中文版 | English
Title

Determination of epicenters before earthquakes utilizing far seismic and GNSS data: Insights from ground vibrations

Author
Publication Years
2020-10-01
Keywords
Language
English
URL[Source Record]
Funding Project
Ministry of Science and Technology, Taiwan[106-2116-M-194-016];Ministry of Science and Technology, Taiwan[106-2628-M-008-002];National Natural Science Foundation of China[41474038];National Natural Science Foundation of China[41774048];
Abstract
Broadband seismometers, ground-based Global Navigation Satellite Systems (GNSS), and magnetometers that were located within an epicentral distance of approximately 150 km consistently observed the novel anomalous behaviors of the common-mode ground vibrations approximately 5–10 days before the M6.6 Meinong earthquake in Taiwan. The common-mode ground vibrations with amplitudes near 0.1 m at frequencies ranging from 8 × 10 to 2 × 10 Hz were generated near the region close to the epicenter of the impending earthquake. The common-mode vibrations were consistently observed in seismic and GNSS data associated with five other earthquakes in four distinct areas. The results reveal that the common-mode vibrations could be a typical behavior before earthquakes. The causal mechanism of common-mode vibrations can be attributed to crustal resonance excitations before fault dislocations occur. Potential relationships with other pre-earthquake anomalies suggest that the common-mode vibrations could be ground motion before earthquakes, which was investigated for a significant length of time.
DOI
Source Title
Volume
12
Issue
19
Pages
1-13
Indexed By
SCI ; EI
SUSTech Authorship
Others
Scopus EID
2-s2.0-85092794130
Data Source
Scopus
WOS Accession No
WOS:000587196600001
EI Accession Number
20204309383428
EI Keywords
Earthquakes
ESI Classification Code
Seismology:484
EISSN
2072-4292
Citation statistics
Cited Times [WOS]:11
Document TypeOther
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/402798
DepartmentDepartment of Earth and Space Sciences
Affiliation
1.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan,430074,China
2.Institute of Geophysics and Geomatics,China University of Geosciences,Wuhan,430074,China
3.National Applied Research Laboratories,Taipei,10636,Taiwan
4.Department of Real Estate and Built Environment,National Taipei University,New Taipei,23741,Taiwan
5.Department of Earth and Environmental Sciences,National Chung Cheng University,Chia-Yi,62102,Taiwan
6.China Earthquake Networks Center,Beijing,100045,China
7.School of Civil Engineering,Hefei University of Technology,Hefei,230009,China
8.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,518055,China
9.Graduate Institute of Space Science,National Central University,Taoyuan,32001,Taiwan
10.Center for Space and Remote Sensing Research,National Central University,Taoyuan,32001,Taiwan
11.Center for Astronautical Physics and Engineering,National Central University,Taoyuan,32001,Taiwan
12.Institute of Earth Sciences,Academia Sinica,Taipei,11529,Taiwan
13.National Center for Research on Earthquake Engineering,Taipei,106219,Taiwan
14.Key Laboratory of Earthquake Geodesy,Institute of Seismology,China Earthquake Administration,Wuhan,430071,China
Recommended Citation
GB/T 7714
Chen,Chieh Hung,Lin,Li Ching,Yeh,Ta Kang,et al. Determination of epicenters before earthquakes utilizing far seismic and GNSS data: Insights from ground vibrations. 2020-10-01.
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