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Article
Source parameters of the 2022 ML 6.6 Guanshan (Taiwan) earthquake determined through teleseismic P-wave inversion and rupture directivity analysis
Two closely timed moderate-sized earthquakes (e.g., the ML 6.6 Guanshan and ML 6.8 Chihshang earthquakes) occurred in eastern Taiwan on 17–18 September 2002. To understand the rupture relationship between the two...
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Article
Open AccessRadiated seismic energy from the 2021 ML 5.8 and ML 6.2 Shoufeng (Hualien), Taiwan, earthquakes and their aftershocks
We calculated radiated seismic energy (ES), seismic moment (M0), and moment magnitude (MW) and then determined the ES–ML, ES–M0, M0–ML, and MW–ML relations for the 2021 Shoufeng earthquake sequence (2.5 < ML < 6....
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Article
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
A systematic analysis of the source duration (τ) and seismic moment (M0) for seismogenic earthquakes (MW 5.5–7.1) in the Taiwan region was completed by using a teleseismic P-wave inversion method. Irrespective of...
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Article
Open AccessRupture features of the 2010 Mw 8.8 Chile earthquake extracted from surface waves
This study used the rupture directivity theory to derive the fault parameters of the 2010 Mw 8.8 Chile earthquake on the basis of the azimuth-dependent source duration obtained from the Rayleigh-wave phase vel...
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Article
Open AccessRise time and source duration of the 2008 MW 7.9 Wenchuan (China) earthquake as revealed by Rayleigh waves
The fault parameters of the 2008 Wenchuan earthquake were studied in a rupture directivity analysis by simultaneously inverting the period of the first Fourier spectral-node and the 100-s phase-delay time of t...
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Article
Lateral variations of shallow shear-velocity structure in southwestern Taiwan inferred from short-period Rayleigh waves
Short-period fundamental-mode Rayleigh waves with periods of 1.1∼5.5 sec were used to investigate the lateral variations of shallow-depth shear-wave velocity structure up to a depth of 8 km under southwestern ...
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Article
Rupture directivity and source-process time of the September 20, 1999 Chi-Chi, Taiwan, earthquake estimated from Rayleigh-wave phase velocity
Rayleigh-wave phase-delay differences between the main shock and its aftershocks, regarded as source duration varying with azimuth, at period range of 60 ∼ 120 seconds, were used to rapidly determine the ruptu...
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Article
One-dimensional dynamic simulations of slip complexity of earthquake faults
Slip complexity of earthquake faults is studied based on an N-degree-of-freedom dynamical spring-slider system in the presence of slip-law-type, velocity- and state-dependent friction. Simulation results based...
