HazardRisk

Question 1

How much of the world’s population lives in areas of significant seismic hazard?

Answer 1

60%

Question 2

Why is there a larger impact from earthquakes now as opposed to in the past?

Answer 2

a few reasons:

• more people (higher population means more damage/injury)
• more complete record of earthquakes nowadays as opposed to historically
• taller buildings more susceptible to damage

Question 3

What is the equation for earthquake risk?

Answer 3

Earthquake risk = seismic hazard * Vulnerability * exposure

Question 4

describe what factors go into the seismic hazard component of the risk equation

Answer 4

strength of earthquake
distance from epicenter
depth of earthquake
soil type
duration

Question 5

describe what factors go into the vulnerability and exposure component of the risk equation

Answer 5

population density
quality of construction
level of development
level of population preparedness
time of disaster

Question 6

What area has the most difficult time with early warning systems?

Answer 6

areas close to regions of offshore faults as tsunamis arrive so quickly that there is no warning