Relationship Between Seismic Moment and Source Duration for Seismogenic Earthquakes in Taiwan: Implications for the Product of Static Stress Drop and the Cube of Rupture Velocity

被引：6

作者：

Hwang, Ruey-Der ^{[1
]}

Ho, Cheng-Ying ^{[2
]}

Lin, Tzu-Wei ^{[3
]}

Chang, Wen-Yen ^{[4
]}

Huang, Yi-Ling ^{[5
]}

Lin, Cai-Yi ^{[1
]}

Lin, Chiung-Yao ^{[1
]}

机构：

[1] Chinese Culture Univ, Dept Geol, Taipei, Taiwan

[2] ZhongHan Technol Co Ltd, Taipei, Taiwan

[3] Cent Weather Bur, Seismol Ctr, Taipei, Taiwan

[4] Natl Dong Hwa Univ, Dept Nat Resources & Environm Studies, Hualien, Taiwan

[5] Natl Taiwan Ocean Univ, Inst Earth Sci, Chilung, Taiwan

来源：

PURE AND APPLIED GEOPHYSICS | 2020年 / 177卷 / 07期

关键词：

Source duration; seismic moment; teleseismic P waves; rupture velocity; static stress drop; 1999; CHI-CHI; SCALING RELATIONS; SOURCE PARAMETERS; BACK-PROJECTION; SELF-SIMILARITY; JOINT INVERSION; GROUND MOTION; SLIP; FAULT; DIRECTIVITY;

D O I：

10.1007/s00024-020-02429-9

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

A systematic analysis of the source duration (tau) and seismic moment (M-0) for seismogenic earthquakes (M-W 5.5-7.1) in the Taiwan region was completed by using a teleseismic P-wave inversion method. Irrespective of the source self-similarity, the M-0-tau relationship derived in this study had a power-law form, namely M-0 proportional to tau(3), under the assumption that Delta sigma Vr3 is constant following a circular fault model (Delta sigma: static stress drop; V-r: rupture velocity). For Taiwan's earthquakes, the derived M-0-tau relationship not only provides information to predict the source duration of large earthquakes, but also probes the rupture features of seismogenic earthquakes. That is, there are different rupture patterns for earthquakes, but the product Delta sigma Vr3 remains nearly constant.

引用

页码：3191 / 3203

页数：13

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