A correlation between the b-value and the fractal dimension from the aftershock sequence of the 1999 Chi-Chi, Taiwan, earthquake

Chien Chih Chen; Wei Chien Wang; Young Fo Chang; Yih Min Wu; Yuan Hsi Lee

doi:10.1111/j.1365-246X.2006.03230.x

A correlation between the b-value and the fractal dimension from the aftershock sequence of the 1999 Chi-Chi, Taiwan, earthquake

Chien Chih Chen, Wei Chien Wang, Young Fo Chang, Yih Min Wu, Yuan Hsi Lee

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55 Scopus citations

Abstract

We analyse large number of aftershock events from the 1999 Chi-Chi, Taiwan, earthquake (M_L 7.3) recorded around the epicentre area of the main shock in central Taiwan where events can be precisely located, due to dense coverage of modern seismometers. The seismicity is characterized by the b-value of the Gutenberg-Richter relation and the fractal (correlation) dimension D of earthquake hypocenters calculated from sliding windows containing more than 100 events. Over a span of 6 months after the main shock, we find a positive correlation between b and D from the aftershock sequence. Our result thus suggests that Aki's relation D = 3b/c could be possibly applied to one single fracturing process and its related aftermath.

Original language	English
Pages (from-to)	1215-1219
Number of pages	5
Journal	Geophysical Journal International
Volume	167
Issue number	3
DOIs	https://doi.org/10.1111/j.1365-246X.2006.03230.x
State	Published - Dec 2006

Keywords

Aki's relation
B-value
Chi-Chi earthquake
Fractal dimension

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10.1111/j.1365-246X.2006.03230.x

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title = "A correlation between the b-value and the fractal dimension from the aftershock sequence of the 1999 Chi-Chi, Taiwan, earthquake",

abstract = "We analyse large number of aftershock events from the 1999 Chi-Chi, Taiwan, earthquake (ML 7.3) recorded around the epicentre area of the main shock in central Taiwan where events can be precisely located, due to dense coverage of modern seismometers. The seismicity is characterized by the b-value of the Gutenberg-Richter relation and the fractal (correlation) dimension D of earthquake hypocenters calculated from sliding windows containing more than 100 events. Over a span of 6 months after the main shock, we find a positive correlation between b and D from the aftershock sequence. Our result thus suggests that Aki's relation D = 3b/c could be possibly applied to one single fracturing process and its related aftermath.",

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T1 - A correlation between the b-value and the fractal dimension from the aftershock sequence of the 1999 Chi-Chi, Taiwan, earthquake

AU - Chen, Chien Chih

AU - Wang, Wei Chien

AU - Chang, Young Fo

AU - Wu, Yih Min

AU - Lee, Yuan Hsi

PY - 2006/12

Y1 - 2006/12

N2 - We analyse large number of aftershock events from the 1999 Chi-Chi, Taiwan, earthquake (ML 7.3) recorded around the epicentre area of the main shock in central Taiwan where events can be precisely located, due to dense coverage of modern seismometers. The seismicity is characterized by the b-value of the Gutenberg-Richter relation and the fractal (correlation) dimension D of earthquake hypocenters calculated from sliding windows containing more than 100 events. Over a span of 6 months after the main shock, we find a positive correlation between b and D from the aftershock sequence. Our result thus suggests that Aki's relation D = 3b/c could be possibly applied to one single fracturing process and its related aftermath.

AB - We analyse large number of aftershock events from the 1999 Chi-Chi, Taiwan, earthquake (ML 7.3) recorded around the epicentre area of the main shock in central Taiwan where events can be precisely located, due to dense coverage of modern seismometers. The seismicity is characterized by the b-value of the Gutenberg-Richter relation and the fractal (correlation) dimension D of earthquake hypocenters calculated from sliding windows containing more than 100 events. Over a span of 6 months after the main shock, we find a positive correlation between b and D from the aftershock sequence. Our result thus suggests that Aki's relation D = 3b/c could be possibly applied to one single fracturing process and its related aftermath.

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KW - B-value

KW - Chi-Chi earthquake

KW - Fractal dimension

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A correlation between the b-value and the fractal dimension from the aftershock sequence of the 1999 Chi-Chi, Taiwan, earthquake

Abstract

Keywords

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