Paper Info
Title
Research on the distribution characteristics of secondary geological disasters induced by 5.12 earthquake in Wenchuan county based on RS and GIS
Abstract
Field observation, remote sensing combined with GIS technique were adopted to analysis the spatial distribution characteristics of secondary geological disasters induced by Wenchuan earthquake. The study results show that: (1) The earthquake-damaged slash mostly distributed in the two sides of main fault zones, earthquake-affected areas and disaster density decreased with the increase of distance from the main fault. (2) The earthquake-damaged slash mostly distributed in seismic intensity of IX and above. The region with greater seismic intensity had larger disaster density. Collapse and landslide distributed in high seismic intensity zone. (3) Hard rocks were easily caused secondary geological disasters by seismic waves. (4) The earthquake damaged slash mostly distributed within 0.5 km away from the river and decreased with the increase of distance from river. Collapse and landslide often appear at valley and the steep slope which more than 40 degree. The biggest hazard density appeared at altitude between 2000 m and 2500 m
Year
DOI
Venue
2011
10.1117/12.896302
Proceedings of SPIE
Keywords
Field
DocType
Wenchuan Earthquake,Secondary Geological Disasters,Distribution Characteristics,Earthquake-damaged Slash,Disaster Density,RS,GIS
Seismology,Geographic information system,Earthquake scenario,Fault (geology),Altitude,Seismic microzonation,Seismic wave,Landslide,Geology,Environmental Seismic Intensity scale
Conference
Volume
Issue
ISSN
8009
null
0277-786X
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Hui Yu100.34
Yong Luo262735.13
Zhijun Zheng362.90
Yulian Sun400.34
Yuewei Ma500.34