Characteristics of Hazardous Geological Factors on Shenhu Continental Slope in the Northern South China Sea
Ma Yun
Li Sanzhong
Xia Zhen
Zhang Bingkun
Wang Xiaofei
Cheng Shixiu
Abstract：Since Shenhu continental slope in the northern South China Sea is rich in oil and gas resources as well as natural gas hydrate,and its seabed stability is important for oil and gas exploitation and engineering projects.But special study on seabed stability here is far from being enough now.Based on interpretation of 2D seismic data,shallow profiles and multi-beam echo sounder data,this paper focuses on the whole geological environment of this area and identifies 20 different kinds of hazardous geological factors.According to the dynamic source,five hazard types are concluded as follows:tectonic stress-related, gravity-related,hydrodynamics-related,gas effusion-related and soil-related hazards.Each type includes multi-hazardous fac-tors.According to the plan-view distribution of the hazardous geological factors,this area can be divided into the following six hazard regions:intensive areas of buried delta,submarine landslides,volcanism,weak layers,shallow fracture zone and shal-low bedrock.Major hazardous factors and their seismic reflection characteristics are presented to provide scientific reference for development of future engineering projects in the study area.
Keywords：the South China SeaShenhu continental slopehazardsclassificationreflection characteristics
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 1364-1372 )