Crustal-Scale Weak Zone along a Collisional Suture Revealed by Spatial Variations in Velocity Structures and Seismicity SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Crustal-Scale Weak Zone along a Collisional Suture Revealed by Spatial Variations in Velocity Structures and Seismicity
Author(s)
Kim, Kwang-Hee; Chen, Kou-Cheng; Chiu, Jer-Ming; Yen, Horng-Yuan
Publication Year
2012-02
Abstract
High-quality first-arrival data collected with a high-density temporary seismic array and regional seismic network were used to construct a P-wave velocity model and identify the precise location of earthquakes in the active collision zone of southeastern Taiwan. A crustal-scale weak zone, defined by high seismicity, is characterized by a steeply east-dipping lower-velocity anomaly and represents a boundary between an uplifted upper-mantle and the Luzon volcanic arc. The main features of the weak zone, with its associated low-velocity zone and seismicity pattern, vary significantly along the collisional boundary of southeastern Taiwan. Along the weak zone, unlithified sediments or highly fractured materials are compacted as the Philippine Sea plate moves toward the Eurasian plate. In areas of more advanced collision, soft material is more compacted and can therefore store significantly greater amounts of strain energy. This energy is released through episodic earthquakes.
ISSN
0037-1106
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3638
DOI
10.1785/0120110025
Bibliographic Citation
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, v.102, no.1, pp.436 - 444, 2012
Publisher
SEISMOLOGICAL SOC AMER
Subject
ARC-CONTINENT COLLISION; CENTRAL EASTERN TAIWAN; CENTRAL UNITED-STATES; UPPER-MANTLE BENEATH; LICHI MELANGE; V-P; EARTHQUAKE; EVOLUTION; MODELS; CALIFORNIA
Type
Article
Language
English
Document Type
Article
Publisher
SEISMOLOGICAL SOC AMER
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