Where?
|
Off the east
coast of the northern part of Honshu. (Main Island of Japan.) Epicentre 72km
from the coastline near the city of Sendai. The Pacific plate, which moves at a rate of 8 to 9 cm
per year, dips under Honshu's underlying plate releasing large amounts of
energy. This motion pulls the upper plate down until the stress builds up
enough to cause a seismic event
|
When?
|
March 11 2011
- the main period of shaking lasted 6 minutes. It hit at 14:46 local time or (05:46 GMT)
|
How strong?
|
Magnitude 9.00
on the Richter scale – Japan’s most powerful since records began. There have
been over 600 aftershocks, the largest of which measured 7.1 on the Richter
scale. The energy released was 600 times more than the Hiroshima bomb and
would power Los Angeles for a year.
Tsunami
consisted of 10 waves each a kilometre apart which became a giant wall of
water by the time it hit the coast, and in places it was 15m high, topping
the 10m high walls
|
Plates?
|
The Pacific
plate subducting under the North American plate. The North American plate was
thrust upwards displacing part of the Pacific Ocean above it.
|
Primary
effects?
|
Social
·
There were very few deaths reported from being crushed in
collapsed buildings.
·
15,883
deaths, 6,145 injured, and 2,671 people missing - 14,308
drowned, 667 were crushed to death or died from internal injuries, and 145
perished from burns
·
4.4 million households in
northeastern Japan were left without electricity and 1.5 million without
water
Economic
·
Most buildings have earthquake resistant design and stood up
well to the initial shaking
Environmental
·
·
There were immediate problems with electricity and water
supplies in Northern Japan. 1.5 million people were without water immediately
after the earthquake and 4.4 million people without electricity.
·
Northern Japan's transport network suffered severe
disruption. Many sections of Tōhoku Expressway serving northern Japan were damaged.
·
Undersea cables were damaged causing disruption to telecommunication
networks.
|
Secondary
effects?
|
Social
·
A dam in NE Japan failed sweeping away homes and killing 8
people.
·
Over 300 000 people were evacuees and need new housing.
·
shortages
of food, water, shelter, medicine and fuel for survivors and as of
late March, some were given one meal a day
·
Fuel
shortages hampered relief action
·
Residents
of Tokyo were reported to have gone on panic shopping sprees as daily
necessities were sought after and gasoline was stocked up
·
Jobs lost
·
19 foreigners died
·
100,000 children were uprooted from their homes and 236
children were orphaned
·
reports
of sexual assaults actually fell 35.7 percent to 81 cases
·
531,000
non-Japanese residing in Japan departed the country
·
Mental
Trauma as many lost homes, livelihoods, with whole communities being swept
away, some up to a millennia old
Economic
·
Major economic impact in Japan. (See below)
·
industrial
production suspended in many factories
·
129,225
buildings totally collapsed
·
heavy
damage to roads and railways as well as fires in many areas, and a dam collaps
·
90% of
the 29,000 fishing boats in Miyagi, Iwate, and Fukushima prefectures were
rendered unusable
·
total
damage to Japan's fishing industry was estimated at ¥1.26 trillion
·
Toyota, Nissan and Honda, which completely suspended auto production until 14
March 2011 with other companies like Nippon Steel Corporation , Toyo
Tire & Rubber Company, Sumitomo Rubber Industries and GS Yuasa
·
51
reported cases of scams or frauds related to the disaster, with losses
amounting to around ¥12.6 million
·
The
factory shutdowns, power cuts and the consequent presumed impact on consumer
confidence could hurt the national GDP for several months
·
i ncreased
job availability during restoration efforts
·
Japan's
economy accelerated substantially through the next two years, at more than
its former rate
·
reconstruction
of damaged areas in Tōhoku beginning in 2011 produced a boom in construction
jobs and business in the area
·
644
companies in Japan had been forced into bankruptcy by the disaster
·
Silicon
wafer production has been suspended at factories owned by Shin-Etsu Chemical
and MEMC Electronic Materials,
which together account for 25% of the global silicon wafer production
which in turn impacted semiconductor production
·
Environmental
·
The tsunami generated by the earthquake (max 40.5 m high) was
devastating to northern Japan and caused most of the deaths and destruction.
·
Many towns and villages along the northern coast were entirely
swept away. Many major
north-eastern
ports were destroyed including Sendai.
·
Nuclear power plants along the coast have been damaged. It is
thought that the 4 reactors at the Fukushima nuclear power station will be
permanently shut down as the damage cannot be repaired and the reactors
brought safely under control. The local area has been evacuated and there are
widespread concerns about radiation leaks
·
23,600
hectares of farmland, mostly rice paddies, were damaged by the tsunami
with salt from the wave potentially affecting the crops for years to come
·
4.37
million chickens in northeast Japan died and 3%–4% of Japan's rice
production were in the affected areas
·
prospect
of a long-term health and environmental hazard in need of an expensive cleanup
|
Cost to
Japan?
|
Cost of rebuilding which has been
estimated at ¥25 trillion or $300 billion. The northern Tōhoku region, which was most
affected, accounts for about 8% of the country's gross domestic product, with
factories that manufacture many products. Major Corporations such as Toyota,
Sony, Nissan and Honda suspended production. (Now producing again.)
Japan's real gross domestic product
contracted 3.7% for the quarter of January to March 2011
|
Response?
|
·
Prime Minister Naoto Kan mobilized the Japan
Self-Defence Forces, many 1000s of soldiers helped search for survivors and
continue to help displaced people.
·
many
countries sent search and rescue teams to help search for survivors
·
lack of
disorder immediately following the earthquake but by 20 March 2011 250
thefts had been reported
·
The
yakuza (a japanese gang) opened their offices to refugees and sent dozens of
trucks with supplies to affected areas
·
Displaced people are being housed in temporary shelters and
being provided with food and water.
·
8,800
temporary units were planned in Iwate, 10,000 in Miyagi, and 19,000 in Fukushima
and 88% of the required temporary housing had been built by the end of July
2011
·
Voluntary
reduced electricity use by consumers in the Kanto area helped reduce the
predicted frequency and duration of blackouts
·
The tsunami warning system is being looked into to see if more
warning can be given especially in smaller coastal villages. ‘Tsunami walls’
need to be higher.
·
Rebuilding programmes are being planned and restrictions may be
placed on how close you can build to the coastline and/or the design of
buildings.
·
The vast quantity of data collected during the event (Japan is
the leading country for earthquake research) is being analysed to see if
there can be better predictions and warning the next time.
·
Japan said they would ask for any specialist help but did not
need lots of charitable financial help.
·
128
countries and 33 international organizations had offered assistance to Japan
who specifically requested teams from Australia, New Zealand, South Korea, Germany, the
United Kingdom and the United States
·
Requested the activation of the International Charter on Space and Major Disasters, giving diverse satellite imagery of affected regions
·
Japanese Red Cross reported $1
billion in donations
·
Twenty-thousand
US military personnel, including 19 naval vessels and 120 aircraft, were
mobilized to provide assistance or move supplies to the disaster area
·
the Bank of Japan, in an
attempt to maintain market stability, injected 15 trillion yen into the
money markets to assure financial
stability amid a plunge in stocks and surge in credit risk and set up
an emergency task force to ensure liquidity in the aftermath of the disaster
·
By the end
of July 2011, 47 percent of the 22.63 million tons of debris in Iwate,
Miyagi, and Fukushima Prefectures had been removed, 73.7% of farming businesses affected by the
quake and tsunami in eight prefectures had resumed operations while 35.5% of
fishing entities had returned to business
·
The
government in Japan committed to cleaning up the damage from the disaster
·
The Japanese yen soared
against most major currencies following the earthquake, and reached a
post-World War II high of 76.25 yen to the US dollar on speculation that
Japanese investors would repatriate assets to pay for rebuilding, but
as Japan relies on exports this dampened the economy, leading to the G7
selling yen against the dollar
·
The
government set up an advisory panel of intellectual figures on 14 April 2011,
named the Reconstruction Design Council
·
Many
seaside communities in Japan have reexamined their tsunami defenses and
reaction plans in response to the disaster
·
Japanese
media reported in 2012 that up to 25% of special funds allocated by the
government for disaster recovery and relief were being used outside the
disaster area on projects unrelated to the earthquake and tsunami such
as nuclear research
·
Social
buying sites have launched on-line campaigns in which several million dollars
were raised for relief organizations working in Japan
·
By 9:30
UTC on 11 March, Google Person Finder, which
was previously used in the Haitian, Chilean, and Christchurch,
New Zealand earthquakes, was collecting information about survivors
and their locations
|
Cost to the
world?
|
·
The Nikkei stock market fell as did other Asian stock markets.
·
the German DAX lost 1.2%
within minutes whereas Major U.S. stock market indexes rose between
0.5% and 0.7%
·
Oil
prices also dropped as a result of the closure of Japanese refineries
·
The
share prices of the biggest reinsurance companies Munich Re and Swiss
Reinsurance Company fell, losing around 10 billion
·
The share price of major insurance companies fell as big payouts
are expected. ($10 billion.)
·
The reputation of the nuclear industry has been badly damaged at
a time when many governments worldwide were thinking it could be a possible
solution to fossil fuels running out. Gas prices have risen as Japan starts
buying gas to compensate for the loss of nuclear power.
·
significant
setback for the so-called nuclear renaissance with an anti-nuclear
demonstration of 50,000 people in Stuttgart and the cancellation of a pro-nuclear press conference in
the United Kingdom
|
Tuesday, 12 February 2013
2011 Japanese Tsunami
Labels:
Case Studies,
Physical Geography,
Tectonics
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