Deep Fault Plane Revealed by High-Precision Locations of Early Aftershocks Following the 12 September 2016 M-L 5.8 Gyeongju, Korea, Earthquake SCIE SCOPUS

Cited 13 time in WEB OF SCIENCE Cited 12 time in Scopus
Title
Deep Fault Plane Revealed by High-Precision Locations of Early Aftershocks Following the 12 September 2016 M-L 5.8 Gyeongju, Korea, Earthquake
Author(s)
Kim, Kwang-Hee; Kim, Jeongmu; Han, Minhui; Kang, Su Young; Son, Moon; Kang, Tae-Seob; Rhie, Junkee; Kim, YoungHee; Park, Yongcheol; Kim, Han-Joon; You, Qingyu; Hao, Tianyao
KIOST Author(s)
Kim, Han Joon(김한준)
Publication Year
2018-02
Abstract
An M-L 5.8 earthquake, which is large for a stable continental region, occurred in southeastern Korea on 12 September 2016. Ten days of data from a temporary seismic network deployed immediately after the mainshock are combined with data from permanent seismic stations to determine high-precision locations of early aftershocks to reveal the geometry of the causative structure at depth. Well-constrained relative earthquake hypocenters and focal mechanisms are used to define the subsurface fault plane with a strike of similar to N28 degrees E and dip of similar to 78 degrees to the east-southeast. This fault plane extends from 12 to 15 km depth and may have been responsible for most of the early earthquakes in the Gyeongju earthquake sequence. A pre-existing weak zone in a strike-slip duplex that formed from subsidiary Riedel shears beneath the Yangsan fault system may have been reactivated to nucleate the mainshock and aftershocks.
ISSN
0037-1106
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1021
DOI
10.1785/0120170104
Bibliographic Citation
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA, v.108, no.1, pp.517 - 523, 2018
Publisher
SEISMOLOGICAL SOC AMER
Subject
FOCAL MECHANISMS; SOUTH-KOREA; REACTIVATION; TECTONICS; PENINSULA; ODAESAN; ZONES
Type
Article
Language
English
Document Type
Article
Publisher
SEISMOLOGICAL SOC AMER
Related Researcher
Research Interests

Marine Geophysics,Marine Active Fault Study,Exploration Seismology,해양지구물리,해저단층연구,탄성파탐사

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