Isotope data (Δ¹⁴C, δ¹³C and δD) for dissolved methane at the Outer Eurasian Arctic Shelf
Julia Steinbach, Henry Holmstrand, Örjan Gustafsson
Isotope data for dissolved methane determined in samples collected from vertical and bottom-water horizontal casts in the outer Laptev Sea.
The data was collected during the SWERUS-C3 expedition to the Arctic Ocean with Swedish icebreaker Oden during summer 2014, and compiled to apportion the sources of methane being released from the ocean bottom and causing highly elevated methane concentrations in the Laptev Sea water column.
The dataset was prepared for the first study in this region to use the combination of radiocarbon, δ¹³C and δD to deduce the sources of methane escaping from the sea floor.
MarineArctic carbonMethaneRadiocarbonIsotopesArctic carbonArctic OceanEast Siberian Arctic SeaSWERUS-C3Icebreaker Oden
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Citation
References
Steinbach J, Holmstrand H, Shcherbakova K, Kosmach D, Brüchert V, Shakhova N, Salyuk A, Sapart CJ, Chernykh D, Noormets R, Semiletov I, Gustafsson Ö (2021) Source apportionment of methane escaping the subsea permafrost system in the Outer Eurasian Arctic Shelf. PNAS 118. [https://doi.org/ 10.1073/pnas.2019672118](https://doi.org/ 10.1073/pnas.2019672118)
Data description
The data is provided in one spreadsheet (xlsx) file with three tabs. File content:
Sample list
- Sample ID, sampling device, depth, lon-lat coordinates and time of sampling
- Salinity, temperature, oxygen concentration and carbon dioxide concentration of the seawater
- Concentration, δD and δ¹³C of dissolved methane in seawater
Triple isotope samples
- Concentration, δD, δ¹³C and Δ¹⁴C for dissolved methane in select seawater samples
- Regression analysis results for Keeling plots of δD, δ¹³C and Δ¹⁴C to obtain the methane isotope signature of the seafloor methane seeps
¹⁴C results
- ¹⁴C of dissolved methane and CO₂, and parameters that were used for these calculations
The same data is also provided in three comma-separated values (csv) files, stored with Western Europe (ISO-8859-15/EURO) character set.
Comments
Please, cite the article by Steinbach et al. (2021) when using this dataset.
Project
KAW SWERUS-C3 (#2011.0027), VR SWERUS, VR Rådsprofessor (#2017-01601), ERC-AdG (#695331), EU Nunataryuk (#773421), EU Comfort
Publisher
Bolin Centre Database
License
First name
Örjan
Last name or organisation
Gustafsson
Email address
Address
Stockholm University; Department of Environmental Science (ACES)
Postal code
SE-106 91
City
Stockholm
Country
Sweden
GCMD science keyword
Earth science > Oceans > Ocean chemistry > Carbon
GCMD location
Ocean > Arctic Ocean
Dataset language
English
Begin date
2014-07-15
End date
2014-08-08