Song Haibin; Geng Jianhua; Wang Howking; Zhang Wensheng; Fang Yinxia; Hao Tianyao; Jiang Weiwei (2001): A preliminary study of gas hydrates in the Dongsha region, northern South China Sea. Science Press, Beijing, China, Diqiu Wulixue Bao = Acta Geophysica Sinica, 44 (5), 687-695, georefid:2009-038653

Abstract:
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.
Coverage:
West: 116.3356 East: 117.2508 North: 20.0311 South: 18.5010
Relations:
Expedition: 184
Site: 184-1144
Site: 184-1148
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=2009-038653 (c.f. for more detailed metadata)
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