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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/33234

Title: 2004 Sumatra, Indonesia Mega Earthquake and Tsunami
Authors: Haekal Haridhi;Chao-Shing Lee
Contributors: 國立臺灣海洋大學:應用地球科學研究所
Date: 2011
Issue Date: 2012-11-23T01:35:54Z
Publisher: Asia Oceania Geosciences Society
Abstract: abstract:The great Sumatra earthquake Mw 9 2 in December 26th 2004 is the Number three largest earthquake that human ever record. In Sumatra subduction zone a comparison of earthquakes event occurring in this region during the 1918 - 2005 periods shows a changing in seismogenic zone. That is at or near the décollement and propagating to the surface through the upper plate. The spatial aftershocks distribution of the December 26th 2004 earthquake shows that the post-seismic motion is partitioned along two thrust faults, the lower and median thrust faults. The active N-S oceanic fracture zone of the subduction was strongly influence the aftershock event. The gravity data reveal that gravity highs with North - South or NNE - SSW trends are associated with fracture zones and seamount chains on the Indian Ocean Plate and these control the position of individual culminations on the broad flexural high at the outer margin of the Sumatra Trench. After the 2004 disaster, the France IFREMER, Japanese JAMSTEC as well as other research institutions have conducted the multi - beam detail bathymetry surveys in the northern offshore of Sumatra. The result show the features of splay and possible strike-slip faults intersect in the seafloor. The limited OBS aftershock data seems agree with the interpretation. We hope to combine the data and create a better tsunami simulation.
URI: http://ntour.ntou.edu.tw/handle/987654321/33234
Appears in Collections:[應用地球科學研究所] 演講及研討會

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