ANALYSIS OF SPATIAL DISTRIBUTION OF GEOHAZARDS
IN BORTALA REGION
1)Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA,Wuhan 430071
2)Wuhan Base of Institute of Crustal Dynamics,CEA,Wuhan 430071
Abstract The Bortala Region is one of the potential area suffering from serious geohazards,where geographical types are various and complicated.By means of existing data,field investigation,DEM and geological map of the Bortala region,the main geohazard distribution were studied and geohazard susceptibility coefficients was computed by 6 independent factors (elevation,slope,relief,gap density,annual rainfall,lithology)on ArcGIS as a platform.Based on the geohazard susceptibility coefficients,the study area was divided into five classes,namely very low susceptibility,low susceptibility,moderate susceptibility,high susceptibility,and very high susceptibility,and the geohazard susceptibility map was produced.The results show that highsusceptibility zones located in moderatehigh mountains and river valleys with high reliefs,steep slopes,intensive gully and soft rock.
Key words :
geohazard
the Bortala region
ArcGIS
spatial distribution
DEM
geomorphology
Received: 02 December 2013
Published: 22 July 2014
Cite this article:
Liu Xiaoli,Li Jinggang,Li Xue et al. ANALYSIS OF SPATIAL DISTRIBUTION OF GEOHAZARDS
IN BORTALA REGION[J]. jgg, 2014, 34(4): 43-48.
Liu Xiaoli,Li Jinggang,Li Xue et al. ANALYSIS OF SPATIAL DISTRIBUTION OF GEOHAZARDS
IN BORTALA REGION[J]. jgg, 2014, 34(4): 43-48.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2014/V34/I4/43
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