NDLI: SPATIAL RESOLUTION EFFECTS OF DIGITAL TERRAIN MODELS ON LANDSLIDE SUSCEPTIBILITY ANALYSIS

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SPATIAL RESOLUTION EFFECTS OF DIGITAL TERRAIN MODELS ON LANDSLIDE SUSCEPTIBILITY ANALYSIS

Content Provider	Scilit
Author	Chang, K. T. Dou, J. Chang, Y. Kuo, C. P. Xu, K. M. Liu, J. K.
Copyright Year	2016
Description	The purposes of this study are to identify the maximum number of correlated factors for landslide susceptibility mapping and to evaluate landslide susceptibility at Sihjhong river catchment in the southern Taiwan, integrating two techniques, namely certainty factor (CF) and artificial neural network (ANN). The landslide inventory data of the Central Geological Survey (CGS, MOEA) in 2004-2014 and two digital elevation model (DEM) datasets including a 5-meter LiDAR DEM and a 30-meter Aster DEM were prepared. We collected thirteen possible landslide-conditioning factors. Considering the multi-collinearity and factor redundancy, we applied the CF approach to optimize these thirteen conditioning factors. We hypothesize that if the CF values of the thematic factor layers are positive, it implies that these conditioning factors have a positive relationship with the landslide occurrence. Therefore, based on this assumption and positive CF values, seven conditioning factors including slope angle, slope aspect, elevation, terrain roughness index (TRI), terrain position index (TPI), total curvature, and lithology have been selected for further analysis. The results showed that the optimized-factors model provides a better accuracy for predicting landslide susceptibility in the study area. In conclusion, the optimized-factors model is suggested for selecting relative factors of landslide occurrence.
Ending Page	36
Page Count	4
Starting Page	33
e-ISSN	21949034
DOI	10.5194/isprs-archives-xli-b8-33-2016
Alternate Webpage(s)	https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B8/33/2016/isprs-archives-XLI-B8-33-2016.pdf
Journal	The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Volume Number	XLI-B8
Language	English
Publisher	Copernicus GmbH
Publisher Date	2016-06-22
Access Restriction	Open
Subject Keyword	Physical Geography Artificial Neural Network Landslide Susceptibility Conditioning Factors
Content Type	Text
Resource Type	Article

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