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      Three-Dimensional Splay Fault Geometry and Implications for Tsunami Generation

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      Science

      American Association for the Advancement of Science (AAAS)

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          Most cited references 12

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          Source mechanisms and tectonic significance of historical earthquakes along the nankai trough, Japan

           Masataka Ando (1975)
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            The great Sumatra-Andaman earthquake of 26 December 2004.

            The two largest earthquakes of the past 40 years ruptured a 1600-kilometer-long portion of the fault boundary between the Indo-Australian and southeastern Eurasian plates on 26 December 2004 [seismic moment magnitude (Mw) = 9.1 to 9.3] and 28 March 2005 (Mw = 8.6). The first event generated a tsunami that caused more than 283,000 deaths. Fault slip of up to 15 meters occurred near Banda Aceh, Sumatra, but to the north, along the Nicobar and Andaman Islands, rapid slip was much smaller. Tsunami and geodetic observations indicate that additional slow slip occurred in the north over a time scale of 50 minutes or longer.
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              Splay Fault Branching Along the Nankai Subduction Zone

               J.-O. Park (2002)
              Seismic reflection profiles reveal steeply landward-dipping splay faults in the rupture area of the magnitude (M) 8.1 Tonankai earthquake in the Nankai subduction zone. These splay faults branch upward from the plate-boundary interface (that is, the subduction zone) at a depth of approximately 10 kilometers, approximately 50 to 55 kilometers landward of the trough axis, breaking through the upper crustal plate. Slip on the active splay fault may be an important mechanism that accommodates the elastic strain caused by relative plate motion.
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                Author and article information

                Journal
                Science
                Science
                American Association for the Advancement of Science (AAAS)
                0036-8075
                1095-9203
                November 16 2007
                November 16 2007
                : 318
                : 5853
                : 1128-1131
                Article
                10.1126/science.1147195
                © 2007

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