RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2010, Vol. 19 >> Issue (01): 107-.

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DISTRIBUTION CHARACTERISTICS OF SECONDARY GEOLOGICAL DISASTERS IN THE SEVERELY AFFLICTED AREA OF WENCHAN EARTHQUAKE BASED ON REMOTE SENSING SURVEY

PENG Ying1| LIU Wenting1| ZHANG Zhi1| MAO Wei1| PENG Dan2   

  1. (1.Faculty of Earth Sciences| China University of Geosciences| Wuhan| 430074 China; 
    2.The Ecology and Environment Department| Nanchang Institute of Technology| Nanchang 330099| China)
  • Online:2010-01-20

Abstract:

The earthquake zone of Wenchuan Ms8.0 earthquake is located in Longmenshan areas in Sichuan Province.The areas have complex geological conditions,frequent neotectonic movements.This earthquake is the most serious destructive earthquake in mainland China since the P.R.China founded and it caused a series of secondary geological disasters such as the collapse,landslide,mudrock flows.Analysing the disaster distribution and activity characteristic of secondary geology can provide a scientific basis for the disaster areas to take appropriate remediation programs,prevention and control measures,and also provide the reference for the site selection of reconstruction and the disaster prevention program for other areas.The projects interpreted the RS information by using optical and radar images and other geological and geographic files with the support of related RS and GIS software,and obtained monitoring data of secondary geological disasters in the 10 most serious disaster counties and cities in Sichuan Province.On the basis of the interpretation data,this paper explored the space of its location,distribution and related geological and geographical factors.The results show that the secondary geological disasters are closely linked with the stratigraphic lithology,tectonic fracture zone,slope,etc.

Key words: Wenchuan/ remote sensing/ distribution of secondary disasters

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