Case Study – Japan Earthquake & Tsunami 11/03/11


[Click here to read an independent report]

  • A massive 9.0-magnitude earthquake struck Japan, Friday afternoon, on 11 March 2011 @ 0546 GMT
  • The quake was centred 130 kilometres to the east of the prefecture’s capital, Sendai.
  • A tsunami was sent crashing into the country’s north-eastern coast.
  • It was originally reported at a magnitude of 7.9, but later was upgraded to 8.9 and then to a 9.0.
  • It lasted 6 minutes.
  • That makes it the fifth largest recorded worldwide since 1900, according to the U.S. Geological Service, larger than the 7.9-magnitude Great Kanto Earthquake that devastated Tokyo in 1923 or the 6.8 magnitude quake that hit Kobe in 1995.
  • It had 10,000 times more energy than the magnitude 6.3 earthquake in Christchurch, New Zealand, which struck 17 days earlier

The Cause

  • Japan is located on the east edge of the Eurasian Plate.
  • The oceanic Pacific Plate subducts (sinks under) the Eurasian Plate.
  • This plate margain is “destructive” – it is not a smooth process, friction is present and the plates stick.
  • When the plates stick, tension builds up.
  • When this pressure builds up and is released, it causes a rapid shift in the plates and a lot of energy to be release, in this case about the same as the annual energy output of the UK.


  • Japan was largely prepared for the earthquake and many buildings remained standing afterwards, but it was not prepared for the subsequent Tsunami.
  • A tsunami warning extended to at least 50 nations and territories, as far away as South America.
  • Damage was caused in Tokyo and many injuries in the north where the quake was centred
  • The yen fell sharply but recouped most of its decline several hours later. Tokyo stocks fell.
  • Local television showed smoke rising from a Tokyo port building, fire in the capital’s waterfront Odaiba district and an oil refinery ablaze in Ichihara, near Tokyo.
  • A tsunami measured at anywhere from one meter to 7.3 meters hit at various places along the coast, while a 10-meter tsunami was seen at the port in Sendai, near the epicentre.
  • Aftershocks were continuing, with one hitting magnitude 7.1, according to the USGS. Tall buildings swayed violently in central Tokyo as the aftershocks hit.
  • Immediate power outages in Tokyo and eight other prefectures reportedly affected some 4 million homes.
  • In Iwate Prefecture a bridge collapsed and a building was washed away, with boats and cars swirling around in the rising waters.
  • In Tokyo, hundreds of concerned office workers tried in vain to make calls on jammed cellphone networks, some wearing hard hats and other protective headgear. Many of them streamed out of buildings in the business district, gathering in open areas. The crowd appeared spooked by the sound of glass windows rattling in tall buildings.
  • Traders said most of the selling was offshore as Tokyo traders evacuated. The yen could be in for further declines as the scale of the damage becomes known.
  • Tokyo’s major airports halted flights, though Haneda Airport was later reported to have reopened several runways. All Tokyo area trains were halted, while the shinkansen bullet train service was suspended.
  • Water could be seen rising over cars and pouring into warehouses at Onahama port in Fukushima Prefecture, with five deaths reported in Fukushima.
  • Two nuclear plants on the Pacific coast in Fukushima were automatically shut down.
  • At Fukushima the subsequent tsunami disabled emergency generators required to cool the reactors.
  • Over the following three weeks there was evidence of a partial nuclear meltdown in units 1, 2 and 3; visible explosions, suspected to be caused by hydrogen gas, in units 1 and 3; a suspected explosion in unit 2, that may have damaged the primary containment vessel; and a possible uncovering of the units 1, 3 and 4 spent fuel pools.
  • Radiation releases caused large evacuations, concern over food and water supplies, and treatment of nuclear workers.
  • The IAEA has rated the events at level 7, the same as Chenobyl, and the highest on the scale – meaning that there is a major release of radio active material with widespread health and environmental effects.
  • The situation has been further compounded by numerous aftershocks.
  • 2,000 people confirmed dead
  • 10,000 more people expected to be confirmed dead
  • 2,000 people injured
  • 530,000 people displaced, staying in 2,500 evacuation centres, such as schools and public halls
  • 24,000 people still completely isolated and cannot be reached
  • 1.2 million homes without power
  • 1.4 million homes without water
  • 4,700 destroyed houses
  • 50,000 damaged houses
  • 582 roads cut off
  • 32 bridges destroyed


  • A Tsunami warning was issued 3 minutes after the earthquake.
  • Prime Minister Naoto Kan, who convened an emergency Cabinet meeting, urged the nation to be calm and said the government will do its utmost to minimize damage from the quake. He told a news conference a large amount of damage had occurred in the northern Tohoku region.
  • A Meteorological Agency official appeared on TV urging those affected by the quake not to return home because of possible tsunamis.
    • “In some areas we have issued a warning of tsunamis of higher than 10 meters and we expect these areas will experience the high water levels soon,” said the official. “Please stay on high alert.”
  • The governor of Miyagi Prefecture asked for Japanese military forces to be sent in to help.
  • The Defence Ministry was sending eight fighter jets to check the damage, the agency said.
  • The government set up a task force at the Prime Minister’s Office. The Bank of Japan set up a disaster control team, headed by BOJ Gov. Masaaki Shirakawa, to assess the impact of the earthquake on financial markets as well as on financial institutions’ business operations.
  • In response, 91 countries have offered aid, from blankets and food to search dogs and military transport.
  • The Japanese government is among the best prepared in the world for disasters and has so far only made specific requests for help, such as calling for search and rescue teams.
  • Several charities, including Save the Children UK, British Red Cross and World Vision UK, are asking for donations.
  • A British rescue team has arrived in Japan to join the search for survivors of the earthquake and tsunami.
  • Fifty-nine search and rescue experts, four medics and two sniffer dogs flew out on a private charter plane with 11 tonnes of equipment on board.
  • Modern innovations, such as Twitter were bringing updates on the situation far earlier than the media.


BBC – Japan In Pictures

National Geographic – Japan In Pictures

Wikipedia – Japan 2011 Earthquake & Tsunami

  • bijay mishra

    data regarding tsunami in japaan

    • Joe

      I shall update with Tsunami information, the first draft of this page was drafted very early on in the incident, it’s admittedly an oversight. I’ve referred to some information in my reply to a comment below, if that is of any use to you, regarding this matter.

      • ipshit

        hi joe how r u

      • fagbitch69

        u r jesus

    • ipshit

      dont no spelin of japan

      • bob

        It’s “You do not know the spelling of Japan” and don’t be so rude, say thank you to him!

  • Hitesh kumar

    this very good information

    • Joe


  • Hitesh kumar

    sir , we want to know more about the how water reaches the houses and roads . what steps are put by the japanees govt. to take corrective measure about the suffering peoples




    i want know more on this topic , that how we can help the people living in japan ….

    • Kashish

      There are many Japan earthquake relief organisations who are over there helping those in trouble and, if you feel you could help with Japanese earthquake and tsunami relief, please donate to one of the many charities out there who are doing everything they can to help.

  • Steven

    May I say this is a fantastic, detailed, easy to understand piece of work. I am a student from the UK and need case-studies such as this.

    Thank you!

  • http://gmail chinny

    This matter is good and we want little more.

  • http://gmail sravs

    thanks for giving such a nice information with & we pay homage to al the victims of the tsunami in japan.

  • http://gmail janu

    i thanks you for giving a good imformation

  • Jess Wolinski

    Hi! I just came across your page while searching for some information on World CIties (my teacher has been pretty useless this year, and although we all love him, he hasn’t exactly prepared us well…) All these notes you have made are fantastic and really, really useful! You have just helped to save my geography grade! Many thanks! :)

  • Satyajit

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  • http://gmail manisha

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    • Hani Nadif

      How sad!!!

      • Hani Nadif

        This has really helped me in geography in which i am doing this case study at the moment.

  • Ze

    Thanks! I got lot of information for my project .

  • Purbita

    This piece helped me a lot to curtail down a brief work of the Tsunami In Japan…….

  • Shaivik Thakar

    Thanks a tone. Ur info helped me in my Geo. project on Earthquake.

  • madz

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  • http://casestudyofjapantsunami jaffa

    u don’t know the spelling of “know”. it is not no, it is know. understood!

  • http://casestudyofjapantsunami jaffa

    u don’t know the spelling of “know”. it is not no, it is know. understood! this comment is for that ipshit.

  • http://casestudyofjapantsunami chinnu darling

    nice matter nd information u had being given to me. thank you sir jeo.

    • Lola


  • Jasmina.

    Thankyou so much for this information, using this alone got me an A on my case study project in geography! I spent hours trawling the internet looking for a website with information about this but they were filled with long complicated words that ended up confusing me.
    thanks again.

    • sarika

      thanks for this..
      amzing.. i m now done with my project in geography ..

  • Fahad

    This info Helped me Lot for My Enviromental Studies Exam!!! Thnx

  • Anne

    lithika and aditi are absolutely correct….. it is very useful for us students

  • Anne

    thanks a lot joe sir, i owe u alots for this favour

  • bob

    really good information, helped a lot for my homework. im going to show the link to my teacher so we can use it in class if thats okay :)

  • Finlay

    thanks man, really useful for studying!!!!

  • smitha sivan

    thank u sir for this information

  • http://japanearthquake sonam

    it was good and help me to find lot of information

  • jezza1999

    thnx for this great information! keep up the great work on this IMMENSE blog!!!

  • zac

    better if a section for long term responses and short term responses

  • Tamanna

    dis article helped me out for mah summer project… thanks…!!:)…

  • Miagi

    it actually wasn’t the eurasian plate,it was the
    Okhotsk plate.

  • jakeradford


  • fdythv

    good short and sweet

  • ugix

    hi chloe

    • jim


  • giraffe

    the man

  • fagbitch69

    ermageerrrrddd, geography gcse in 28 daysss!111

  • fagbitch69

    This Really Helped, thanks!!!

  • Mr datswagface

    i tink dat we shood kill dem Geraffes

  • Mr datswagface


  • patient zero

    Selena has Ebo-la-la-la


    I was aapriciated in my institution because of these spectacular views.


    People of Japan should go far away before the tsunami . I pray for the people who are effected with tsunami.

  • jakeradford

    woah harsh

  • pete


  • brsjt

    cause they taste nice

  • potato

    h8 u

  • pete


  • jim


  • giraffe

    earthquake matee

  • fagbitch69


  • GhgtH

    Ooohhh la la se-y