Methodological study of coastal geological hazard assessment based on GIS |
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| Authors: | LIU Jun CHENG Jian-mei JIANG Fang-yuan |
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| Institution: | 1.Land Resources Bureau of Changzhou City, Changzhou 213022, China.;2.Changzhou Geoscience & Living Environment Institute, Changzhou 213022, China.;3.School of Environmental Studies, China University of Geosciences, Wuhan 430074, China.;4.Shenzhen Investigation & Research Institute Co., Ltd., Shenzhen 518000, China. |
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| Abstract: | The current researches on risk assessment of geological disasters mainly focus on unexpected disasters such as collapses, landslides and mud-rock flows etc. As the convergence zone of land and sea, coastal zone is the most active and complex area of interactions of lithosphere, hydrosphere, atmosphere, biosphere and anthroposphere. The ecological environment of coastal zone is very fragile, so further systematical research on coastal geological hazard assessment and prevention is in urgent need. The author begins with the definition and research contents and selects three typical coastal geological disasters, namely, the seawater intrusion, coastline change and sea-level rise as the objects of study. The systematic analysis and study on assessment system and methods are conducted, hazard assessment factors are selected, and a completely set of coastal disaster assessment system is established based on the technique of GIS. We took Bao’an District of Shenzhen City as an example and carried out a case study. |
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| Keywords: | Costal zone Geological hazard GIS Seawater intrusion Coastline change Sea-level rise |
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