Advances in Earth Science ›› 2021, Vol. 36 ›› Issue (7): 763-772. doi: 10.11867/j.issn.1001-8166.2021.070

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Review and Prospect of the Geomorphology of Sediment Creep in Sea Areas

Xiaochuan WU 1, 2( ),Liming OUYANG 1, 2,Xiaozhong GUO 1, 2,Yanling HUANG 1, 2,Zhenhua Huang 1, 2,Wei Li 3   

  1. 1.National Joint Local Engineering Research Center for Shale Gas Exploration and Development,Chongqing Institute of Geology and Mineral Resources,Chongqing 401120,China
    2.Key Laboratory of Shale Gas Exploration,Ministry of Natural Resources,Chongqing Institute of Geology and Mineral Resources,Chongqing 401120,China
    3.Key Laboratory of Marginal Sea Geology,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China
  • Received:2021-01-27 Revised:2021-05-29 Online:2021-07-10 Published:2021-08-20
  • About author:WU Xiaochuan (1991-), male, Chongqing City, Engineer. Research areas include seismogeology. E-mail:
  • Supported by:
    the Open Fund Project of Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences "Geometric and instability analysis of submarine creep folds around Dongsha Islands"(OMG2019-08);The National Natural Science Foundation of China "Formation mechanism and instability analysis of a submarine creep zone in the Pearl River Mouth Basin, northern South China Sea"(41876054)

Xiaochuan WU,Liming OUYANG,Xiaozhong GUO,Yanling HUANG,Zhenhua Huang,Wei Li. Review and Prospect of the Geomorphology of Sediment Creep in Sea Areas[J]. Advances in Earth Science, 2021, 36(7): 763-772.

Sediment creep as the precursor and indicator of the destruction of the submarine stratum, which can evolve into a large-scale submarine landslide, poses a huge threat to marine engineering construction and human life safety. Sediment creep morphology is mainly found to develop in the northern hemisphere through literature sorting, which is manifested by seafloor undulations composed of troughs and ridges. The main identification marks of sediment creep morphology are irregular changes in the morphology of troughs and ridges and their strikes extend along the water depth line and shear planes offset the troughs and ridges. Seismic activity, structural uplift, high deposition rate and formation pressure, gas-bearing formation and hydrate decomposition, etc., can all lead to the occurrence of sediment creep. However, many seafloor undulations suspected of sediment creep have been discovered in the process of previous research. The majority current research focuses on how to prove or falsify if these seafloor undulations are sediment creep. The slip deformation rate and the bottom interface of creep and its relationship with the underlying structure, the study of the formation process and evolution trend of sediment creep, etc., help to further determine the sediment creep, but its disaster evaluation work is rarely involved. Therefore, subsequent studies on sediment creep should strengthen the delineation and characterization of the bottom interface of sediment creep, and pay attention to the numerical and physical simulation studies of the formation process and evolution trend of sediment creep, which could contribute to the deep understanding of sediment creep and provide important information for evaluation of its disaster level.

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