or polycarbonate tube) into the sediment by hand. A push core is useful in that it causes very little disturbance to the more delicate upper layers of a sub-aqueous sediment.
Description obtained from: http://web.whoi.edu/coastal-group/about/how-we-work/field-methods/coring/
Approximate latitude of Dorado Outcrop
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Approximate longitude of Dorado Outcrop
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Core identifier
core number/identification, to be used with ice, rock and sediment cores
Depth in core sample
Dissolved oxygen
Oxygen; dissolved; reported in units of micromoles/liter
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| James McManus | University of Akron (UAkron) | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/664335 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/664335/data/download |
| Media Type | text/tab-separated-values |
| Created | November 10, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | Discrete temperature and DO measured with Alvin |
Temperature measurements were made with the thermal couple on board the HOV Alvin. The dissolved oxygen concentrations were measured with an Aanderra optode.
The Alvin dives were conducted off the west coast of Costa Rica in the Pacific Ocean at Dorado Outcrop during the R/V Atlantis cruise AT26-24. For more information about operations of this cruise see the cruise pages which contain links to cruise reports (AT26-24)
The data have not been processed further.
BCO-DMO Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* added lat/lon of Alvin dives as listed in the Alvin Dive Log
Discrete measurements of temperature were made with the thermal couple on board the HOV Alvin.
Records temperature data over a period of time.
Dive identifier for Alvin dive
Date (UTC) in format yyyy-mm-dd
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Latitude of Alvin dive where measurement was taken
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Longitude of Alvin dive where measurement was taken; west is negative.
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Temperature
Dissolved oxygen
Oxygen; dissolved; reported in units of micromoles/liter
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| James McManus | University of Akron (UAkron) | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/662060 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/662060/data/download |
| Media Type | text/tab-separated-values |
| Created | October 20, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | DO and temperature from soloDO logger measured with Alvin |
In situ sensor data was collected by Alvin with the soloDO logger (RBR Ltd., Canada). The prototype recorded temperature using an internal RBR probe (0.0018 C resolution), and dissolved oxygen using an Aandera DO probe.
The R/V Atlantis cruise AT26-24 went to Dorado Outcrop off the west coast of Costa Rica in the Pacific Ocean at location 9 degrees 5.5 minutes north, 87 degrees 6.0 minutes west. For more information about operations of this cruise see the AT26-24 deployment page and cruise report.
The data have not been processed further.
BCO-DMO Processing Notes:
Prototype of the soloDO logger (RBR Ltd., Canada) also measured temperature.
Records temperature data over a period of time.
Prototype of the soloDO logger (RBR Ltd., Canada).
Instrument deployment name includes the order (first or second) of deployment and location; R indicates Marker R and KW indicates the deployment was between markers K and W.
Date/Time (UTC) ISO formatted
This standard is based on ISO 8601:2004(E) and takes on any of the following forms:
2009-08-30T09:05:00[.xx] (local time)
2009-08-30T14:05:00[.xx]Z (UTC time)
2009-08-30T14:05:00[.xx]-05:00
The dashes and the colons can be dropped.
The T can also be dropped "by mutual agreement", but one needs the trailing Z if the time is UTC.
Sample ISO_datetime_utc:
2009-08-30T14:05:00[.xx]Z (UTC time)
Temperature
Oxygen; dissolved; reported in units of micromoles/liter
Approximate latitude of sampling area (Dorado Outcrop)
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Approximate longitude of sampling area (Dorado Outcrop); west is negative
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Date (UTC) in format yyyy-mm-dd
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Time (UTC) in format HHMM
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| James McManus | University of Akron (UAkron) | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/661921 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/661921/data/download |
| Media Type | text/tab-separated-values |
| Created | October 19, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | Continuous temperature at marker K |
This temperature record was collected by a HOBO temperature logger deployed in conjunction with the green OsmoSampler that was deployed at Marker K. To access data from the OsmoSamplers see the OsmoSampler fluid chemistry dataset page. The temperature logger deployments were made off the west coast of Costa Rica in the Pacific Ocean at Dorado Outcrop during the R/V Atlantis cruise AT26-09 and recovered during the cruise AT26-24. For more information about operations of this cruise see the cruise pages which contain links to cruise reports (AT26-24, AT26-09)
The temperature logger was started before the deployment and was turned off upon recovery on the ship. Increased temperatures relating to deployment and retrieval can be seen in the data.
The data have not been processed further.
BCO-DMO Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values replaced with no data value 'nd'
* added approximate lat/lon values for Dorado Outcrop sample site
* ISO Date format generated from Date and Time values
Onset Computer Corporation HOBO model U12-015 modified with a titanium pressure case and long-life battery for use in the deep sea. The Onset tools have a working range of –40–100C but a lower resolution (0.02–0.1C across their working range)
Records temperature data over a period of time.
Date/time (UTC) in ISO format YYYY-mm-ddTHH:MM:SS[.xx]
Date/Time (UTC) ISO formatted
This standard is based on ISO 8601:2004(E) and takes on any of the following forms:
2009-08-30T09:05:00[.xx] (local time)
2009-08-30T14:05:00[.xx]Z (UTC time)
2009-08-30T14:05:00[.xx]-05:00
The dashes and the colons can be dropped.
The T can also be dropped "by mutual agreement", but one needs the trailing Z if the time is UTC.
Sample ISO_datetime_utc:
2009-08-30T14:05:00[.xx]Z (UTC time)
Approximate latitude of sampling area (Dorado Outcrop)
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
Approximate longitude of sampling area (Dorado Outcrop); west is negative
longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes
Date (UTC) in format yyyy-mm-dd
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| James McManus | University of Akron (UAkron) | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| URL | http://www.bco-dmo.org/dataset/661481 |
|---|---|
| Download URL | http://www.bco-dmo.org/dataset/661481/data/download |
| Media Type | text/tab-separated-values |
| Created | October 12, 2016 |
| Modified | July 3, 2017 |
| State | Final no updates expected |
| Brief Description | Spring and pore fluid chemistry from samples taken by OsmoSamplers |
Continuous fluid samplers (OsmoSamplers) included a 12-membrane pump and one coil of Teflon tubing that was 300-m-long and small bore (1.1 mm ID). The tubing was initially filled with 18 MΩ distilled water. Upon retrieval, the Teflon coil was cut in 1.1 m lengths and the fluid was expelled into hot acid cleaned plastic microcentrifuge tubes. For more information about OsmoSamplers see the instruments page.
The R/V Atlantis cruise AT26-09 (2013 Jason/Sentry Expedition) deployed the OsmoSamplers. They were deployed for almost a full year. The R/V Atlantis cruise AT26-24 recovered the OsmoSamplers. Dorado Outcrop is off the west coast of Costa Rica in the Pacific Ocean at location 9 degrees 5.5 minutes north, 87 degrees 6.0 minutes west. For more information about operations of this cruise see the expedition reports and cruise information (AT26-24, AT26-09).
Other than converting signal counts, voltages, etc. to concentrations, the data have not been processed further.
BCO-DMO Processing Notes:
* added conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* added fields for OsmoSampler_name, date_deployed, date_recovered, location (e.g. Marker_K) from information in comments of original files submitted.
* Date format converted to ISO Date format
OsmoSamplers are long-term osmotically pumped fluid samplers. For more information see the following reference:
Jannasch Hans W. , Wheat C. Geoff , Plant Josh N. , Kastner Miriam , Stakes Debra S. , (2004),Continuous chemical monitoring with osmotically pumped water samplers: OsmoSampler design and applications, Limnol. Oceanogr. Methods, 2, doi:10.4319/lom.2004.2.102.
A pump that uses osmotic pressure to collect water samples.
An example of an osmotic pump is an OsmoSampler (Jannasch et al., 2004) which has no electrical or mechanical parts.
References:
Jannasch Hans W. , Wheat C. Geoff , Plant Josh N. , Kastner Miriam , Stakes Debra S. , (2004),Continuous chemical monitoring with osmotically pumped water samplers: OsmoSampler design and applications, Limnol. Oceanogr. Methods, 2, doi:10.4319/lom.2004.2.102.
Name of the OsmoSampler Instrument
Date of OsmoSampler deployment in ISO format YYYY-mm-dd
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Date of OsmoSampler recovery in ISO format YYYY-mm-dd
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Sample number
unique sample identification or number; any combination of alpha numeric characters; precise definition is file dependent
Date of chemical analysis in ISO format YYYY-mm-dd
date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)
Standard deviation of dissolved inorganic carbon
Stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC).
Standard deviation of the stable carbon isotope ratio of dissolved inorganic carbon (13C/12C ratio in DIC)
V (Vanadium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Rb (rubidium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Mo (Molybdenum) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Cs (Cesium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Ba (Barium). May be reported in parts per million, nanomoles per Liter, or other units. Refer to dataset metadata for units.
U (Uranium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Silicon concentration
Si (Silicon) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Sr (Strontium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Li (Lithium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Concentration of a trace element in seawater. Does not include trace metals and metaloids. Refer to dataset for element name and units.
Na (Sodium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Ca (Calcium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Mg (magnesium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
K (potassium) concentration. May be reported in parts per million, nanomoles/Liter, or other units. Refer to dataset metadata for units.
Approximate latitude of sampling area Dorado Outcrop
latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes
| Name | Affiliation | Contact |
|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
| Beth N. Orcutt | Bigelow Laboratory for Ocean Sciences | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | |
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
| James McManus | University of Akron (UAkron) | |
| Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
| Project Title | Completing single- and cross-hole hydrogeologic and microbial experiments: Juan de Fuca Flank |
|---|---|
| Acronym | JdF Flank |
| URL | http://www.bco-dmo.org/project/625989 |
| Created | October 29, 2015 |
| Modified | November 17, 2015 |
In 2010, IODP exp. 327 launched series of experiments based on instrumentation placed in 6 boreholes (Holes 1026B, 1027C, 1301A, 1301B, 1362A, and 1362B) on and near the Juan de Fuca Ridge (JDFR). The experiments were designed to examine hydrological and biological processes in basaltic ocean crust. Major issues to be addressed include overall permeability, the magnitudes, velocity and directions of fluid, solute,and heat transport,constraints on the fluid storage properties of crust, determining how fluid reservoirs respond to seismic perturbations, and investigating the variability, diversity, and metabolism of resident microbial populations. This project will recover sensors and samplers in the instrumented boreholes(CORKs),access data and samples, collect biological incubators placed at depth within the boreholes, and seal the CORKs. All of these activities are needed for the completion of the JDFR experiments
Once the data and samples are retrieved, the PI's will develop new numerical models for the hydrology (permeability, thickness and extent of permeable zones, connectivity, direction of flow, and anisotropy) of ocean crust based on the results of flow tests. T sensors will enable thermal structure to be determined in conjunction with flow parameters. DNA will be analyzed via 16S ribosomal RNA (rRNA) genes as well as select full-length Sanger-style sequencing and gene fingerprinting techniques. The PI's will look at diversity, shared species, emergence and disappearance of groups. Metagenomic work will be done on some samples.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Lead Principle Investigator | ✓ |
| Katrina J. Edwards | University of Southern California (USC) | Principal Investigator | |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator | |
| Jordan F. Clark | University of California-Santa Barbara (UCSB) | Principal Investigator | |
| Keir Becker | University of Miami Rosenstiel School of Marine and Atmospheric Science (UM-RSMAS) | Principal Investigator | |
| Michael S. Rappé | University of Hawaii at Manoa (HIMB) | Co-Principal Investigator |
| Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
|---|---|
| Acronym | Dorado Outcrop |
| URL | http://www.bco-dmo.org/project/627844 |
| Created | November 30, 2015 |
| Modified | December 1, 2015 |
Description from NSF award abstract:
Pristine fluids from a typical ridge-flank hydrothermal system have never been sampled, mainly because it has not been possible to locate a site of focused discharge where representative samples could be collected. The PIs have located a small basement feature, Dorado outcrop, on 23 m.y.-old seafloor on the eastern flank of the East Pacific Rise that they plan to sample to determine the fluid composition, and to assess the rate of discharge from the outcrop, so that they can quantify the chemical impact of this hydrothermal system. They plan an 18-day expedition that combines the surveying capabilities of the AUV Sentry (bathymetric, sub-bottom sonar, photo mosaics, water column anomalies) and an ocean-class vessel capable of collecting high-quality multi-beam data and CTD samples, and supporting the survey and sampling capabilities of the ROV Jason II for collection of spring and plume fluids, heat flow data, sediment push cores, and still and video photography. These data and samples will be combined hopefully to generate the first well-constrained estimates of hydrothermal flows from Dorado outcrop. This expedition will result in the collection of samples and data from a "fire hose" of ridge-flank, hydrothermal system, challenging the commonly held view that discharge from ridge flank hydrothermal systems occurs primarily from diffuse seeps.
| Name | Affiliation | Role | Contact |
|---|---|---|---|
| Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator | |
| Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator | ✓ |
| Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
Numerous field, laboratory, and modeling studies have explored the flows of fluid, heat, and solutes during seafloor hydrothermal circulation, but it has been challenging to determine transport rates and flow directions within natural systems. Here we present results from the first cross-hole tracer experiment in the upper oceanic crust, using four subseafloor borehole observatories equipped with autonomous samplers to track the transport of a dissolved tracer (sulfur hexafluoride, SF6) injected into a ridge-flank hydrothermal system. During the first three years after tracer injection, SF6 was transported both north and south through the basaltic aquifer. The observed tracer transport rate of ∼2–3 m/day is orders of magnitude greater than bulk rates of flow inferred from thermal and chemical observations and calculated with coupled fluid-heat flow simulations. Taken together, these results suggest that the effective porosity of the upper volcanic crust through which much tracer was transported is <1%, with fluid flowing rapidly along a few well-connected channels. This is consistent with the heterogeneous (layered, faulted, and/or fractured) nature of the volcanic upper oceanic crust.
