Analysis of Coseismic Fault Slip Models of the 2012 Indian Ocean Earthquake: Importance of GPS Data for Crustal Deformation Studies
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- 作者：Endra Gunawan ; Putra Maulida ; Irwan Meilano ; Masyhur Irsyam ; Joni Efendi
- 关键词：Key wordsthe 2012 Indian Ocean earthquake ; coseismic deformation ; GPS displacement
- 刊名：Acta Geophysica
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：64
- 期：6
- 页码：2136-2150
- 全文大小：
- 刊物主题：Geophysics/Geodesy; Structural Geology; Geotechnical Engineering & Applied Earth Sciences;
- 出版者：Springer International Publishing
- ISSN：1895-7455
- 卷排序：64
文摘
Based on continuous GPS data, we analyze coseismic deformation due to the 2012 Indian Ocean earthquake. We use the available coseismic slip models of the 2012 earthquake, derived from geodetic and/or seismic waveform inversion, to calculate the coseismic displacements in the Andaman-Nicobar, Sumatra and Java. In our analysis, we employ a spherical, layered model of the Earth and we find that Java Island experienced coseismic displacements up to 8 mm, as also observed by our GPS network. Compared to coseismic offsets measured from GPS data, a coseismic slip model derived from multiple observations produced better results than a model based on a single type of observation.