Open AccessApplication of Morishita Spread Index in the study of landslides from the Kulekhani watershed, central Nepal
Author(s) -
Mahesh Singh Dhar,
Megh Raj Dhital
Publication year - 2004
Publication title -
journal of nepal geological society
Language(s) - English
Resource type - Journals
ISSN - 2676-1378
DOI - 10.3126/jngs.v30i0.31690
Subject(s) - landslide , watershed , hydrology (agriculture) , erosion , sedimentation , geology , streams , landslide classification , index (typography) , physical geography , environmental science , geomorphology , geography , sediment , geotechnical engineering , computer network , machine learning , world wide web , computer science
The Kulekhani watershed was severely affected by sedimentation, landslides, and gully erosion in 1993. The sediments produced were ultimately supplied to the reservoir decreasing its gross storage capacity. A statistical tool, called Morishita Spread Index, was applied to detect the landslide distribution pattern in the watershed. Morishita Spread Index was greater than 1 and decreased with increasing mesh scale. Such a trend indicates a cluster-type of distribution pattern. The landslides are concentrated mainly in the gullies and streams, and there is a high probability that landslides will continue to occur there in the future.