Disaster is a sudden, calamitous event bringing great damages, loss, and destruction and devastation to life and property. The damage caused by disasters is immeasurable and varies with the geographical location, climate and the type of the earth surface/degree of vulnerability. This influences the mental, socio-economic, political and cultural state of the effected area.
In the awake of sufferings caused by natural and man-made disasters in the last couple of decades, a new realization is taking place in the contemporary world. it is the realization of importance of disaster preparedness, early warning and effective emergency response. with the comprehension of importance of disaster management, there triumphs a general conception minimize the threats to life, livelihoods and infrastructure, through effective public awareness, utilizing technology--based systems.
With the paradigm shift towards disaster management approach in recent years, preparing and planning for hazards in a proactive manner rather than to the disaster is practiced through disaster managers. this anticipatory approach has evolved after a strong realization that post-disaster relief remains ineffective if no measures are taken before the disaster strikes. therefore it can be claimed that preparedness is actually the most important phase of post-disaster management.