Changes in paleostress and its magnitude related to seismic cycles in the Chelung-pu Fault, Taiwan

Yoshitaka Hashimoto, Kota Tobe, En Chao Yeh, Weiren Lin, Sheng Rong Song

研究成果: 雜誌貢獻文章

5 引文 斯高帕斯(Scopus)

摘要

Paleostress analysis was conducted through a multiple stress inversion method using slip data recoded for the core samples from the Taiwan Chelung-pu Fault Drilling Project (TCDP). Two stress fields were obtained; one of these had horizontally plunging σ1, and the other has horizontally plunging σ2 or σ3 in the compressional stress direction of the Chi-Chi earthquake. Stress magnitude for both the stress fields was constrained by stress polygons, which indicated larger SHmax for horizontally plunging σ1 than that in the case of horizontally plunging σ2 or σ3. These differences in stress orientations and stress magnitude suggest that the change in stress filed can be caused by stress drop and stress buildup associated with seismic cycles. The seismic cycles recoded in the core samples from TCDP could include many events at geological timescale and not only the 1999 Chi-Chi earthquake.

原文英語
頁(從 - 到)2418-2428
頁數11
期刊Tectonics
34
發行號12
DOIs
出版狀態已發佈 - 2015 十二月 1

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

指紋 深入研究「Changes in paleostress and its magnitude related to seismic cycles in the Chelung-pu Fault, Taiwan」主題。共同形成了獨特的指紋。

  • 引用此