Pape, Thomas; Geprägs, Patrizia; Hammerschmidt, Sebastian; Wintersteller, Paul; Wei, Jiangong; Fleischmann, Timo; Bohrmann, Gerhard; Kopf, Achim J (2014): (Table 1) Distributions of light hydrocarbons and CO2, C1/C2 ratios, and stable C isotope signatures of CH4 in hydrate-bound gas and dissolved gas [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.834461, In supplement to: Pape, T et al. (2014): Hydrocarbon seepage and its sources at mud volcanoes of the Kumano forearc basin, Nankai Trough subduction zone. Geochemistry, Geophysics, Geosystems, 15(6), 2180-2194, https://doi.org/10.1002/2013GC005057
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Project(s):
Coverage:
Median Latitude: 33.656869 * Median Longitude: 136.735800 * South-bound Latitude: 33.547060 * West-bound Longitude: 136.281330 * North-bound Latitude: 33.676550 * East-bound Longitude: 136.923480
Date/Time Start: 2012-06-21T04:06:00 * Date/Time End: 2012-07-14T03:44:00
Minimum Elevation: -2000.0 m * Maximum Elevation: -1800.0 m
Event(s):
GeoB16716-2 * Latitude: 33.547060 * Longitude: 136.281330 * Date/Time: 2012-06-21T04:06:00 * Elevation: -1850.0 m * Campaign: SO222 (MEMO) * Basis: Sonne * Method/Device: Gravity corer (GC) * Comment: MV #10 crest
Comment:
Light Hydrocarbons and CO2 (in mol%Sum[C1 to n-C4 + CO2]), Hydrate-Bound Gas (Hyd.), Dissolved Gas (Diss.) a.
a: Values of d13C-CH4 (diss.) are given for lowermost sample in profile.
No (column #9)=number of samples analyzed for molecular composition (mean value).
<0.04 = <=0.04 mol%.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Comment | Comment | Pape, Thomas | |||
| 3 | C1 hydrocarbons | C1 | % | Pape, Thomas | Gas chromatography | mol% |
| 4 | C2 hydrocarbons | C2 | % | Pape, Thomas | Gas chromatography | mol% |
| 5 | C3 hydrocarbons | C3 | % | Pape, Thomas | Gas chromatography | mol% |
| 6 | iso-C4 hydrocarbons | i-C4 | % | Pape, Thomas | Gas chromatography | |
| 7 | C4 hydrocarbons | C4 | % | Pape, Thomas | Gas chromatography | n. Ident. |
| 8 | Carbon dioxide | CO2 | % | Pape, Thomas | Gas chromatography | |
| 9 | Number | No | Pape, Thomas | |||
| 10 | C1/C2 hydrocarbon ratio | C1/C2 | Pape, Thomas | |||
| 11 | δ13C, methane | δ13C CH4 | ‰ PDB | Pape, Thomas | Hyd., per mil VPDB | |
| 12 | δ13C, methane | δ13C CH4 | ‰ PDB | Pape, Thomas | Diss. a, per mil VPDB | |
| 13 | Δδ13C, methane | Δδ13C CH4 | ‰ PDB | Pape, Thomas | CH4 Hyd.-Diss., per mil VPDB |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
129 data points
Data
| 1 Event | 2 Comment | 3 C1 [%] (mol%) | 4 C2 [%] (mol%) | 5 C3 [%] (mol%) | 6 i-C4 [%] | 7 C4 [%] (n. Ident.) | 8 CO2 [%] | 9 No | 10 C1/C2 | 11 δ13C CH4 [‰ PDB] (Hyd., per mil VPDB) | 12 δ13C CH4 [‰ PDB] (Diss. a, per mil VPDB) | 13 Δδ13C CH4 [‰ PDB] (CH4 Hyd.-Diss., per mil VPDB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GeoB16764-1 | MV #2 | 95.4837 | 0.4230 | <0.0400 | <0.0400 | <0.04 | 3.9944 | 1 | 226 | |||
| GeoB16771-1 | MV #2 | 95.3569 | 0.6120 | <0.0400 | <0.0400 | <0.04 | 3.9336 | 2 | 156 | -39.5 | -38.8 | -0.7 |
| GeoB16772-1 | MV #2 | 95.4521 | 0.5860 | <0.0400 | <0.0400 | <0.04 | 3.8649 | 2 | 163 | -40.5 | -37.2 | -3.3 |
| GeoB16788-1 | MV #2 | 95.5311 | 0.4318 | <0.0400 | <0.0400 | <0.04 | 3.9408 | 2 | 221 | -39.7 | ||
| GeoB16788-2 | MV #2 | 95.5640 | 0.4854 | <0.0400 | <0.0400 | <0.04 | 3.8534 | 2 | 197 | -39.9 | ||
| average | 95.4776 | 0.5076 | <0.0400 | <0.0400 | <0.04 | 3.9174 | 188 | -39.9 | ||||
| GeoB16722-2 | MV #4 | 92.7873 | 2.7252 | <0.0400 | <0.0400 | <0.04 | 4.3911 | 2 | 34 | -39.4 | -41.1 | 1.7 |
| GeoB16725-1 | MV #4 | 93.7949 | 1.7243 | <0.0400 | <0.0400 | <0.04 | 4.3817 | 2 | 54 | -38.9 | -37.3 | -1.6 |
| GeoB16736-1 | MV #4 | 94.0164 | 1.3663 | 0.0412 | <0.0400 | <0.04 | 4.5087 | 4 | 69 | -39.3 | ||
| average | 93.5329 | 1.9386 | <0.0400 | <0.0400 | <0.04 | 4.4275 | 48 | -39.2 | ||||
| GeoB16746-1 | MV #5 | 95.9588 | 0.1065 | <0.0400 | <0.0400 | <0.04 | 3.8371 | 6 | 901 | -37.6 | -36.7 | -0.9 |
| GeoB16716-2 | MV #10 | 94.7519 | 0.8170 | 0.4285 | 0.1107 | <0.04 | 3.8565 | 7 | 116 | -38.0 | -39.6 | 1.6 |