Asia Pacific

How Shifting Plates Caused the Earthquake and Tsunami in Japan

Shifting plates
Shaking magnitude
Tsunami
Shifting plates and rising water

The sudden movement of the Pacific tectonic plate under the North American plate caused a massive earthquake and a tsunami.

Source: U.S. Geological Survey
Magnitude of shaking

An 8.9-magnitude earthquake struck the coast of Japan on Friday at a depth of about 17 miles below the earth's surface. Dozens of aftershocks, some of magnitude 6.0 or greater, were felt after the quake.

Source: U.S. Geological Survey
Predicted tsunami wave heights

The tsunami set off warnings for much of the Pacific basin including the west coast of the United States and South America. Officials say waves have not caused major damage in Hawaii and pose no flooding danger in California.

Source: NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory
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