Schmidt, Mark (2025): Porewater geochemistry of surface sediment of the German North Sea, recovered by Van Veen Grab during METEOR cruise MSM99/2 cruise (2021-03-26 - 2021-04-05) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.980256
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Published: 2025-04-01 • DOI registered: 2025-04-30
Abstract:
Data set includes geochemical composition of porewater extracted from sediment of the North Sea (German EEZ). Respective sediment was retrieved during RV Maria S. Merian cruise MSM99/2 (Schmidt et al., 2021). Sediments were recovered by using gravity corer, mini-corer, and van Veen grab.
Onboard measured parameter (Total alkalinity) and land-based laboratory analyses (Cl, Br, SO4, CH4, B, Mn, Ca, Fe, Na, Mg, Sr, Si, Ba, Li, K) are combined with porosity and water content data.
The data is mainly used to evaluate the relevance of porewater chemistry on pockmark formation north of Helgoland (Böttner et al., 2024).
Related to:
Böttner, Christoph; Hoffmann, J; Unverricht, Daniel; Schmidt, Mark; Spiegel, Timo; Geersen, Jacob; Müller, Thomas H; Karstens, Jens; Andresen, Katrine; Sander, Lasse; Schneider von Deimling, Jens; Schmidt, Christopher (2024): The Enigmatic Pockmarks of the Sandy Southeastern North Sea. Geochemistry, Geophysics, Geosystems, 25, DOI:10.1029/2024GC011837
Schmidt, Christopher; Böttner, Christoph; Schmidt, Mark; Müller, Thomas H; Wünsche, Anna; Willems, Tim; Lindner, Marie; Müller, Frieda; Hunkemöller, Annette; Spiegel, Timo (2021): Wave induced pockmark formation in the North Sea, Cruise No. MSM 99/2 (GPF 21-1_013), 26.03.2021 - 05.04.2021, Emden (Germany) - Emden (Germany). MARIA S. MERIAN-Berichte, Gutachterpanel Forschungsschiffe, 99/2, 49 pp, https://doi.org/10.48433/cr_msm99_2
Funding:
German Research Foundation (DFG), grant/award no. GPF 21-1_013: Wave induced pockmark formation in the North Sea
Coverage:
Median Latitude: 54.460303 * Median Longitude: 7.334081 * South-bound Latitude: 54.419700 * West-bound Longitude: 7.205550 * North-bound Latitude: 54.524800 * East-bound Longitude: 7.416220
Date/Time Start: 2021-03-27T07:46:30 * Date/Time End: 2021-03-28T13:40:48
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.035 m
Event(s):
MSM99/2_4-4 (VGRAB1) * Latitude Start: 54.450450 * Longitude Start: 7.388930 * Latitude End: 54.450450 * Longitude End: 7.388940 * Date/Time Start: 2021-03-27T07:46:30 * Date/Time End: 2021-03-27T07:49:56 * Elevation Start: -30.1 m * Elevation End: -30.0 m * Location: North Sea * Campaign: MSM99/2 (GPF 21-1_013) * Basis: Maria S. Merian * Method/Device: van Veen Grab (VGRAB)
MSM99/2_4-7 (VGRAB2) * Latitude Start: 54.449910 * Longitude Start: 7.389980 * Latitude End: 54.449910 * Longitude End: 7.389980 * Date/Time Start: 2021-03-27T08:43:17 * Date/Time End: 2021-03-27T08:46:48 * Elevation Start: -30.8 m * Elevation End: -30.7 m * Location: North Sea * Campaign: MSM99/2 (GPF 21-1_013) * Basis: Maria S. Merian * Method/Device: van Veen Grab (VGRAB)
MSM99/2_5-3 (VGRAB3) * Latitude Start: 54.451530 * Longitude Start: 7.384900 * Latitude End: 54.451530 * Longitude End: 7.384910 * Date/Time Start: 2021-03-27T09:28:52 * Date/Time End: 2021-03-27T09:32:35 * Elevation Start: -31.0 m * Elevation End: -30.8 m * Location: North Sea * Campaign: MSM99/2 (GPF 21-1_013) * Basis: Maria S. Merian * Method/Device: van Veen Grab (VGRAB)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Schmidt, Mark | |||
| 2 | Station label | Station | Schmidt, Mark | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Schmidt, Mark | Geocode | |
| 4 | Methane | CH4 | mmol/l | Schmidt, Mark | Gas chromatography | |
| 5 | Water content, wet mass | Water wm | % | Schmidt, Mark | Dehydration by freeze drying | |
| 6 | Porosity, volume | Poros vol | Schmidt, Mark | Calculated |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
69 data points
Data
| 1 Event | 2 Station | 3 Depth sed [m] | 4 CH4 [mmol/l] | 5 Water wm [%] | 6 Poros vol |
|---|---|---|---|---|---|
| MSM99/2_10-1 | MSM99-2/10-1VGRAB7 | 0.005 | 0.00074 | 21.45 | 0.40 |
| MSM99/2_10-1 | MSM99-2/10-1VGRAB7 | 0.035 | 0.00180 | 21.00 | 0.39 |
| MSM99/2_11-1 | MSM99-2/11-1VGRAB8 | 0.005 | 0.00031 | 21.81 | 0.41 |
| MSM99/2_11-1 | MSM99-2/11-1VGRAB8 | 0.035 | 0.00105 | 21.55 | 0.40 |
| MSM99/2_12-1 | MSM99-2/12-1VGRAB9 | 0.005 | 0.00092 | 20.64 | 0.39 |
| MSM99/2_12-1 | MSM99-2/12-1VGRAB9 | 0.035 | 0.00087 | 19.50 | 0.37 |
| MSM99/2_4-4 | MSM99-2/4-4VGRAB1 | 0.005 | 21.56 | 0.40 | |
| MSM99/2_4-4 | MSM99-2/4-4VGRAB1 | 0.015 | 0.00177 | ||
| MSM99/2_4-7 | MSM99-2/4-7VGRAB2 | 0.005 | 0.00089 | 18.54 | 0.36 |
| MSM99/2_4-7 | MSM99-2/4-7VGRAB2 | 0.035 | 0.00136 | 21.11 | 0.40 |
| MSM99/2_5-3 | MSM99-2/5-3VGRAB3 | 0.005 | 0.00079 | 20.95 | 0.39 |
| MSM99/2_5-3 | MSM99-2/5-3VGRAB3 | 0.035 | 0.00093 | 21.22 | 0.40 |
| MSM99/2_5-4 | MSM99-2/5-4VGRAB4 | 0.005 | 0.00120 | 17.26 | 0.34 |
| MSM99/2_5-4 | MSM99-2/5-4VGRAB4 | 0.035 | 0.00133 | 22.04 | 0.41 |
| MSM99/2_7-2 | MSM99-2/7-2VGRAB5 | 0.005 | 0.00083 | 21.22 | 0.40 |
| MSM99/2_7-2 | MSM99-2/7-2VGRAB5 | 0.035 | 0.00097 | 22.04 | 0.41 |
| MSM99/2_9-1 | MSM99-2/9-1VGRAB6 | 0.005 | 0.00111 | 21.83 | 0.41 |
| MSM99/2_9-1 | MSM99-2/9-1VGRAB6 | 0.035 | 0.00214 | 22.24 | 0.41 |