Pre-seismic geomagnetic anomaly and earthquake location

NCUIR > College of Earth Sciences > Graduate Institute of Space Science > journal & Dissertation > Item 987654321/50397

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50397

Title:	Pre-seismic geomagnetic anomaly and earthquake location
Authors:	Chen,CH;Liu,JY;Lin,PY;Yen,HY;Hattori,K;Liang,WT;Chen,YI;Yeh,YH;Zeng,XP
Contributors:	太空科學研究所
Keywords:	CHI-CHI EARTHQUAKE;LOMA-PRIETA EARTHQUAKE;DEEP-SOUNDING DATA;REGIONAL EARTHQUAKES;SOURCE PARAMETERS;MAGNETIC SUSCEPTIBILITY;JANUARY-DECEMBER;FAULT-ZONE;TAIWAN;STRESS
Date:	2010
Issue Date:	2012-03-27 17:30:48 (UTC+8)
Publisher:	國立中央大學
Abstract:	Many researchers studied the relationships between appearances of geomagnetic anomalies and their distances to earthquake epicenters or faults. Yet, occasionally some magnetometer stations located nearby earthquake epicenters and/or faults do not observe geomagnetic anomalies. In this paper, a new hybrid system which simultaneously takes the hypocenter and fault plane solution into account is constructed to examine 38 earthquakes interpreted to be associated with geomagnetic anomalies during the period 1988-2001 in Taiwan. The Surface Magnetic Anomaly Reference Tip (SMART) of the new system is used instead of the epicenter or the fault to investigate statistically the distance relationship between the anomalies and the earthquake parameters. Results show that the anomalies gather along the fault and in the belt zone to the SMART. Possible mechanisms causing the anomalies in the two zones are proposed and discussed. Characteristics of the anomaly might shed some light on locations of faults before earthquake occurrences. (C) 2010 Elsevier BM. All rights reserved.
Relation:	TECTONOPHYSICS
Appears in Collections:	[Graduate Institute of Space Science] journal & Dissertation

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