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Risk assessment is one of the key elements of a natural disaster management strategy as it allows for better mitigation and preparation. The nonstructural characteristic of drought impacts has hindered the development of accurate, reliable and timely estimates of severity and planning in most of the cases. So drought risk assessment may help in the delineation of major areas facing drought, and thereby management plans can be formulated to cope with the disastrous effects of this hazard.
In recent years, geographic information system (GIS) and remote sensing (RS) have played a key role in studying different types of hazards. This study stresses upon the use of remote sensing and GIS in the field of drought risk evaluation. In the present study, an effort has been made to derive drought risk areas facing agricultural as well as meteorological drought in Bankura district of West Bengal by use of conventional data and available satellite images. The approach included creation of a spatial database and its integration in GIS environment by developing a suitable ranking and rating scheme for the generation of drought severity map. The results obtained provide information on severity of drought vulnerability, which has practical relevance to agricultural importance and for planning drought management and combating drought.
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- Drought Risk Assessment Using GIS and Remote Sensing
Srabasti Sinha Roy
- Springer India
in-adhesives, MKVS, Zühlke/© Zühlke