Estimate of tsunami source using optimized unit sources and including dispersion effects during tsunami propagation: The 2012 Haida Gwaii earthquake

NCUIR > College of Earth Sciences > Department of Earth Sciences > journal & Dissertation > Item 987654321/103575

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/103575

Title:	Estimate of tsunami source using optimized unit sources and including dispersion effects during tsunami propagation: The 2012 Haida Gwaii earthquake
Authors:	佐竹健治;Gusman, Aditya Riadi;Mulia, Iyan Eka;Satake, Kenji;Watada, Shingo;Heidarzadeh, Mohammad;Sheehan, Anne F.
Contributors:	地球科學學院地球科學學系
Keywords:	Amplitudes;Azimuth;Directivity;directivity of tsunami source;Dispersion;Dispersion (wave);dispersion effect;Distance;Distribution;Earthquakes;Failure;genetic algorithm;Genetic algorithms;Mass;Mathematical models;optimized source model;Propagation;Regression analysis;Sea surface;Seismic activity;Seismic data;Seismological data;submarine mass failure;Temperature (air-sea);the 2012 Haida Gwaii earthquake;Travel time;Tsunamis
Date:	2016-09-28
Issue Date:	2026-04-23 11:33:08 (UTC+8)
Publisher:	Wiley-Blackwell;Washington: American Geophysical Union (AGU)
Abstract:	摘要： AbstractWe apply a genetic algorithm to find the optimized unit sources using dispersive tsunami synthetics to estimate the tsunami source of the 2012 Haida Gwaii earthquake. The optimal number and distribution of unit sources gives the sea surface elevation similar to that from our previous slip distribution on a fault using tsunami data, but different from that using seismic data. The difference is possibly due to submarine mass failure in the source region. Dispersion effects during tsunami propagation reduce the maximum amplitudes by up to 20% of conventional linear longwave propagation model. Dispersion effects also increase tsunami travel time by approximately 1 min per 1300 km on average. The dispersion effects on amplitudes depend on the azimuth from the tsunami source reflecting the directivity of tsunami source, while the effects on travel times depend only on the distance from the source. 出版者： Washington: American Geophysical Union (AGU) 出版日期： 2016-09-28 出處： Geophysical Research Letters, 2016-09, Vol.43 (18), p.9819-9828 資源來源： Wiley Online Library Journals 版權： 2016. American Geophysical Union. All Rights Reserved. 識別號： ISSN: 0094-8276 識別號： ISSN: 1944-8007 識別號： EISSN: 1944-8007 識別號： DOI: 10.1002/2016gl070140
Appears in Collections:	[Department of Earth Sciences ] journal & Dissertation

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