Dataset: Southern California Seeps Stable Isotopes
Deployment: WF05-21

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/877823

Principal Investigator:

Lisa A. Levin (University of California-San Diego Scripps, UCSD-SIO)

Co-Principal Investigator:

Shana Goffredi (Occidental College)

Victoria J. Orphan (California Institute of Technology, Caltech)

BCO-DMO Data Manager:

Taylor Heyl (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Collaborative Research: Redefining the footprint of deep ocean methane seepage for benthic ecosystems (Methanosphere)

Version:

Deployment Synonyms:

WF0521

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Description

Methods & Sampling

Dataset acquisition description

Carbon and nitrogen stable isotope data for invertebrates were collected by ROV from the R/V Western Flyer 0521 (May 2021) at the Del Mar Seep (35.9°N, -117.766667°E) and Santa Monica Seep (33.799438°N, -118.64672°E) and from the R/V Falkor 210726 in August 2021 at Lasuen Seep (33.388589°N, -118.007°E). There are also POC/PON data for one surface and one near bottom water sample collected by CTD.

Sampling was performed by ROV manipulator, collecting rocks, pushcores, and slurps. Tissue samples for isotope analysis were preserved frozen.

Data Processing Description

Dataset Processing Description

Data Processing:
δ13C and δ15N measurements were made on 0.2-4 mg dry-weight samples combusted using an elemental analyzer interfaced to a continuous flow isotope ratio mass spectrometer at the Stable Isotope Facility at the University of California, Davis (SIF-UCD).

BCO-DMO Processing:
- Converted dates to format YYYY-MM-DD
- Adjusted field/parameter names to comply with BCO-DMO naming conventions
- Missing data identifier "NA" replaced with "nd" (BCO-DMO's default missing data identifier)
- Added a conventional header with dataset name, PI names, version date

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-2048481	NSF Division of Ocean Sciences
OCE-2048666	NSF Division of Ocean Sciences
OCE-2048720	NSF Division of Ocean Sciences

Instruments

Elemental Analyzer

Supplied Name:

Supplied Description:

Elemental analyzer interfaced to a continuous flow isotope ratio mass.

Instrument Type

Generic Name: Elemental Analyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/

Generic Description:

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.

ROV Doc Ricketts

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: ROV Doc Ricketts

Acronym: Doc Ricketts

Generic Description:

The remotely operated vehicle (ROV) Doc Ricketts is operated by the Monterey Bay Aquarium Research Institute (MBARI). ROV Doc Ricketts is capable of diving to 4000 meters (about 2.5 miles). The R/V Western Flyer is the support vessel for Doc Ricketts and was designed with a center well whose floor can be opened to allow Doc Ricketts to be launched from within the ship into the water below. For a complete description, see: https://www.mbari.org/at-sea/vehicles/remotely-operated-vehicles/rov-doc-ricketts/

ROV SuBastian

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: ROV SuBastian

Generic Description:

ROV SuBastian is operated from the research vessel Falkor and the R/V Falkor(too). The ROV is outfitted with a suite of sensors and scientific equipment to support scientific data and sample collection, as well as interactive research, experimentation, and technology development. More information available at https://schmidtocean.org/technology/robotic-platforms/4500-m-remotely-operated-vehicle-rov/

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise	Number of the cruise	unitless	cruiseid
Date	Date of the collection in format YYYY-MM-DD	unitless	date
Dive_No	Number of the ROV dive	unitless	dive_id
Station	Name of the station	unitless	station
Depth	Depth of collection	meters (m)	depth
Sample_Type	Sample type (e.g. rock or pushcore)	unitless	sample_type
Sample_No	Number of the sample	unitless	sample
Ship_ID	Log number of each sample in the ship numbering system	unitless	ship
Habitat	Seepage activity of sample location	unitless	site_descrip
Taxon_ID	Taxonomic identification of the sample	unitless	taxon
d13C	d13C value of the sample	Per mil (‰)	d13C
d15N	d15N value of the sample	Per mil (‰)	d15N

Database

Contribute Data

Dataset: Southern California Seeps Stable Isotopes
Deployment: WF05-21

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Southern California Seeps Stable IsotopesDeployment: WF05-21

Dataset acquisition description

Dataset Processing Description

Dataset: Southern California Seeps Stable Isotopes
Deployment: WF05-21