Lectures 1&2 Flashcards
Natural disaster
Extreme natural events where large amount of energy is released in a short period of time
What do natural disaster involve
Casualties, disruption to society and large economic loses
When do natural hazards become natural disasters
When they intersect with vulnerable communities
Frequency(F)
Number of occurrence in a given length of time
Return period (P)
Length of time between similar events
What’s are F and P based on
Statistical probabilities
Magnitude (M)
Amount of energy fuelling a natural events
Besides knowing F M P what should be considered for that given area
Cost-benefit analysis
The number of great natural disaster is ________ with _______
Increasing time
The number of _____-______ disasters has been _________ in recent years
Man made decreasing
What type of disasters bring the lay fatalities and damage
Storms and floods
Where on earth can the most disasters be found
Asia
Where do natural occur the most
Densely populated area
The number _______ disasters _______ is ________ with time
Natural fatality increasing
_____ losses from natural disasters are ______ with time
Economic increasing