- 责任者：Yan Pin (Key Laboratory of Marginal Sea Geology ; South China Sea Institute of Oceanology ; CAS ; Guangzhou 510301 ; China) ; Wang Yanlin
- 刊名：Journal of Tropical Oceanography
- 出版年：2011
- 卷期：30(2)
- 关键词：海洋物探 ; marine geophysical exploration ; 地震勘探 ; seismic exploration ; 海洋地质调查 ; marine geological surveys ; 南海 ; South China Sea
- 页码：p.115-122
- 图表：7 illus., 34 refs.
- 分类号：0200
- issnNo：ISSN1009-5470
- isbnNo：CN44-1500/P
A new sub-bottom profiler with ability for deep water detection was used along survey lines from the outer shelf of Pearl River Mouth to the mid-slope of Baiyun Sag-Southwest Dongsha Island Waters. From the new high resolution data, it is found that the shallow sediments feature good continuity on the smooth upper slope of the Baiyun Sag, which implies homogenous bedrocks and weak current dynamics. Differently, over the mid-slope of Baiyun Sag-Southwest Dongsha Island Waters, there are remarkable phenomena, such as submarine slide-slump, local along-margin current erosive incision, rugged seafloor topography, and contrasted lateral variation of echoed reflection amplitudes, among others, which implies inhomogenous bedrocks and strong along-slope local current dynamics over the mid-slope.