Download URLhttps://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

Acquisition Description

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.

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
  • Date and Time values used to generate ISO DateTime format
  • added approximate latitude and longitude in data for the sampling site


prototype soloDO logger [Temperature Logger]
Instance Description (prototype soloDO logger)

Prototype of the soloDO logger (RBR Ltd., Canada) also measured temperature.

Records temperature data over a period of time.

prototype soloDO [Dissolved Oxygen Sensor]
Instance Description (prototype soloDO)

Prototype of the soloDO logger (RBR Ltd., Canada). 

An electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analyzed


deployment_name [deploy]

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.

deployment number; often associated with sediment trap deployments

ISO_DateTime_UTC [ISO_DateTime_UTC]
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)
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)

Format: YYYY-mm-ddTHH:MM:SS[.xx]Z (UTC time)
temp [temperature]


water temperature at measurement depth
DO [O2_umol_L]
Dissolved Oxygen

Oxygen; dissolved; reported in units of micromoles/liter

lat_approx [latitude]

Approximate latitude of sampling area (Dorado Outcrop)

latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes

lon_approx [longitude]

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 [date]

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 [time]

Time (UTC) in format HHMM

Time GMT defined as HHMM; time of day; generally reported in GMT as HHMM (hours and minutes) but may also be HH.H (decimal hours) or HHMMSS (hours; minutes and seconds); in EqPac time is reported as Hawaii local time
site [site]

Site of instrument deployment; KW indicates the deployment was between markers K and W.

Sampling site identification.

Dataset Maintainers

Charles Geoffrey WheatUniversity of Alaska Fairbanks (UAF)
James McManusUniversity of Alaska Fairbanks (UAF)
Beth N. OrcuttUniversity of Akron (UAkron)
Andrew T. FisherUniversity of Akron (UAkron)
Samuel M. HulmeBigelow Laboratory for Ocean Sciences
Amber YorkUniversity of California-Santa Cruz (UC Santa Cruz)
Amber YorkUniversity of California-Santa Cruz (UC Santa Cruz)
Samuel M. HulmeMoss Landing Marine Laboratories (MLML)
Samuel M. HulmeMoss Landing Marine Laboratories (MLML)
Amber YorkWoods 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
Acronym Dorado Outcrop
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
Charles Geoffrey WheatUniversity of Alaska Fairbanks (UAF-IMS)Principal Investigator
Andrew T. FisherUniversity of California-Santa Cruz (UC Santa Cruz)Principal Investigator
Samuel M. HulmeMoss Landing Marine Laboratories (MLML)Principal Investigator