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Reverse propagation of T waces waves from the Emperor seamount chain

The National Research Institute for Earth Science and Disaster Prevention detected the unusual vibration from the M6.8 intermediate-depth earthquake beneath northern Japan on July 24th, 2008 by Hi-sensitivity seismograph NETwork (Hi-net) and clarified that they were the T waves scattered from the Emperor seamount chain in the northern Pacific Ocean.
T waves are often observed comparatively in the shallow earthquakes just beneath the ocean and deep earthquakes in the subducting plate, but it was the first time to have observed such T waves that were scattered back from the seamount chain.This research result has been published online on the “Geophysical Research Letters” of the America Geophysical Union (AGU) website.

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※An edited version of this paper was published by AGU. Copyright(2009) American Geophysical Union.

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