Pape, Thomas; Malnati, Janice; Bohrmann, Gerhard (2025): Methane concentrations in headspace gas prepared from shallow sediment core GeoB22015-1 collected with a multicorer off South Georgia, Southern Ocean, R/V METEOR cruise M134/1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.975111
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Published: 2025-02-12 • DOI registered: 2025-03-13
Abstract:
Shallow sediment cores were collected with a MultiCorer at locations on the shelf and slope of South Georgia during cruise M134/1 with R/V METEOR in 2017. In order to determine distributions of methane and characterize biogeochemical zonations in the sediment, 3 mL of the sediment was removed from the cores at defined depths using cut-off syringes and transferred to 20 mL glass vials filled with 5 ml NaOH solution to generate a 12 mL headspace gas volume. The headspace gas samples were analyzed for their methane concentrations by use of a gas chromatograph equipped with a capillary column and a flame ionization detector.
Related to:
Anderson, Madeline P B C; Reid, William D K; Bohrmann, Gerhard; Dohrmann, Ingrid; Hollyman, Philip R; Kasten, Sabine; Pape, Thomas; Römer, Miriam; Newton, Jason; Wigham, Ben; Linse, Katrin (in prep.): The abundance, diversity, and assemblage structure of the macrobenthos at the South Georgia shelf methane seeps. Frontiers in Marine Science
References:
Bohrmann, Gerhard; Aromokeye, David Adeyemi; Bihler, Viola; Dehning, Klaus; Dohrmann, Ingrid; Gentz, Torben; Grahs, M; Hogg, O; Hüttich, Daniel; Kasten, Sabine; Kirschenmann, E; Lange, Mirko; Leymann, Tom; Linse, Katrin; Loher, Markus; Malnati, Janice; Mau, Susan; Mickoleit, Anett; Nowald, Nicolas; Pape, Thomas; Reuter, Christian; Römer, Miriam; Sahling, Heiko; Stange, Nikolas; Torres, Marta E; Vittori, Vincent; von Dobeneck, Tilo; von Neuhoff, Holger; Weinrebe, Reimer Wilhelm; Wintersteller, Paul (2017): R/V METEOR Cruise Report M134, Emissions of Free Gas from Cross-Shelf Troughs of South Georgia: Distribution, Quantification, and Sources for Methane Ebullition Sites in Sub-Antarctic Waters, Port Stanley (Falkland Islands) - Punta Arenas (Chile), 16 January - 18 February 2017. Berichte aus dem MARUM und dem Fachbereich Geowissenschaften der Universität Bremen, 317, 220 pp, urn:nbn:de:gbv:46-00106081-12
Project(s):
Funding:
Coverage:
Latitude: -54.854480 * Longitude: -35.911120
Date/Time Start: 2017-01-25T12:14:00 * Date/Time End: 2017-01-25T12:14:00
Minimum DEPTH, sediment/rock: -0.01 m * Maximum DEPTH, sediment/rock: 0.32 m
Event(s):
M134/1_123-1 (GeoB22015-1) * Latitude: -54.854480 * Longitude: -35.911120 * Date/Time: 2017-01-25T12:14:00 * Elevation: -318.0 m * Location: South Atlantic Ocean * Campaign: M134/1 * Basis: Meteor (1986) * Method/Device: MultiCorer (MUC) * Comment: MUC-4
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Optional event label | Event 2 | Pape, Thomas | |||
| 2 | Campaign of event | Campaign | Pape, Thomas | |||
| 3 | Method/Device of event | Method/Device | Pape, Thomas | |||
| 4 | Comment | Comment | Pape, Thomas | |||
| 5 | Site | Site | Pape, Thomas | |||
| 6 | Sample type | Samp type | Pape, Thomas | |||
| 7 | DEPTH, sediment/rock | Depth sed | m | Pape, Thomas | Geocode | |
| 8 | Methane | CH4 | µmol/l | Pape, Thomas | Gas chromatograph; coupled with a capillary column and a flame ionization detector |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
108 data points