Pape, Thomas; Malnati, Janice; Bohrmann, Gerhard (2025): Methane concentrations in headspace gas prepared from shallow sediment core GeoB22047-3 collected with a push corer off South Georgia, Southern Ocean, R/V METEOR cruise M134/1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.975128
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Published: 2025-02-17 • DOI registered: 2025-03-18
Abstract:
Shallow sediment cores were collected with Push Cores deployed with the ROV MARUM-SQUID 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:
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: -54.265383 * Longitude: -36.437867
Minimum DEPTH, sediment/rock: -0.01 m * Maximum DEPTH, sediment/rock: 0.18 m
Event(s):
M134/1_156-1b (GeoB22047-3) * Latitude: -54.265383 * Longitude: -36.437867 * Elevation: -256.0 m * Campaign: M134/1 * Basis: Meteor (1986) * Method/Device: Push corer (PUC) * Comment: ROV-27, PC 103
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Optional event label | Event 2 | ||||
| 2 | Campaign of event | Campaign | ||||
| 3 | Method/Device of event | Method/Device | ||||
| 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:
80 data points
Data
| 1 Event 2 | 2 Campaign | 3 Method/Device | 4 Comment | 5 Site | 6 Samp type | 7 Depth sed [m] | 8 CH4 [µmol/l] |
|---|---|---|---|---|---|---|---|
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | -0.01 | 46.6 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.00 | 126.4 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.01 | 225.5 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.02 | 257.8 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.03 | 276.0 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.04 | 478.9 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.05 | 690.7 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.06 | 615.6 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.07 | 774.6 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.08 | 461.7 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.09 | 807.2 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.10 | 729.5 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.11 | 639.9 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.12 | 634.0 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.13 | 675.8 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.14 | 694.2 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.15 | 732.0 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.16 | 1002.5 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.17 | 992.4 |
| GeoB22047-3 | M134/1 | Push corer | ROV-27, PC 103 | Cumberland Bay | headspace gas | 0.18 | 1113.8 |