Selected landslide types in the Central Himalaya: their relation to geological structure and anthropogenic activities

Anita Pande (), R.C. Joshi () and D.S. Jalal
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Anita Pande: Kumaun University, Nainital
R.C. Joshi: Kumaun University, Nainital
D.S. Jalal: Kumaun University, Nainital

Environment Systems and Decisions, 2002, vol. 22, issue 3, 269-287

Abstract: Abstract In a region that is highly sensitive to tectonic instability, the fragile nature of the Himalayas becomes further adversely affected by anthropogenic intervention. In the present study observations indicate that the landsliding process occurs along various tectonic zones where it is assisted by human activities. Bedding and joint plane dip slopes, high joint and joint set frequencies, low vegetation cover, high monsoonal rainfall, thin soil cover and anthropogenic activities were found to be the main causative factors of the landslides. Anthropogenic activities include local path, canal and road construction, mining and quarrying, overgrazing, deforestation and unscientific agricultural practices, such as tilling steeper slopes (>30∘) without contour benches and without provision of drainage ditches, and overcropping without giving rest to the overtaxed soils. Where slope conditions are critical human activities should be controlled so as to minimise the slope failure processes. Various recommendations are proposed.

Keywords: Himalayas; landslides; tectonic instability; anthropogenic factors (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1023/A:1016536013793

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