Pape, Thomas; Bahr, André; Klapp, Stephan A; Abegg, Friedrich; Bohrmann, Gerhard (2011): (Table 3) Total methane volume (VCH4t) in the individual core, nominal methane in situ concentrations (nCCH4U3), and concentrations of hydrate-bound methane (CCH4hbU3) in Unit 3, as well as contents of gas hydrates in Units 2 and 3 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.763857, In supplement to: Pape, T et al. (2011): High-intensity gas seepage causes rafting of shallow gas hydrates in the southeastern Black Sea. Earth and Planetary Science Letters, 307, 35-46, https://doi.org/10.1016/j.epsl.2011.04.030
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Project(s):
Coverage:
Median Latitude: 41.957998 * Median Longitude: 41.290298 * South-bound Latitude: 41.956833 * West-bound Longitude: 41.287833 * North-bound Latitude: 41.959117 * East-bound Longitude: 41.292417
Date/Time Start: 2007-03-19T18:44:00 * Date/Time End: 2007-04-11T13:09:00
Minimum Elevation: -851.0 m * Maximum Elevation: -840.0 m
Event(s):
GeoB11901 (DAPC-1) * Latitude: 41.956833 * Longitude: 41.289067 * Date/Time: 2007-03-19T18:44:00 * Elevation: -851.0 m * Recovery: 2.6 m * Location: Batumi Seep * Campaign: M72/3a * Basis: Meteor (1986) * Method/Device: Dynamic autoclave piston corer (DAPC) * Comment: DAPC (I), USBL
GeoB11906 (DAPC-3) * Latitude: 41.957750 * Longitude: 41.287833 * Date/Time: 2007-03-22T07:58:00 * Elevation: -843.0 m * Recovery: 0.83 m * Location: Batumi Seep * Campaign: M72/3a * Basis: Meteor (1986) * Method/Device: Dynamic autoclave piston corer (DAPC) * Comment: DAPC (I), USBL
GeoB11918 (DAPC-8) * Latitude: 41.959117 * Longitude: 41.290450 * Date/Time: 2007-03-30T10:30:00 * Elevation: -840.0 m * Recovery: 2.33 m * Location: Batumi Seep * Campaign: M72/3a * Basis: Meteor (1986) * Method/Device: Dynamic autoclave piston corer (DAPC) * Comment: DAPC (II), USBL, first time DAPC-II used
Comment:
GH = gas hydrate; pv = pore volume, cv = core volume.
a Assuming a CH4 fraction of 97 vol.-% of the entire gas (Section 3.3.1).
b Inferred from pressure-volume relationships during core degassing according to Milkov et al. (2004)).
c Nominal CH4 in situ concentrations in Units 1 and 2 (nCCH4U1, nCCH4U2) based on gas volumes of DAPC 09 and 12 devoid of Unit 3 (see Table 2; Fig. 4).
d Concentration of hydrate-bound CH4 (CCH4hbUx) indicates the difference between nCCH4Ux and shpUx. Nominal concentrations of hydrate-bound CH4 in sediments belonging to Unit 2 (CCH4hbU2) were 310.5 mM, resulting in nominal hydrate fractions of fGHU2PV=5.2% of pore volume and fGHU2CV=4.0% of core volume, respectively.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Pape, Thomas | |||
| 3 | Volume | Vol | l | Pape, Thomas | see reference(s) | Volume CH4 a, VCH4t |
| 4 | Volume | Vol | l | Pape, Thomas | see reference(s) | Volume free CH4 b |
| 5 | Methane | CH4 | mmol/l | Pape, Thomas | see reference(s) | Conc. CH4 Unit 3 c, nCCH4U3 |
| 6 | Methane | CH4 | mmol/l | Pape, Thomas | see reference(s) | Conc. hydrate-bound CH4 Unit 3 d, nCCH4hbU3 |
| 7 | Methane, mass | CH4 | g | Pape, Thomas | see reference(s) | Mass hydrate-bound CH4 Unit 2, mCH4hbU2 |
| 8 | Methane, mass | CH4 | g | Pape, Thomas | see reference(s) | Mass hydrate-bound CH4 Unit 3, mCH4hbU3 |
| 9 | Volume | Vol | l | Pape, Thomas | see reference(s) | Volume GH Unit 2, VGHU2 |
| 10 | Volume | Vol | l | Pape, Thomas | see reference(s) | Volume GH Unit 3, VGHU3 |
| 11 | Volume | Vol | % | Pape, Thomas | see reference(s) | Fraction GH in pore volume of Unit 3, fGHU3PV |
| 12 | Volume | Vol | % | Pape, Thomas | see reference(s) | Fraction GH in core volume of Unit 3, fGHU3CV |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
65 data points