Linearized Seismic Waveform Inversion Using Banded Triangular Preconditioners

2006 ◽  
Author(s):  
S. P. Oliveira ◽  
M. J. Porsani
Keyword(s):  
Waveform Inversion ◽  
Seismic Waveform

Efficient calculation of the steepest descent direction for source-independent seismic waveform inversion: An amplitude approach

2005 ◽  
Vol 208 (2) ◽  
pp. 455-468 ◽  
Author(s):  
Yunseok Choi ◽  
Changsoo Shin ◽  
Dong-Joo Min ◽  
Taeyoung Ha
Keyword(s):  
Waveform Inversion ◽  
Steepest Descent ◽  
Descent Direction ◽  
Seismic Waveform ◽  
Efficient Calculation

Crustal velocity structure of central Gansu Province from regional seismic waveform inversion using firework algorithm

2017 ◽  
Vol 30 (2) ◽  
pp. 81-89 ◽  
Author(s):  
Yanyang Chen ◽  
Yanbin Wang ◽  
Yuansheng Zhang
Keyword(s):  
Velocity Structure ◽  
Waveform Inversion ◽  
Gansu Province ◽  
Seismic Waveform ◽  
Crustal Velocity ◽  
Crustal Velocity Structure

Using band-tridiagonal preconditioners for 1D seismic waveform inversion

2005 ◽  
Author(s):  
Milton J. Porsani ◽  
Saulo Pomponet de Oliveira
Keyword(s):  
Waveform Inversion ◽  
Seismic Waveform

Seismic waveform inversion of gas hydrate bottom simulating reflectors

1993 ◽  
Author(s):  
T. A. Minshull ◽  
S. C. Singh
Keyword(s):  
Gas Hydrate ◽  
Waveform Inversion ◽  
Seismic Waveform ◽  
Bottom Simulating Reflectors

scholarly journals Variation patterns of landslide basal friction revealed from long-period seismic waveform inversion

2019 ◽  
Vol 100 (1) ◽  
pp. 313-327
Author(s):  
Dan Yu ◽  
Xinghui Huang ◽  
Zhengyuan Li
Keyword(s):  
Steady State ◽  
Friction Coefficient ◽  
Water Waves ◽  
Waveform Inversion ◽  
Time History ◽  
Seismic Signals ◽  
Long Period ◽  
Basal Friction ◽  
Seismic Waveform ◽  
Variation Patterns

Abstract A catastrophic landslide struck the Xiaoba village in Fuquan, Guizhou, southwestern China at about 8:30 p.m. (Beijing Time, UTC + 8) on August 27, 2014. The landslide and induced impulse water waves destroyed two villages and killed 23 persons. By reprocessing seismic signals from a seismic network deployed in the surrounding area of the landslide, we recognized the event from low-frequency seismic signals and subsequently performed a long-period seismic waveform inversion to obtain its force–time history. The inversion results reveal that the maximum force for the landslide is 5 × 109 N, and the duration of the landslide is 38.4 s. The landslide reached its maximum velocity of 12.4 m/s at 13.2 s after its initiation, and the mass center plugged into the quarry at 24.2 s. Based on the inversion results, we estimated basal friction of the landslide. We found the friction coefficient rapidly reduces to a relatively steady-state value of ~ 0.4 at a steady-state distance of 35 m and subsequently reduces in a near-linear manner that satisfies the empirical formula $$ \mu = - 1.4d + 0.44 $$μ=-1.4d+0.44, where $$ d $$d is sliding distance in km. The reduction in friction revealed by the formula is compatible with the finding of previous studies for landslides of similar volume in landslide acceleration stage. However, our result does not make it possible for the friction coefficient to increase again in landslide deceleration stage that a velocity-dependent friction law would allow. The friction variation patterns can be used to constrain input parameters in numerical landslide simulation, which can predicate runout distance and deposit areas for massive landslides to carry out landslide hazard assessment.

Robust seismic waveform inversion using back‐propagation algorithm

2007 ◽  
Author(s):  
Wookeen Chung ◽  
Taeyoung Ha ◽  
Wansoo Ha ◽  
Changsoo Shin
Keyword(s):  
Waveform Inversion ◽  
Back Propagation ◽  
Back Propagation Algorithm ◽  
Seismic Waveform ◽  
Propagation Algorithm

Application of seismic waveform inversion for time-lapse monitoring of CO2 injection: a real data example from Ketzin, Germany

2012 ◽  
Author(s):  
Fengjiao Zhang ◽  
Chritopher Juhlin ◽  
Monika Ivandic
Keyword(s):  
Waveform Inversion ◽  
Real Data ◽  
Time Lapse ◽  
Co2 Injection ◽  
Seismic Waveform
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