Journal of Tropical Oceanography ›› 2012, Vol. 31 ›› Issue (3): 10-20.doi: 10.11978/j.issn.1009-5470.2012.03.002cstr: 32234.14.j.issn.1009-5470.2012.03.002

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On relationship between physical process and geological process in South China Sea Deep

SONG Hai-bin   

  1. Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
  • Received:2011-02-08 Revised:2012-03-12 Online:2012-09-11 Published:2012-09-11

Abstract: Special sedimentary phenomena such as sediment waves in the northeastern South China Sea (SCS) are closely related with physical processes in deep sea. Marine geological studies infer that sediment waves are caused by upward flow, contour current and turbidite current, while westward propagation of nonlinear internal waves and westward movement of meso-scale eddies are main features observed by satellite in the region. The evolutions of eddies and internal tides/internal waves are controlled by seafloor relief, and key features are submarine ridges (Hengchun Ridge and Luzon submarine volcanic arc) and continental shelf edge, which are mainly controlled by tectonic processes. The setup and evolution of modern physical process in SCS Deep are related to the formation and development of deep sea basin, northern rifted margin and eastern subduction margin of the SCS. Comprehensive studies of interactions among tectonic, sedimentary and physical processes will ensure a better understanding of evolution of SCS Deep. Recently, seismic oceanography has developed fast, though still in its preliminary stage. New discoveries may change our traditional knowledge about the deep ocean, grasp the nature of interactions between fluid Earth and solid Earth, and make major contributions to Earth system sciences.

Key words: South China Sea, physical process, tectonic process, sedimentary process, seismic oceanography

CLC Number: 

  • P738