Estimation of the Source Time Function Based on Blind Deconvolution with Gaussian Mixtures

Liao, Boi-Yee; Huang, Huey W.

doi:10.1007/s00024-004-2617-z

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…Another step forward for a more detailed study of the rock-fall dynamic mechanism would be to remove the propagation effects from the seismic records, using blind deconvolution methods (Liao andHuang, 2005, Sèbe et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Analysis of Rock-Fall and Rock-Fall Avalanche Seismograms in the French Alps

Deparis

Jongmans

Cotton

et al. 2008

Bulletin of the Seismological Society of America

186

233

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This study reviews seismograms from 10 rock-fall events recorded between 1992 and 2001 by the permanent seismological network Sismalp in the French Alps. A new seismic magnitude scale was defined, which allowed us to compare and classify ground-motion vibrations generated by these Alpine rock-falls. Each rock-fall has also been characterized by its ground-motion duration t 30 at an epicentral distance of 30 km. No relation was found between rock-fall parameters (fall height, runout distance, volume, potential energy) and rock-fall seismic magnitudes derived from seismogram amplitudes. On the other hand, the signal duration t 30 shows a rough correlation with the potential energy and the runout distance, highlighting the control of the propagation phase on the signal length.The signal analysis suggests the existence of at least two distinct seismic sources: one corresponding to the initial rupture associated with an elastic rebound during the detachment and the other one generated by the rock impact on the slope. Although the fall phenomenon includes other complex processes (fragmentation of the block, interaction with topography, plastic deformation during and after impact) 2D finite-element simulations of these two seismic sources are able to retrieve the main seismogram characteristics.2

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Section: Discussionmentioning

confidence: 99%

Analysis of Rock-Fall and Rock-Fall Avalanche Seismograms in the French Alps

Deparis

Jongmans

Cotton

et al. 2008

Bulletin of the Seismological Society of America

186

233

View full text Add to dashboard Cite

show abstract

“…where } { i x is the reflectivity or the Green's function, } { i h is the seismic source time function which is possibly the non-minimum phase, } { i n models the noise, and * denotes convolution. The hybrid blind deconvolution method developed by Liao and Huang [9] is applied to calculate the source time function and Green's function spontaneously from the seismic data directly. There are two major processes contained in the hybrid blind deconvolution.…”

Section: Hybrid Blind Deconvolutionmentioning

confidence: 99%

“…The generalized blind deconvolution technique offered by Liao and Huang [8] is used to eliminate the ground roll effect effectively and identify the location of reflective signal of a seismic data. Liao and Huang [9] employed the blind deconvolution by Santamaria et al [5] in conjunction with the water level algorithm to find out the directivity from the apparent source time functions and judge the actual fault plane of the earthquake. Furthermore, Liao and Huang [10] developed a hybrid blind deconvolution (HBD) and combined the GA algorithm to invert the source process of the Alaska earthquake (2002) occurred at Denali fault.…”

Section: Introductionmentioning

confidence: 99%

The Kinematic Source Process of the MW 5.9, 1999 Chia-Yi Taiwan Earthquake from Teleseismic Data Using the Hybrid Blind Deconvolution Method

Liao¹,

Xie²

2021

cea

Self Cite

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The kinematics rupture process of the Chia-Yi earthquake occurred on October 22, 1999 (Mw 5.9) in Taiwan is investigated. The hybrid blind deconvolution technique is applied to the teleseismic waves to invert source parameters, including slip amplitudes, rise times and rupture velocities on the fault. From the directivity effect of the fault, the actual fault plane is determined as east dipping. According to the derived ASFT, the total duration of the rupture process is 6.5 sec. A good correlation notices that the larger slip amplitude corresponds to the longer rise time of the subfault. By using the inverted source parameters and combining the stochastic method for finite fault, the strong ground motions of 12 stations at epicentral distances ranging from 3.28 to 29 km are simulated. The results show that the agreements between simulated and recorded spectra are quite satisfying. It means that the inverted source parameters are reliable and the stations where located at near source distance are dominated by source effects. The inhomogeneous distribution of slip and the variable corner frequency could play important roles in the simulation process. Although the source effects are dominant, there are some significant discrepancies existing at stations, implying the site effects are influential.

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Slip distribution of the 11 March 2011 Tohoku-Oki earthquake (Mw 9.0) inferred from the refined homomorphic deconvolution method

Liao

Sheu

2013

Journal of Asian Earth Sciences

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Estimation of the Source Time Function Based on Blind Deconvolution with Gaussian Mixtures

Cited by 5 publications

References 22 publications

Analysis of Rock-Fall and Rock-Fall Avalanche Seismograms in the French Alps

Analysis of Rock-Fall and Rock-Fall Avalanche Seismograms in the French Alps

The Kinematic Source Process of the MW 5.9, 1999 Chia-Yi Taiwan Earthquake from Teleseismic Data Using the Hybrid Blind Deconvolution Method

Slip distribution of the 11 March 2011 Tohoku-Oki earthquake (Mw 9.0) inferred from the refined homomorphic deconvolution method

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