Christchurch 2010 earhtquake

Question 1

what date?

Answer 1

4th September 2010

Question 2

tectonic plates involved

Answer 2

Pacific and Australian plate

Question 3

how long did earthquake last for?

Answer 3

40 seconds followed by hundreds of aftershocks

Question 4

impacts

Answer 4

• 10,000 homes suffered minor damage
• most damage in CBD along coastline
• liquefaction of the river sediments on which the city is built caused some lateral spreading and ground cracking in the suburbs
• many areas left without power, water sanitation services and gas
• triggered landslides outside in Rakia George

Question 5

responses

Answer 5

-New Zealand government pledged to provide 90% of the funds needed to repair Christchurch’s infrastructure
this will result in economic boom
-red cross and St Johns ambulance services assisted injured

Question 6

3 phases to response

Answer 6

1. rescue- rescuing those trapped and injured and moving others to safety
2. recovery-days/weeks after, search for people who had been killed. water/power restored/provided, portable toilets distributed
3. rehabilitation-long term, buildings strengthened, some businesses relocated, services restored

Question 7

Canterbury Earthquake Recovery Authority

Answer 7

spearhead reconstruction of christchurch costing $13 billion. split into zones
red zone=worst affected residential areas, government buy off 5000 worst affected insured properties, homes won’t be repaired
green zone=10,000 homes are likely to be rebuilt

Question 8

most common way to reduce impacts of liquefaction?

Answer 8

increase strength of foundations