©2020 Biological and Chemical Oceanography Data Management Office.Time series of water column parameters (oxygen, nitrate, methane concentrations and methane oxidation rates) are sampled and measured to show the changes related to methane biogeochemistry during a deoxygenation and reoxygenation event in the deep Santa Barbara water column (440-583m).
Methodology:
Sampling and analytical procedures:
Densities were calculated from CTD-measured parameters (Seabird SBE 19plusV2 Seacat Profiler system).
Methane concentrations were measured by headspace equilibration method, modified from Kinnaman et al., 2007.
Oxygen concentrations were measured by ODF Winkler titration method.
Nitrate concentrations were measured by flow injection analysis (FIA) using the QuikChem 8500 Series 2 (Lachat Instruments, Zellweger Analytics Inc.)
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 and R/V Atlantis.
Qin, Q., Valentine, D. L., Treude, T., Kinnaman, F. S., Gosselin, K. M., Liu, N. (2022) Time series of oxygen, nitrate, methane concentrations and methane oxidation rates of the Santa Barbara Basin deep water column from 2019-2020 (BASIN project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-04-05 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.872703.1 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
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