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RS and GIS‐based Statistical Analysis of Secondary Geological Disasters after the 2008 Wenchuan Earthquake
Author(s) -
CHEN Jianping,
LI Jianfeng,
QIN Xuwen,
DONG Qingji,
SUN Yan
Publication year - 2009
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.2009.00101.x
Subject(s) - landslide , geology , lithology , seismology , china , terrain , distribution (mathematics) , geography , cartography , archaeology , geochemistry , mathematical analysis , mathematics
Using RS and GIS means, this article analyzes the general geological characteristics and the structural belt distribution features in Wenchuan County, Sichuan province, P.R. China as well as the characteristics of the large‐scale landslides, mud‐rock flows, earthquake lakes, etc., after the earthquake on May 12, 2008. Based on the above work, comprehensive indoor and outdoor research is launched on disaster distribution characteristics and their relationship with earthquakes, terrains, strata, lithology, and structures. Weights of evidence method is utilized to quantitatively analyze and evaluate the spatial distribution of secondary geological disasters after the earthquake occurred. 3 remedying grades for secondary geological disasters are derived from the results of the weights of Evidence, followed by suggestions given to remedy earthquake secondary disasters.