The El Salvador and Philippines Tsunamis of August 2012: Insights from Sea Level Data Analysis and Numerical Modeling

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Title:	The El Salvador and Philippines Tsunamis of August 2012: Insights from Sea Level Data Analysis and Numerical Modeling
Authors:	佐竹健治;Heidarzadeh, Mohammad;Satake, Kenji
Contributors:	地球科學學院地球科學學系
Keywords:	Earth and Environmental Science;Earth Sciences;Earthquakes;El Salvador;Fault lines;Faults;Fourier analysis;Geophysics/Geodesy;Islands;Marine;Mathematical models;Philippines;Sea level;Seismic activity;Stations;Tsunamis;Wave height
Date:	2014-12-02
Issue Date:	2026-04-23 11:48:25 (UTC+8)
Publisher:	Birkhauser Verlag Basel;Basel: Springer Science and Business Media LLC
Abstract:	摘要： We studied two tsunamis from 2012, one generated by the El Salvador earthquake of 27 August (Mw 7.3) and the other generated by the Philippines earthquake of 31 August (Mw 7.6), using sea level data analysis and numerical modeling. For the El Salvador tsunami, the largest wave height was observed in Baltra, Galapagos Islands (71.1 cm) located about 1,400 km away from the source. The tsunami governing periods were around 9 and 19 min. Numerical modeling indicated that most of the tsunami energy was directed towards the Galapagos Islands, explaining the relatively large wave height there. For the Philippines tsunami, the maximum wave height of 30.5 cm was observed at Kushimoto in Japan located about 2,700 km away from the source. The tsunami governing periods were around 8, 12 and 29 min. Numerical modeling showed that a significant part of the far-field tsunami energy was directed towards the southern coast of Japan. Fourier and wavelet analyses as well as numerical modeling suggested that the dominant period of the first wave at stations normal to the fault strike is related to the fault width, while the period of the first wave at stations in the direction of fault strike is representative of the fault length. 其他題名： Pure Appl. Geophys 出版者： Basel: Springer Science and Business Media LLC 出版日期： 2014-12-01 出處： Pure and Applied Geophysics, 2014-12, Vol.171 (12), p.3437-3455 資源來源： Agricultural & Environmental Science Collection 版權： Springer Basel 2014 識別號： ISSN: 0033-4553 識別號： EISSN: 1420-9136 識別號： DOI: 10.1007/s00024-014-0790-2
Appears in Collections:	[Department of Earth Sciences ] journal & Dissertation

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