In fact, disasters are followed by a great loss of livers, property, environment and physical infrastructure, basically hazards and disasters can be classified in two categories –natural manmade. The occurrence of Natural disasters like floods, earthquake, tsunami, tornado, landslides, drought, etc. cannot be prevented while manmade disasters can be avoided by meticulous planning and precautions. With population-explosion, urbanization and other commercial activities have grown up tremendously activities have grown up tremendously. As such man has started misuse, abuse and overuse of natural resources. Deforestation, tourism and other activities in show-clad areas or coastal zones, industrialization etc. have dwindled the ecobalance. Green house gases and industrial and vehicle smoke has caused ozone layer depletion. Nuclear tests in oceans and underground, production of hazard chemical products has added to the problem of environmental pollution. These man-made hazards have posed a challenge for survival of life (both fauna and flora) on the earth. Keeping in view the massive destruction, need was felt for disaster and hazard management. Thus, forewarning systems are development. And arrangements are being made for relief and rehabilitation work in the aftermath of any natural or man-made disaster.
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