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Recent progress of deep seismic experiments and studies of crustal structure in northern South China Sea

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文献出处
Progress in Natural Science  2003年07期
基 金
the,Chinese,Academy,of,Sciences,(Grant,Nos.KZCX2-209,and,KZ952-B1-406),the,National,Natural,Science,Foundation,of,China,(Grant,Nos.4000161958,49804005,49504055,40276015,and,40204006),and,the,Chinese,Ministry,of,Science,and,Technology,(Grant,No.G200004670
论文摘要

The South China Sea (SCS) is one of the largest marginal seas in the western Pacific. Its northern part has the features of a passive continental margin. The studies of deep crustal structure in this area are very important for understanding the tectonic nature, evolution history, basin formation of the northern margin, and the origin of the SCS. In the past decades, the deep seismic experiments of crustal studies in the northern SCS have gone through three stages, namely the sonobuoy, two-ship Expanding Spread Profile (ESP), and Ocean Bottom Hydrophone/Seismometer (OBH/OBS). Along the continental slope, the sonobuoy experiments provided useful information about the velocity structure of the upper crust, while the ESP data recorded for the first time the seismic signals from deep crustal structure and Moho interface. And the OBH/OBS profiles revealed the crustal structure in much greater detail. This paper first gives a brief historical review of these deep seismic experiments and studies, then a summar

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