English  |  正體中文  |  简体中文  |  Items with full text/Total items : 28603/40634
Visitors : 4354370      Online Users : 210
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40742

Title: Determining fault geometry from the distribution of coseismic fault slip related to the 2006 Taitung earthquake, eastern Taiwan
Authors: Nicole Béthoux
Laetitia Mozziconacci
Bertrand Delouis
Bor-Shouh Huang
Jian-Cheng Lee
Contributors: 國立臺灣海洋大學:應用地球科學研究所
Date: 2013-02
Issue Date: 2017-02-06T07:07:07Z
Publisher: Bulletin of the Seismological Society of America
Abstract: On 1 April 2006, the Taitung earthquake (Mw 6.1) occurred in Taiwan at the boundary between the Philippine Sea and Eurasian plates, where high convergence rates contributed to the development of Plio-Pleistocene orogeny in the region. From the joint inversion of seismic and geodetic data, we identified the event’s fault geometry and reconstructed the distribution of coseismic fault slip. We modeled fault geometries with increasing complexity and selected the model that best reproduced all datasets, simultaneously. Even though the earthquake magnitude was moderate, rupturing occurred in two steps. The initial rupture was generated on a listric, north–south-trending fault (for which dip decreases with increasing depth), and was immediately followed by movement along a perpendicular structure that cross-cuts the main fault at 5 km south of the earthquake hypocenter. The average slip along the rupture was 30 cm, with a maximum of 87 cm. Oblique-reverse fault movement was characterized by a predominant left-lateral component. The amount of slip is well constrained for offsets of more than 5 cm, with an associated uncertainty of 32%. For slip amounts greater than 5 cm, uncertainties on rake and rupture time are 11° and 0.54 s, respectively. The rupture propagated from the hypocenter bilaterally, moving slightly faster toward the south (2:5  0:4 km=s) than to the north (1:7  0:1 km=s). To the south, the rupture was rapidly transmitted upward at the junction with the crosscutting east–west segment, whereas in the north, the rupture remained confined to the lower segment of the main fault. From Global Positioning Systems (GPS) and seismic data (time window <1 min), we infer that the cross-cutting segment was activated following coseismic rupture on the main north–south fault, yet close enough in time to be associated with coseismic movement acquired by GPS (daily solutions).
Relation: 103(1)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40742
Appears in Collections:[應用地球科學研究所] 期刊論文

Files in This Item:

File Description SizeFormat

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback