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Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/787
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| Title: | A fuzzy similarity concept based rating determination and fuzzy gamma operator based thematic maps integration for landslide Susceptibility Zonation. |
| Authors: | Kanungo, D P
Arora, M K
Sarkar, S
Gupta, R P |
| Keywords: | Landslide
Landslide susceptibility zonation
Fuzzy similarity
Fuzzy gamma operator
Success rate
2009 |
| Issue Date: | 5-Mar-2012 |
| Abstract: | Spatial prediction of landslides is termed landslide susceptibility zonation (LSZ). In this study, an objective
weighting approach based on fuzzy concepts is used for LSZ in a part of the Darjeeling Himalayas. Relevant
thematic layers pertaining to landslide causative factors have been generated using remote sensing and geographic
information system (GIS) techniques. The membership values for each category of thematic layers have been
determined using the cosine amplitude fuzzy similarity method and are used as ratings. The integration of these
ratings led to the generation of LSZ map. The integration of different ratings to generate an LSZ map has been
performed using a fuzzy gamma operator apart from the arithmetic overlay approach. The process is based on
determination of combined rating known as the landslide susceptibility index (LSI) for all the pixels using the fuzzy
gamma operator and classification using the success rate curve method to prepare the LSZ map. The results indicate
that as the gamma value increases, the accuracy of the LSZ map also increases. It is observed that the LSZ map
produced by the fuzzy algebraic sum has reflected a more real situation in terms of landslides in the study area. |
| Description: | Georisk, Vol.3(1), pp.30-43. |
| URI: | http://hdl.handle.net/123456789/787 |
| Appears in Collections: | Published Articles
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