Dataset: Axial Seamount hydrothermal sampling sites

Name: Description of Axial Seamount hydrothermal sampling sites from 5 cruises to the Axial Seamount, Juan de Fuca Ridge from 2012 to 2015 (NeMO2015 project)
Published: 2016-11-23
Keywords: oceans

Cite This Dataset

Spatial Extent: N:46.0747 E:-129.9795 S:45.9228 W:-130.0137

Project:

Event response to an eruption at Axial Seamount (NeMO2015)

Program:

Ocean Observatories Initiative (OOI)

Principal Investigator:

James Holden (University of Massachusetts Amherst)

Co-Principal Investigator:

David A. Butterfield (National Oceanic and Atmospheric Administration, NOAA-PMEL)

William Chadwick (Oregon State University, OSU-HMSC)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version Date:

2016-11-23

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Description of Axial Seamount hydrothermal sampling sites from 5 cruises to the Axial Seamount, Juan de Fuca Ridge from 2012 to 2015 (NeMO2015 project)

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Description

This dataset includes descriptions of the fluid sample temperatures and the sample sites.

Relevant Reference: Topcuoglu, BD, Stewart LC, Morrison HG, Butterfield DA, Huber JA and Holden JF (2016) Hydrogen Limitation and Syntrophic Growth among Natural Assemblages of Thermophilic Methanogens at Deep-sea Hydrothermal Vents. Front. Microbiol. 7:1240. doi: 10.3389/fmicb.2016.01240

Related Datasets:
Thermophile abundance - MPN
Thermophile growth

Methods & Sampling

In August 2012, September and October 2013, August 2014, and August 2015, 7-40°C diffuse hydrothermal fluids were collected from 10 vent sites at 1515-1716 m depths from Axial Seamount on the Juan de Fuca Ridge. The fluid samples were drawn into 650 ml Tedlar plastic bags with polyethylene valves within rigid housings using the NOAA Hydrothermal Fluid and Particle Sampler. The sampler pumped vent fluid through a titanium nozzle and recorded the temperature of the fluid within the intake nozzle once every second during pumping. Samples were collected using the research submarines ROV Jason II and ROV ROPOS. All operations at sea occurred on the research vessels Marcus G. Langseth, Thomas G. Thompson, Falkor, and Ronald H. Brown.

Data Processing Description

BCO-DMO Processing notes:
- added conventional header with dataset name, PI name, version date, reference information
- modified parameter names to conform with BCO-DMO naming conventions
- split information into multiple columns
- added latitudes and longitudes for mapping purposes

Data Files

File
thermophile_sites.csv (Comma Separated Values (.csv), 1.75 KB) MD5:131b4b385cb90f3a6894b7405769c3af Primary data file for dataset ID 664201

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1547004

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
FK010		2013-09-22	R/V Falkor	Julie Huber (Chief Scientist)	data info
MGL1216	NeMO 2012	2012-08-16	R/V Marcus G. Langseth	David A. Butterfield (Chief Scientist) Dr Maurice Tivey (Co-Chief Scientist)	data info
RB1403	NeMO 2014	2014-08-07	NOAA Ship Ronald H. Brown	David A. Butterfield (Chief Scientist) Dr Michael J. McPhaden (Co-Chief Scientist)	data info
TN300	NeMO 2013	2013-09-03	R/V Thomas G. Thompson	William Chadwick (Chief Scientist)	data info
TN327	NeMO 2015	2015-08-14	R/V Thomas G. Thompson	William Chadwick (Chief Scientist)	data info

Instruments

Discrete water sampler

Supplied Name: NOAA Hydrothermal Fluid and Particle Sampler

Supplied Description:

Pumps vent fluid through a titanium nozzle and records the temperature of the fluid within the intake nozzle once every second during pumping. http://www.pmel.noaa.gov/edd/hydrothermal-fluid-and-particle-sampler

Instrument Type

Generic Name: Discrete water sampler

Generic Description:

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.

Remotely Operated Vehicle

Supplied Name: ROV ROPOS

Supplied Description:

Used to collect hydrothermal vent samples. For further information, see http://ropos.com/

Instrument Type

Generic Name: Remotely Operated Vehicle

Acronym: ROV

Generic Description:

Remotely operated underwater vehicles (ROVs) are unoccupied, highly maneuverable underwater robots operated by a person aboard a surface vessel. They are linked to the ship by a group of cables that carry electrical signals back and forth between the operator and the vehicle. Most are equipped with at least a video camera and lights. Additional equipment is commonly added to expand the vehicle’s capabilities. These may include a still camera, a manipulator or cutting arm, water samplers, and instruments that measure water clarity, light penetration, and temperature.

ROV Jason

Supplied Description:

Used to collect hydrothermal fluid samples.

Instrument Type

Generic Name: ROV Jason

Generic Description:

The Remotely Operated Vehicle (ROV) Jason is operated by the Deep Submergence Laboratory (DSL) at Woods Hole Oceanographic Institution (WHOI). WHOI engineers and scientists designed and built the ROV Jason to give scientists access to the seafloor that didn't require them leaving the deck of the ship. Jason is a two-body ROV system. A 10-kilometer (6-mile) fiber-optic cable delivers electrical power and commands from the ship through Medea and down to Jason, which then returns data and live video imagery. Medea serves as a shock absorber, buffering Jason from the movements of the ship, while providing lighting and a bird’s eye view of the ROV during seafloor operations. During each dive (deployment of the ROV), Jason pilots and scientists work from a control room on the ship to monitor Jason’s instruments and video while maneuvering the vehicle and optionally performing a variety of sampling activities. Jason is equipped with sonar imagers, water samplers, video and still cameras, and lighting gear. Jason’s manipulator arms collect samples of rock, sediment, or marine life and place them in the vehicle’s basket or on "elevator" platforms that float heavier loads to the surface. More information is available from the operator site at URL.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
site	sampling location	unitless	site
lat	approximate latitude; north is positive	decimal degrees	lat
lon	approximate longitude; east is positive	decimal degrees	lon
depth	sampling depth	meters	depth
temp_2012	temperature at site during 2012 sampling	degrees Celsius	temp
temp_2013	temperature at site during 2013 sampling	degrees Celsius	temp
temp_2014	temperature at site during 2014 sampling	degrees Celsius	temp
temp_2015	temperature at site during 2015 sampling	degrees Celsius	temp
site_descrip	description of sampling site	unitless	site_descrip

Status message

Database

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Dataset: Axial Seamount hydrothermal sampling sites