Japan 2011 EQ

Question 1

primary hazards

Answer 1

offshore earthquake 7.9

Question 2

secondary hazards

Answer 2

tsunami waves (15m 200km/h)
liquefaction
aftershocks

Question 3

social impacts

Answer 3

20k deaths 6k injuries 2k unaccounted
125k buildings destroyed
1 mil damaged
heavy damage to road + railways
4.4mil residents w/ no elec

Question 4

economic impacts

Answer 4

port of Tokyo damaged
$235 billion in damage
wiped 5-10% off Japans stock market value

Question 5

Management

Answer 5

EQ hazard map done in 2010
every scl has EQ drill monthly
EQ proof buildings from ‘95 Kobe EQ, strict regs

Question 6

Response

Answer 6

all TV switch to eq coverage
japanese army rescued 26k
26m single meal portions, + water and medicine
construction of temp houses began 8 days after

Question 7

effective?

Answer 7

1 min warning for eq
10-20 for tsunami
sea wall prevented water getting back to sea
buildings couldnt cope w tsunami
effective response
long term economic recovery still happening with Fukushima clean up

Question 8

Env. Impacts (fukushima)

Answer 8

• near meltdown
• cooling system knocked out, reactor overheated
• 100,000 evacuated