Earthquake Case Studies for OCR Geography A2 Level

Earthquakes

New Zealand, Christchurch 2011

Trigger

Subduction of pacific under Austrian plate

Background

At Lyttleton 6 months after initial earthquake, there was only 25% prob of aftershock so lack of prep

Canterbury energy slapdown of earthquake caused by loose sediment in plains

Impact

Social

182 dead at lyttleton

English language school destroyed

Economic

Fall in dollar to pay for impacts

£8bn damage

On boxing day, shopping mall closed

Environmental

Houses built on park temporarily for safety

Liquefaction

subsidence

Responses

Rescued everyone possible in 24 hours

Uses emergency plan

Interest rate cut to pay for damage

Bottled water distributed after water pollution damage

Natural hazards platform: hazard resilience plan. 1- education 2- risk assessment and 3- emergency plan

Haiti Earthquake LEDC

Trigger

7 earthquak with shallow focus and only 15 miles from Port Au Prince

Between carribean and north American plate. Strike strip fault on destructive plate margin.

Background

Geology was unstable soil

Liquefaction

Shanty towns

Poor institutional capacity

Impact

Social

316,000 dead

Today people still live in tents. Hurricanes threat

 

Economic

30,000 commericla buildings destroyed

1 in 5 jobs lost

And port destroyed so no trade

Environmental

33c so rotting animals and stuff in street

Water pollution as water facilities go down

Responses

In 6 months, 98% rubble remains

1 doctor per 4000 before quake- not enough so amputations in street…esp after hospitals destroyed

EU funds $330m…but probably loads lost through corruption.

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