Earthquake Causing Tsunami Diagram
The sudden shaking or rolling of the earths surface is called an earthquake. Earthquakes are caused by the release of built up pressure at plate boundaries.
Japan Earthquake And Tsunami
Actually earthquakes occur daily around the world according to one estimate about 8000 occur every year but most of them are too mild to be noticeable.
Earthquake causing tsunami diagram. The crust is a thin hard shell that floats on the denser hotter rock of the mantle. Tsunamis have hit washington in the past and they will happen again in the future. What is an earthquake and what causes them to happen.
The 2004 indian ocean earthquake and tsunami also known as the boxing day tsunami occurred at 005853 utc on 26 december with an epicentre off the west coast of northern sumatra indonesia. This sudden motion is the cause of the tsunami because it gives an enormous shove to the overlying water. They can destroy buildings and infrastructure.
Age making it the second most fatal in recorded history with more than 275950 deaths reported from the magnitude 90 earthquake and subsequent tsunami that hit the indian ocean on dec. The rupture area of this earthquake is situated within the southern segment where historical earthquakes include the earthquake of 1797 and the m w 90 1833 sumatra earthquake. Tsunamis can also occur with equally devastating and deadly effects.
The most common cause of a tsunami is an underwater earthquake but they can also be caused by other events such as a volcano or underwater landslide. Click on the icons below to learn about how and where tsunamis occur how to recognize a tsunami how to evacuate before a tsunami arrives and what geologists at the washington geological survey are doing to learn more about these natural hazards. The most common underwater causes of tsunami are earthquakes and volcanoes.
Energy accumulates in the overriding plate until it exceeds the frictional forces between the two stuck plates. The event causes a large column of water to be displaced and moved out from the. When this happens the overriding plate snaps back into an unrestrained position.
Earths crust ranges from 3 to 45 miles deep 5 to 70 kilometers. Unlike in 2004 the tsunami caused by the october 2010 earthquake did not propagate westwards and other indian ocean nations were unaffected. Block diagram of a strike slip fault.
What causes a tsunami diagram. Definition causes measures and other details with diagram. A tsunami occurs when a large body of water such as an ocean or sea experiences displacement that causes a long wavelength wave of water to reach the shore.
It was an undersea megathrust earthquake that registered a magnitude of 9193 m w reaching a mercalli intensity up to ix in certain areas.
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