Journal - Application of remote sensing and GIS in landslide hazard zonation of Joshimath–Badrinath road corridor, Garhwal Himalaya, India

Application of remote sensing and GIS in landslide hazard zonation of Joshimath–Badrinath road corridor, Garhwal Himalaya, India

Ghan Bahadur Shrestha

Mountain Risk Engineering Unit, Tribhuvan University,

Kirtipur, Kathmandu, Nepal

P. K. Champati ray

Geoscience Division, Indian Institute of Remote Sensing,

Dehra Dun, India

Jour. Nepal Geol. Soc., Vol. 35, 2007, 67-74


Abstract

In the Himalayan region, slope stability is a major concern for developmental activities. Generally, landslide hazard mapping is carried out to identify relatively stable areas for infrastructural development. In the present study, a statistical technique, called information value method, was used to characterise different geo-environmental parameters. These parameters were then integrated to produce a landslide hazard map in the Garhwal Himalaya, India. The landslide causative factors such as lithology, geomorphology, structure, land use, drainage, and anthropogenic activities were derived from high-resolution satellite images and topographic maps, and the information was integrated in a GIS. The terrain-related factors such as slope and aspect were extracted from a digital terrain model (DTM) derived from the stereo pair data of IRS-P5 Cartosat-1 acquired on 20 November 2005. The map shows that 5%, 51%, 39%, 4%, and 1% of the total study area falls in very low, low, moderate, high, and very high landslide hazard categories, respectively. The Joshimath town as well as A.T. Nala and Marwari villages are some of the most hazardous places in the study area. Similarly, Hanuman Chatti, Benakuh, Dam Site, Lambagar, Binaik Chatti, and Paturi as well as the Govindghat–Ghat and Vishnuprayag–Marwari road corridors fall in high and very high hazard zones.

 

Member Login
NEWS AND EVENTS
  • May
    21

    Nepal Geological Society has organized a press meeting on the memory of 2015 Gorkha Earthquake on 2075/1/12 at the conference hall of Department of Irrigation, Jawalakhel

  • Feb
    06

    Nepal Geological Society organized a one day workshop on Earthquake Safety Day-2074 in 2074/10/13 at the conference hall of the United World Trade Center, Tripureshwor, Kathmandu, Nepal in association with Private and Boarding School Association Nepal (BAPSON Kathmandu Province).

Activities and Information

Activities of 17th and 18th Executive Committee
Nepal Geological Society
P.O.Box No. 231
Kathmandu, Nepal
FREEPHONE: +977-01-4437874
Email: info@ngs.org.np