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In situobservations of earthquake-driven fluid pulses within the Japan Trench plate boundary fault zone

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Geology

Geological Society of America

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      Most cited references 31

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      ROLE OF FLUID PRESSURE IN MECHANICS OF OVERTHRUST FAULTING

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        Global Multi-Resolution Topography synthesis

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          The 2011 Tohoku-Oki earthquake: displacement reaching the trench axis.

          We detected and measured coseismic displacement caused by the 11 March 2011 Tohoku-Oki earthquake [moment magnitude (M(W)) 9.0] by using multibeam bathymetric surveys. The difference between bathymetric data acquired before and after the earthquake revealed that the displacement extended out to the axis of the Japan Trench, suggesting that the fault rupture reached the trench axis. The sea floor on the outermost landward area moved about 50 meters horizontally east-southeast and ~10 meters upward. The large horizontal displacement lifted the sea floor by up to 16 meters on the landward slope in addition to the vertical displacement.
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            Author and article information

            Journal
            Geology
            Geology
            Geological Society of America
            0091-7613
            1943-2682
            September 26 2016
            October 31 2016
            : 44
            : 10
            : 851-854
            10.1130/G38034.1
            © 2016

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