6 Detecting the 2011 M 9 . 0 Tohoku Earthquake with Moment Tensors

نویسنده

  • Douglas S. Dreger
چکیده

The M9 Tohoku earthquake offshore Japan that occurred on May 11, 2011 triggered strong local and regional shaking as well as a large-scale tsunami that caused major damage in both the nearand far-field. The Japanese earthquake and tsunami warning systems were able to detect and locate the earthquake; however information regarding the focal mechanism of the event was unknown until the moment tensor from the W-phase was published about 20 minutes after the event. Because of the dense Japanese seismic network of strong-motion stations (K-NET), this event gives us the opportunity to test the approach proposed by Guilhem and Dreger, 2011 to rapidly detect, locate, and obtain the moment magnitude and mechanism of megathrust earthquakes.

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تاریخ انتشار 2011