Landslides and Villages

Trigonometric functions were applied between geological bedding planes and topographic slopes to reclassify the topographic slopes as dip slopes (cataclinal) and escarp slopes (anaclinal). The following maps and histograms derived from these new slope maps with cataclinal and anaclinal slopes  helped to understand the spatial relationships among  threshold dip slopes, landslides, and human settlements. This weird spatial relationship makes the village location in Himalayan region extremely dangerous during monsoon season and earthquake events.

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Dr. Tank Ojha

Text Box: Weird Spatial Relationships among People, Climate, Topography, and Geology in the Himalayan Region of Nepal

Tank Ojha, Ph. D. , Adjunct Professor
Department of Geoscience, University of Arizona, USA 
Consulting Geologist & Geo-disaster Risk Analyst, Geo-Information Specialist for Natural Resource Management  (Email:,