Title

Late Holocene paleoearthquake activity in the middle part of the Longitudinal Valley fault, eastern Taiwan

Authors

Wen-Shan Chen, National Taiwan University
I-Chin Yen, National Taiwan University
Keegan P. Fengler, Central Washington University
Charles M. Rubin, Central Washington University
Chi-Cheng Yang, National Taiwan University
Hsiao-Chin Yang, National Taiwan University
Hui-Cheng Chang, Central Geological Survey, Taiwan
Chii-Wen Lin, Central Geological Survey, Taiwan
Wei-Hsiung Lin, Central Geological Survey, Taiwan
Yen-Chiu Liu, Central Geological Survey, Taiwan
Yen-Hui Lin, Central Geological Survey, Taiwan

Document Type

Article

Department or Administrative Unit

Geological Sciences

Publication Date

12-2007

Abstract

The Longitudinal Valley fault in eastern Taiwan is the most important arc–continent collisional boundary fault between the Philippine Sea plate and the Eurasian continent. The 50% amount of collisional deformation partitioned on the fault has considered implications for seismic hazard. Our paleoseismological work on the middle segment (the Juisui fault) of the Longitudinal Valley fault has shown that the fault occurred intensive seismicity of four paleoearthquakes of 1951 AD, P2 event < 260 cal yr BP, 150 < P3 event < 290–440 cal yr BP, and 500 < P4 event < 640 cal yr BP during the past 700 yr. It indicates a relatively short recurrence interval of about 170–210 yr. In addition to analysis the behavior of the Juisui fault using GPS and paleoseismic data, they suggest that the decreasing GPS velocities on the hanging wall reflect strain accumulation as a result of the locking at a shallow depth, and the great earthquake often produced a visible surficial rupture of more than 0.65-m-high vertical displacements. It is clearly different from the southern segment of the Chihshang fault which creeping is prevalent during interseismic periods.

Comments

This article was originally published in Earth and Planetary Science Letters. The full-text article from the publisher can be found here.

Due to copyright restrictions, this article is not available for free download from ScholarWorks @ CWU.

Recommended Citation

Chen, W., Yen, I., Fengler, K., Rubin, C., Yang, C., Yang, H., Chang, H., Lin, C., Lin, W., & Liu, Y. (2007). Late Holocene paleoearthquake activity in the middle part of the Longitudinal Valley fault, eastern Taiwan. Earth and Planetary Science Letters, 264(3–4), 420–437. https://doi.org/10.1016/j.epsl.2007.09.043

Journal

Earth and Planetary Science Letters

Rights

Published by Elsevier B.V.