The 17 July 2006 Java tsunami earthquake

Details The 17 July 2006 Java tsunami earthquake The 17 July 2006 Java tsunami earthquake

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3324308a&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 24, CiteID L24308

Physics

22

Geodesy And Gravity: Transient Deformation (6924, 7230, 7240), Seismology: Earthquake Source Observations (1240), Seismology: Earthquake Dynamics (1242), Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242), Seismology: Surface Waves And Free Oscillations

Scientific paper

The 17 July 2006 Java earthquake involved thrust faulting in the Java trench and excited a deadly tsunami (~5-8 m) that inundated the southern coast of Java. The earthquake's size estimates vary significantly with seismic wave period: very long-period signals (300-500+ s) indicate a seismic moment of 6.7 × 1020 Nm (Mw = 7.8), MS (~20 s) = 7.2, mb (~1 s) = 6.2, while shaking intensities (3-10 Hz) were <= MMIV. The large tsunami relative to MS characterizes this event as a tsunami earthquake. Like previous tsunami earthquakes, the Java event had an unusually low rupture speed of 1.0-1.5 km/s, and occurred near the up-dip edge of the subduction zone thrust fault. Most large aftershocks involved normal faulting. The rupture propagated ~200 km along the trench, with several pulses of shorter period seismic radiation superimposed on a smooth background rupture with an overall duration of ~185 s.

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