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The Tohoku earthquake, which struck Japan on March 11, 2011, had its seismic waves travel at varying speeds depending on the type of wave. Primary waves (P-waves) can travel at speeds of about 5 to 8 kilometers per second, while secondary waves (S-waves) travel more slowly at around 3 to 4.5 kilometers per second. After the earthquake occurred, it took only a few seconds for these seismic waves to reach nearby locations, while areas further away experienced delays of several minutes. The tsunami generated by the quake followed shortly after, impacting coastal regions within about 30 minutes.

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2mo ago

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How long did the japan tsunami last?

The Japan tsunami triggered by the 2011 Tohoku earthquake lasted for several hours, with multiple waves hitting the coastline in succession. The initial wave struck approximately 15 minutes after the earthquake, but subsequent waves continued for several hours afterward.


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The Tohoku earthquake, also known as the Great East Japan Earthquake, occurred on March 11, 2011, and the shaking lasted around 3 to 6 minutes in different regions. The earthquake had a magnitude of 9.0, making it one of the most powerful earthquakes ever recorded.


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The earthquake that struck Japan on March 11, 2011 lasted for around 6 minutes. It had a magnitude of 9.0, making it one of the most powerful earthquakes ever recorded.


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