Movie:Tsunami Japan: Difference between revisions

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{{Attribute movie1
{{Attribute movie1
|Movie domain = terrestrial, coastal, marine
|Movie domain=terrestrial, coastal, marine
}}
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{{Attribute movie2
{{Attribute movie2
|Movie keywords = Tsunami
|Movie keywords=Tsunami
}}
}}
{{Attribute movie2
{{Attribute movie2
|Movie keywords = Earthquake
|Movie keywords=Earthquake
}}
}}
{{Attribute movie3
{{Attribute movie3
|Animation model name =
|First name contributor=Irina
|First name contributor=Irina
|Last name contributor =NHK/Overeem
|Last name contributor=NHK/Overeem
|Location movie=Japan
|Location movie=Japan
|Timespan movie=minutes
|Timespan movie=minutes
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{{Movie description
{{Movie description
|Grade level=Middle (6-8), High (9-12), Under graduate (13-16), Graduate / Professional
|Grade level=Middle (6-8), High (9-12), Under graduate (13-16), Graduate / Professional
|One-line movie description = Tsunami front progrades over land
|One-line movie description=Tsunami front progrades over land
|Extended movie description=This clip shows a tsunami front, loaded with debris, prograding fastly over agricultural fields and the nearby city of Sendai.  
|Extended movie description=This clip shows a tsunami front, loaded with debris, prograding fastly over agricultural fields and the nearby city of Sendai.  
It is estimated that the tsunami was about 10 m high when it hit the shoreline, and it traveled upto 10 km inland.
It is estimated that the tsunami was about 10 m high when it hit the shoreline, and it traveled upto 10 km inland.

Latest revision as of 16:37, 21 June 2017

Information Page: Tsunami Japan

Play Movie


Tsunami front travels near Sendai City



Key Attributes

Domain: terrestrial, coastal, marine
Keywords: Tsunami
Keywords: Earthquake
Model name: Animation model name
Name: Irina, NHK/Overeem
Where: Japan
When: minutes


Short Description

Grade level: Middle (6-8), High (9-12), Under graduate (13-16), Graduate / Professional

Statement: Tsunami front progrades over land

Abstract: This clip shows a tsunami front, loaded with debris, prograding fastly over agricultural fields and the nearby city of Sendai. It is estimated that the tsunami was about 10 m high when it hit the shoreline, and it traveled upto 10 km inland.

This tsunami was generated by a 8.9 magnitude earthquake in the Pacific Ocean on March 11th, 2011. The epicenter of the earthquake was 130km offshore of Sendai.

Theory

Tsunami is a Japanese word, meaning 'harbor wave'. Japan is affected by tsunamis relatively frequently, because it is located near a plate subduction zone. The Pacific Plate subducts beneath Japan at a very high rate of ~8cm/year. The process of thrust faulting at these plate boundaries is associated with earthquakes and subsea oceanfloor displacements that cause tsunamis.

A magnitude 8.9/9.0 earthquake happened on March 11th, 2011. This was the 5th largest earthquake worldwide since 1900.

A tsunami can travel at a speed of 800km/hr in the deep ocean, but with very long wave length (about 15 min). When such a wave reaches shallower water nearshore, the wave length decreases, because its speed decreases. Then the backend of the wave starts catching up with the front end and and its amplitude starts to increase dramatically. The observations for the March 11th tsunami wave height when hitting the shoreline near Sendai are about 4m. It hit the shore about 1 hour and 10 minutes after the earthquake shock was recorded.

Links

http://en.wikipedia.org/wiki/2011 Sendai earthquake and tsunami


References



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