Dataset: Initial Methane Concentration Alteration Data

Name: Initial Methane Concentration Alteration Experiment Data of the Deep Santa Barbara Basin Water Column from October 2019 (BASIN project)
Published: 2022-04-05
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.872652.1

Spatial Extent: N:34 E:-120 S:34 W:-120

Temporal Extent: 2019-10-21

Project:

Collaborative Research: Chemical and microbiological studies of water-soluble alkanes in the ocean (CASA)

Collaborative Research: Do benthic feedbacks couple sulfur, nitrogen and carbon biogeochemistry during transient deoxygenation? (BASIN)

Principal Investigator:

David L. Valentine (University of California-Santa Barbara, UCSB)

Co-Principal Investigator:

Tina Treude (University of California-Los Angeles, UCLA)

Scientist:

Franklin S. Kinnaman (University of California-Santa Barbara, UCSB)

Student:

Kelsey M. Gosselin (University of California-Santa Barbara, UCSB)

Na Liu (University of California-Santa Barbara, UCSB)

Qianhui Qin (University of California-Santa Barbara, UCSB)

Contact:

Qianhui Qin (University of California-Santa Barbara, UCSB)

BCO-DMO Data Manager:

Sawyer Newman (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2022-04-05

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Initial Methane Concentration Alteration Experiment Data of the Deep Santa Barbara Basin Water Column from October 2019 (BASIN project)

Abstract:

A methane concentration alteration experiment was performed to test the influence of methane concentration on methane oxidation rate. Together with the oxygen concentration alteration experiment, the purpose of this experiment was to test the assumption that methane oxidation in the Santa Barbara Basin deep water column follows first order kinetics.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2022-04-05	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.872652.1	2022-04-20

Methods & Sampling

Methodology:

Sampling and analytical procedures:

Methane concentrations were measured by headspace equilibration method, modified from Kinnaman et al., 2007.

Fractional methane turnover rates were analyzed based on the 3H-labeled methane incubation protocol by Bussmann et al., 2015.

Methane oxidation rates were calculated assuming adherence to the first-order rate law, by multiplying fractional methane turnover rate and ambient methane concentration (Valentine et al., 2001). 

Samples were collected from R/V Connell.

Data Files

File
qianhui_qin_-_methane_alteration_exp.csv (Comma Separated Values (.csv), 1.01 KB) MD5:17fa853b6bb4564f5d53c07de9eaf939 Primary data file for dataset ID 872652

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1830033
NSF Division of Ocean Sciences	OCE-1829981
NSF Division of Ocean Sciences	OCE-1756242
NSF Division of Ocean Sciences	OCE-1756667
NSF Division of Ocean Sciences	OCE-1756947

Deployments

None available yet

Instruments

CTD Sea-Bird SBE SEACAT 19plus

Supplied Name: Seabird SBE 19plusV2 Seacat Profiler System

Supplied Description:

Seawater sampling was performed using a rosette equipped with 6 4-liter Niskin bottles, the in-situ temperatures of the water samples were recorded by the conductivity–temperature–depth recorder (CTD), a Seabird SBE 19plusV2 Seacat Profiler system attached to the rosette. 

Instrument Type

Generic Name: CTD Sea-Bird SBE SEACAT 19plus

Acronym: Sea-Bird SEACAT 19 Plus

Generic Description:

Self contained self powered CTD profiler. Measures conductivity, temperature and pressure in both profiling (samples at 4 scans/sec) and moored (sample rates of once every 5 seconds to once every 9 hours) mode. Available in plastic or titanium housing with depth ranges of 600m and 7000m respectively. Minature submersible pump provides water to conductivity cell.

Niskin bottle

Supplied Name: 6 4-liter Niskin bottles

Supplied Description:

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Depth_m	sampling depths of sea water samples	m	depth
Initial_Methane_concentration_nM	initial methane concentration in sea water samples after alteration	nM	CH4
Methane_Oxidation_Rate_nM_per_d	methane oxidation rates of sea water samples	nM/d	CH4

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Database

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Dataset: Initial Methane Concentration Alteration Data