Journal
GEOCARTO INTERNATIONAL
Volume 37, Issue 19, Pages 5693-5715Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10106049.2021.1923831
Keywords
Landslide susceptibility mapping; Artificial Neural Network; sensitivity analysis; Idukki district; Kerala landslides
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The study developed two ANN models to generate landslide susceptibility maps, showing similar trends with the observed landslide locations in the region.
Idukki district faced adverse mishappenings during the 2018 Kerala landslides due to incessant torrential rainfall. This study emphasizes developing an efficient and accurate ANN model to integrate the data, process and generate landslide susceptibility maps. Fifteen conditioning factors that influence landslides' occurrence opted in the study constitutes 49 input neurons to the ANN model (L-49). Seven inputs with high robustness were identified using the sensitivity analysis approach and were adopted to generate a new ANN model (L-7). Both ANN models were processed to obtain an optimal output with lesser cross-entropy error. The landslide susceptibility maps derived from these ANN models show similar trends with the region's observed landslide locations. The ANN models were validated using ROC, and it provided a very good fit with AUC values of 0.91 and 0.83 as prediction rate for ANN models L-49 and L-7,L- respectively.
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