Song Haibin et al. (2001): A preliminary study of gas hydrates in the Dongsha region, northern South China Sea

Leg/Site/Hole:
ODP 184
ODP 184 1144
ODP 184 1148
Identifier:
2009-038653
georefid
Creator:
Song Haibin
Chinese Academy of Sciences, Institute of Geology and Geophysics, Beijing, China
author
Geng Jianhua
Tongji University, China
author
Wang Howking
Hamburg University, Federal Republic of Germany
author
Zhang Wensheng
China Bureau of Oceanography, China
author
Fang Yinxia
author
Hao Tianyao
author
Jiang Weiwei
author
Identification:
A preliminary study of gas hydrates in the Dongsha region, northern South China Sea
2001
Diqiu Wulixue Bao = Acta Geophysica Sinica
Science Press, Beijing, China
44
5
687-695
Using seismic, sonic logging and geothermal data, the distribution characteristics of gas hydrates in the Dongsha region in the north of the South China Sea were studied. Bottom simulating reflectors (BSR) and amplitude blanking zones were discovered in the seismic profiles. High-velocity intervals and velocity reversals were distinguished in the sonic logging curve. The BSR depth is compared with the thickness of the gas hydrate stability zone based on thermal gradient data. The depth of the BSR is in agreement with that obtained at ODP Sites 1144 and 1148, which are 654 and 475 meters below the sea floor, respectively. The top of the amplitude blanking zone may be related to gas hydrate-bearing strata in the region near ODP Site 1144 which is about 450 meters below the sea floor.
Chinese
Serial
Coverage:Geographic coordinates:
North:20.0311
West:116.3356East: 117.2508
South:18.5010
Economic geology, geology of energy sources; Applied geophysics; acoustical logging; bottom-simulating reflectors; Dongsha Rise; gas hydrates; geophysical methods; geophysical profiles; geophysical surveys; Leg 184; natural gas; North Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 1144; ODP Site 1148; offshore; Pacific Ocean; petroleum; petroleum exploration; seismic methods; seismic profiles; South China Sea; surveys; well-logging; West Pacific;
.