The 2011 Tohoku Earthquake and Tsunami (Japan)
The 9,0 Richter scale earthquake and tsunami (東北地方太平洋沖地震, written the Western way: Tōhoku Chihō Taiheiyō-oki Jishin, ’Tohuku region off-Pacific Ocean shore earthquake’) happened on the East coast of Japan, not far from Sendai int he Tohuku region on March 11th, 2011, at 1446hrs local time (0046hrs CDT). According to Japan Metorologic Institute this was the largest earthquake to happen is Japan ever. The quake was followed by a tsunami, with 10m(40ft) tall waves. The catastrophy already took several thousand official victims, but a lot more is feared to be dead. Mijagi prefekture has over 10 thousand people missing. The material damage is also very high, roads and railroads have been destroyed, fire broke out in several locations and dams have broken thru. In Northern Japan over 4,4million households were without electricity, and 1,4million without water. Many generators stopped and at least 2 nuclear power plants are known to be damaged seriously, which led to the evacuation of the nearby area.
The tsunami caused by the quake required alarms and evacuations in Japan and 20 other countries as well, including the Western coast of North and South America. The waves that hit Japan were 10m tall, smaller waves reached other countries as well. The tsunami caused serious damage even in Chile. Water went in as deep as 10kms(6miles) into mainland Japan at some places.
The United States Geological Survey (USGS) data says that this was the largest quake ever in Japan, and the fourth biggest on Earth since measurements exist. Italian scientists guess the quake had a pivotal fault of 25cms(10in) according to press; Richard Gross, geophisicist of NASA (Jet Propulsion Labs) says the figure axis (not the same as above) has changed by 17cms(7in), which causes days to be 1,8 microseconds shorter on avarage. (In general every change in the Earth mass has effect on the movement of the Globe, but the vast majority of these cannot be measured.)
Epicenter, hipocenter and afterquakes
The epicenter was 125kms(80miles) off the Japanese coast, the hipocenter 24kms(15miles) deep. The 9,0 earthquake was followed by continous afterquakes, some were as strong as 5,8 and 7,4. The quake was only recognizable from Europe by instruments.
Tsunami
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The forcast of the energy of the tsunami following the earthquake
After the quake a tsunami emerged, which was guessed to be 6m high, but was later corrected to 10m. The Pacific Tsunami Warning Center issued several warnings for March 11th, among them for Japan (Mortheast part of Honsu island), but also warned all countries in the Pacific region. Tsunami alarm was raised in Chile, Russia, Mexico, Hawaii, Australia, Indonesia, the Philippines, the Marshall Islands, PapuaNew Guinea, Nauru and the North Mariana Islands. 11thousand people were evacuated from Russian Sahalin Islands, Hawaii also ordered the beach area to be evacuated.
The tsunami reached North America in 10 hours, first at Oregon, later the whole coastline, Mexico and the US, among others.
Damages
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Nuclear power plants in Japan
The caused the death of several thousand people, left a lot injured, over 10thousand are still missing. The capital of Japan, Tokyo only suffered one bigger fire, smoke emerged from a building. In and around town there is no electricity in 4million households. The tsunami swept away cars, ships, warehouses. In Fukusima, one building collapsed.
A refineryof the Cosmo Oil Company caught fire in Tsiba prefecture, Ichihara city, North of Tokyo. The nuclear power plants shut down automatically, there was an alarm raised int he Fukusima plant, because the cooling system shut down due to the quake. The Onagawa plant was also on fire.
The railroads were damaged in several places, the super expresses were stopped. Narita airport by Tokyo was shut down, as well as the underground and other local railways.
On March 12th, 2011, at 1536hrs there was a major explosion in the Fukusima power plant reactor #1, and again in reactor #3 on March 14th.
The economic aftermath of the quake
In the Tokyo Stock Exchange the shares fell after the quake. Tohuku region gives 8% of the Japanese GDP, closure of the factories, power failures could have effect on the Japanese GDP for months.
The internetes media
Google launched a search site called Japan Person-Finder néven, that works two ways: one to upload names and information to identify the missing, the other can be used to find information about the missing.
Facebook also launched several groups after the quake, which also warn you about fake donation sites started shortly after the earthquake.
http://www.bukisa.com/articles/475006_the-2011-tohoku-earthquake-and-tsunami-in-japan
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