Unit 4 - Case Studies (New Zealand Earthquakes) Flashcards
What year was the first earthquake?
2011
How many people did the 2011 earthquake kill?
185 people
Where did the 2011 earthquake occur?
Christchurch - it was very close to the city of Christchurch
How many aftershocks were there in 2011?
10
How many people were seriously injured and why was that?
164 people due to the collapse of two large buildings
What time did the 2011 earthquake occur?
12:51pm (lunchtime)
What magnitude was the 2011 earthquake?
6.3
What year was the second earthquake?
2016
How many aftershocks were there in 2016?
313 - still a low death toll however
What magnitude was the 2016 earthquake?
7.8 - meaning the magnitude was more than 10 times greater than the earthquake in 2011
What time did the 2016 earthquake occur?
It happened just after midnight
Whereabouts did the 2016 earthquake occur?
55 miles northeast of Christchurch meaning it was further away than the densely populated city
How many people died in the 2016 earthquake?
2 people
What response methods did they have in place which is a sign of good mitigation strategies?
They had emergency response teams at the ready, their immediate priority was ensuring the delivery of clean water and food
How much was the damage costs estimated at in 2016?
$2 billion by the government
What were many people left without during the 2016 quake?
Power or phone lines
What did the local electricity distribution company undertake as a mitigation strategy?
Detailed seismic risk assessment and mitigation - we can see how effective this has been due to their being a clear change in the impacts from 2011 to 2016
How much did they spend on seismic strengthening?
$6 million dollars
New facilities were designed to withstand a…
…500 year seismic event with little or no distruption
What have they been educating the local area on?
How to look after themselves when an earthquake occurs
What were the majority of deaths from in 2011?
The CTV building due to it not meeting construction standards
What have they done to the CTV building since the 2011 earthquake?
It has been improved and this has reduced earthquake damage
What have they installed to operate through earthquakes?
Telecommunication buildings to operate through earthquakes using seismically braced equipment
