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Recent Activities Historical Database» India Landslide map Interaction»	Landslide is defined as a downward movement of rock, earth or debris material. Landslides in the mountainous terrains are natural degradational processes, and one of the most important landscape building factors. The problem of landslide becomes more aggravated in the rainy season, though the causative factors are of geological and geomorphological nature. Landslides are classified based on its speed of movement and the type of material it carries. Landslides frequently cause problems by killing people and livestock besides damaging property and blocking vital communication links and always occupies a rank in the top ten natural disasters. Incidences of landslides are not uncommon in India. Northern and north eastern Himalaya are severely affected by landslides although there are few cases in Western Ghats. Remote sensing (satellite and aerial) data have been proved to be useful for landslide inventory mapping both at local and regional level. It is also used for generating maps such as updated lithology, geological structure, geomorphology, land use / land cover, drainage, landslide scarp etc. These maps can be combined with other terrain maps like slope, slope aspect, slope morphology, rock weathering and slope-bedding dip relationship in GIS environment to map the vulnerable areas for landslides. At present the Indian Remote Sensing Satellite (IRS-1D, IRS-P6) data can address these problems upto a semi-detailed level on 1:25,000 scale. But the availability of high spatial resolution satellite data such as CARTOSAT 1 & 2 has enhanced the scope of this work on a detailed level on 1:5,000 scale. Digital Elevation Models (DEM) derived from CARTOSAT 1 is of great help to landslide studies.
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