Seismic Case Studies
Study online at https://quizlet.com/_gcaxkz
Enriquillo fault (northern edge of the Caribbean tectonic plate,
which slips eastwards by 8cm/yr)
Mag 7.0
seismic - Haiti Port au Prince 2010 Death toll 220,000
EU gave $330mil and US gave $100 mil.
60% below poverty line in Haiti
Political instability (ranked 171/180 on corruptions index)
Transform boundary -> Australian and pacific plates
Mag 6.3
4km deep focus, epicentre was 10km from city
360 aftershocks
In 2011 Christchurch had a pop of 360k
seismic - NZ Christchurch 2011, aftershock of 2010
Over 185 deaths and 6000 injured
$40 bil in rebuild costs after the EQ
32% decrease in tourism.
EQ damaged 80% of the sewage system
The probability of an aftershock was only 25% -> unexpected.
Pacific plate is being subducted by the Okhotsk Plate -> conver-
gent boundary.
Mag
Death toll was 20,000. 65% of the victims were aged 65 or over
$300 bil in damages
seismic - japan tohoku fukashima tsunami 2011 Tsunami walls built in 2008 were 8m high
80k ppl within a 12 mile radius had to be evacuated due to radiation
contamination
70% of Japan is mountainous, forcing urban areas into low lying
coastal areas.
First tsunami warning was 3 minutes after the EQ -> no warning
Caused by a sudden slippage along the destructive plate margin
where the Indo-Australian plate is being subducted beneath the
Eurasian plate.
Mag 9.0
seismic - indonesian sumatra boxing day tsunami 2004 Affected 14 countries
294,000 killed
Globally over £700 mil had been committed by the end of the year
1982-2002, 157 tsunamis were recorded worldwide and only 19
were outside the pacific.
Mag 7.9
Converging, between the Indian plate going under the Eurasian
Plate
seismic - sichuan china 2008 88,000 deaths
Damage due to landslides was $86bil, including damage to 8k of
water pipelines and Chengdu airport
Chinese gov sent 140k troops
Mag 7.8
Nepal 11th most EQ prone country
Indian and Eurasian Plate
UN estimates that 8 mil ppl, 1/3 of the total population were
affected by the EQ.
90% of tourist bookings were cancelled in the immediate after-
seismic - Gorkha nepal 2015
math
Langtang village experienced an avalanche 2-3km wide of snow,
killing 300 ppl
Australia donated $4 million
rebuild costs are expected to be $10 bil, but only 50% of the initial
appeal has been funded
mag 7.5
4340 deaths
seismic - indonesian sulawesi 2018
liquefaction and landslides
IX on mercalli
1/2
Study online at https://quizlet.com/_gcaxkz
Enriquillo fault (northern edge of the Caribbean tectonic plate,
which slips eastwards by 8cm/yr)
Mag 7.0
seismic - Haiti Port au Prince 2010 Death toll 220,000
EU gave $330mil and US gave $100 mil.
60% below poverty line in Haiti
Political instability (ranked 171/180 on corruptions index)
Transform boundary -> Australian and pacific plates
Mag 6.3
4km deep focus, epicentre was 10km from city
360 aftershocks
In 2011 Christchurch had a pop of 360k
seismic - NZ Christchurch 2011, aftershock of 2010
Over 185 deaths and 6000 injured
$40 bil in rebuild costs after the EQ
32% decrease in tourism.
EQ damaged 80% of the sewage system
The probability of an aftershock was only 25% -> unexpected.
Pacific plate is being subducted by the Okhotsk Plate -> conver-
gent boundary.
Mag
Death toll was 20,000. 65% of the victims were aged 65 or over
$300 bil in damages
seismic - japan tohoku fukashima tsunami 2011 Tsunami walls built in 2008 were 8m high
80k ppl within a 12 mile radius had to be evacuated due to radiation
contamination
70% of Japan is mountainous, forcing urban areas into low lying
coastal areas.
First tsunami warning was 3 minutes after the EQ -> no warning
Caused by a sudden slippage along the destructive plate margin
where the Indo-Australian plate is being subducted beneath the
Eurasian plate.
Mag 9.0
seismic - indonesian sumatra boxing day tsunami 2004 Affected 14 countries
294,000 killed
Globally over £700 mil had been committed by the end of the year
1982-2002, 157 tsunamis were recorded worldwide and only 19
were outside the pacific.
Mag 7.9
Converging, between the Indian plate going under the Eurasian
Plate
seismic - sichuan china 2008 88,000 deaths
Damage due to landslides was $86bil, including damage to 8k of
water pipelines and Chengdu airport
Chinese gov sent 140k troops
Mag 7.8
Nepal 11th most EQ prone country
Indian and Eurasian Plate
UN estimates that 8 mil ppl, 1/3 of the total population were
affected by the EQ.
90% of tourist bookings were cancelled in the immediate after-
seismic - Gorkha nepal 2015
math
Langtang village experienced an avalanche 2-3km wide of snow,
killing 300 ppl
Australia donated $4 million
rebuild costs are expected to be $10 bil, but only 50% of the initial
appeal has been funded
mag 7.5
4340 deaths
seismic - indonesian sulawesi 2018
liquefaction and landslides
IX on mercalli
1/2
