Disaster management is managing a disaster managing it maat be natural & artifical disaster 
when a disaster occur we can manage it in several ways
1. when a earth quake occurs plz go stay in big open yard where there are no buildings and trees so can protect your self from danger accident one of  treat full disaster which can a lot of damage to life as well as property so measures must be taken 
such as we must off our main switch
spray co2
spray water to avoid this loss
3.cyclones is kind of natural disastser
so we must take care must not come out during this peroid