URL | https://www.bco-dmo.org/dataset/664335 |
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Download URL | https://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 |
Acquisition Description
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)
Processing Description
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
Instruments
Discrete measurements of temperature were made with the thermal couple on board the HOV Alvin.
Records temperature data over a period of time.
Parameters
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
Dataset Maintainers
Name | Affiliation | Contact |
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Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF) | ✓ |
James McManus | University of Alaska Fairbanks (UAF) | ✓ |
Beth N. Orcutt | University of Akron (UAkron) | |
Andrew T. Fisher | University of Akron (UAkron) | |
Samuel M. Hulme | Bigelow Laboratory for Ocean Sciences | |
Amber York | University of California-Santa Cruz (UC Santa Cruz) | |
Amber York | University of California-Santa Cruz (UC Santa Cruz) | |
Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | |
Amber York | Woods Hole Oceanographic Institution (WHOI BCO-DMO) |
BCO-DMO Project Info
Project Title | Discovery, sampling, and quantification of flows from cool yet massive ridge-flank hydrothermal springs on Dorado Outcrop, eastern Pacific Ocean |
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Acronym | Dorado Outcrop |
URL | https://www.bco-dmo.org/project/627844 |
Created | November 30, 2015 |
Modified | December 1, 2015 |
Project Description
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.
Data Project Maintainers
Name | Affiliation | Role |
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Charles Geoffrey Wheat | University of Alaska Fairbanks (UAF-IMS) | Principal Investigator |
Andrew T. Fisher | University of California-Santa Cruz (UC Santa Cruz) | Principal Investigator |
Samuel M. Hulme | Moss Landing Marine Laboratories (MLML) | Principal Investigator |