In-situ borehole temperature measurements confirm dynamics of the gas hydrate stability zone at the upper Danube deep sea fan, Black Sea

被引：0

作者：

Riedel, Michael ^{[1
]}

Freudenthal, Tim ^{[2
]}

Bialas, Jörg ^{[1
]}

Papenberg, Cord ^{[1
]}

Haeckel, Matthias ^{[1
]}

Bergenthal, Markus ^{[2
]}

Pape, Thomas ^{[2
,3
]}

Bohrmann, Gerhard ^{[2
,3
]}

机构：

[1] GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1 – 3, Kiel,24148, Germany

[2] MARUM - Center for Marine Environmental Sciences, University Bremen, Leobener Str. 8, Bremen,28359, Germany

[3] Faculty of Geosciences, University of Bremen, Klagenfurter Str. 2 – 4, Bremen,28334, Germany

来源：

Earth and Planetary Science Letters | 2021年 / 563卷

关键词：

Seismology - Gases - Reflection - Climate change - Infill drilling - Temperature measurement - Hydration;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Coring, geophysical logging, and in-situ temperature measurements were performed with the MARUM-MeBo200 seafloor rig to characterize gas hydrate occurrences in sediments of the Danube deep sea fan, off Romania, Black Sea. The new drilling data showed no evidence for significant gas hydrate saturations within the sediments but the presence of free gas at the depth of the bottom-simulating reflector (BSR). In-situ temperature and core-derived geochemical data suggest that the current base of the gas hydrate stability zone (BGHSZ) is ∼20 m shallower than the BSR. Investigation of the seismic data around the drill sites shows several locations where free gas previously trapped at a former BGHSZ migrated upwards forming a new reflection above the BSR. This shows that the gas hydrate system in the Danube deep sea fan is still responding to climate changes initiated at the end of the last glacial maximum. © 2021 Elsevier B.V.

引用

共 6 条

[1] In-situ borehole temperature measurements confirm dynamics of the gas hydrate stability zone at the upper Danube deep sea fan, Black Sea
Riedel, Michael
Freudenthal, Tim
Bialas, Jorg
Papenberg, Cord
Haeckel, Matthias
Bergenthal, Markus
Pape, Thomas
Bohrmann, Gerhard
EARTH AND PLANETARY SCIENCE LETTERS, 2021, 563
[2] Potential impacts of gas hydrate exploitation on slope stability in the Danube deep-sea fan, Black Sea
Zander, Timo
Choi, Jung Chan
Vanneste, Maarten
Berndt, Christian
Dannowski, Anke
Carlton, Brian
Bialas, Joerg
MARINE AND PETROLEUM GEOLOGY, 2018, 92 : 1056 - 1068
[3] Heat Flow Measurements at the Danube Deep-Sea Fan, Western Black Sea
Riedel, Michael
Bialas, Joerg
Villinger, Heinrich
Pape, Thomas
Haeckel, Matthias
Bohrmann, Gerhard
GEOSCIENCES, 2021, 11 (06)
[4] Investigating a gas hydrate system in apparent disequilibrium in the Danube Fan, Black Sea
Hillman, Jess I. T.
Burwicz, Ewa
Zander, Timo
Bialas, Joerg
Klaucke, Ingo
Feldman, Howard
Drexler, Tina
Awwiller, David
EARTH AND PLANETARY SCIENCE LETTERS, 2018, 502 : 1 - 11
[5] Analysis of marine controlled source electromagnetic data for the assessment of gas hydrates in the Danube deep-sea fan, Black Sea
Schwalenberg, Katrin
Gehrmann, Romina A. S.
Bialas, Jorg
Rippe, Dennis
MARINE AND PETROLEUM GEOLOGY, 2020, 122
[6] CORRELATION OF UPPER PLEISTOCENE-HOLOCENE SEDIMENTS FROM THE DEEP-WATER DANUBE FAN AND THE SHELF OF THE BLACK SEA
Genov, Ivan
COMPTES RENDUS DE L ACADEMIE BULGARE DES SCIENCES, 2018, 71 (12): : 1665 - 1671

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