scholarly journals Non-linear resonant coupling of tsunami edge waves using stochastic earthquake source models

2015 ◽  
Vol 204 (2) ◽  
pp. 878-891 ◽  
Author(s):  
Eric L. Geist
Keyword(s):  
Earthquake Source ◽  
Edge Waves ◽  
Resonant Coupling ◽  
Non Linear ◽  
Source Models

Appraising the PSHA Earthquake Source Models of Japan, New Zealand, and Taiwan

2016 ◽  
Vol 87 (6) ◽  
pp. 1240-1253 ◽  
Author(s):  
Marco Pagani ◽  
Ken Xiansheng Hao ◽  
Hiroyuki Fujiwara ◽  
Matthew Gerstenberger ◽  
Kuo‐Fong Ma
Keyword(s):  
New Zealand ◽  
Earthquake Source ◽  
Source Models

Seismological Constraints on Fault-Slip Source Models and Rupture Characteristics of Global Large Earthquakes (Mw ≥ 7.5) and Associated Tsunamis

2020 ◽  
Author(s):  
Seda Yolsal-Çevikbilen ◽  
Tuncay Taymaz
Keyword(s):  
Near Field ◽  
Fault Slip ◽  
Earthquake Source ◽  
P Wave ◽  
Slip Distribution ◽  
Distribution Models ◽  
Tsunami Waves ◽  
Source Mechanisms ◽  
Source Models ◽  
Large Earthquakes

<p>Large and destructive earthquakes (M<sub>w</sub>≥ 7.5) occur worldwide particularly along the major subduction zones causing extensive damage and loss of life in the hinterland of epicentral region. Source models and rupture characteristics of these earthquakes (i.e. faulting geometry, focal depth, non-uniform finite-fault slip distributions) can be precisely determined by using seismological data and multidisciplinary earth-science observations. It is also known that earthquake source parameters play key roles in the modelling of secondary events such as earthquake-induced tsunamis. There are many studies emphasizing the importance of using heterogonous slip distribution models of earthquakes in mathematical tsunami simulations to predict synthetic tsunami waves more consistent with the observed ones. In this study, we obtained double-couple source mechanisms and slip distribution models of complex large earthquakes (M<sub>w</sub>≥ 7.5) lately occurred at different parts of the Earth. For this purpose, we used point-source teleseismic P- and SH- body waveform inversion and kinematic slip distribution inversion techniques. Besides, azimuthal distributions of P- wave first motion polarities, which are recorded by near-field and regional seismic stations, are checked to approve obtained minimum misfit source mechanism parameters of earthquakes. We essentially observed that tsunamigenic earthquakes occurred at shallow focal depths (h ≤ 70 km) with dip-slip source mechanisms and rather complex slip distributions along the fault planes. However, in some cases, tsunami waves may be unexpectedly triggered due to the secondary effects of large strike-slip earthquakes (e.g., September 28, 2018 Palu, Indonesia - M<sub>w</sub>7.5). Here, we discuss our inversion results, which reveal the significant contributions of earthquake source studies on resolving the relationships between the faulting geometry, rupture characteristics and tsunami generation. Furthermore, the necessity of high-resolution bathymetry data in numerical tsunami simulations is highlighted for the modelling of tsunami waves, in particular, recorded at the near-field tide-gauge stations. This study is partially supported by the Turkish Academy of Sciences (TÜBA) through GEBIP program.</p>

scholarly journals Commonly used earthquake source models

Geologos ◽  
2012 ◽  
Vol 18 (3) ◽  
pp. 197-209 ◽  
Author(s):  
Wenlong Liu ◽  
Yucheng Liu
Keyword(s):  
Tectonic Stress ◽  
Source Model ◽  
Theoretical Background ◽  
Earthquake Source ◽  
Focal Mechanism Solution ◽  
Dislocation Model ◽  
Earthquake Focal Mechanism ◽  
Explosive Source ◽  
Source Models ◽  
Fault Source

Abstract Several important earthquake source models that have been extensively used in seismological research and earthquake prediction are presented and discussed. A new fault source model is used to explain the earthquake focal mechanism solution and tectonic stress field, which play a crucial role in earthquake initiation and preparation. The elastodynamic-dislocation theory is demonstrated which provides the theoretical background of most earthquake source models. Important earthquake source models reviewed here include the double-force-couple point-source model, the circular-shear dislocation model, the finite moving-source model, the Brune model, and the spherical explosive source model.

Systematic comparisons of earthquake source models determined using InSAR and seismic data

2012 ◽  
Vol 532-535 ◽  
pp. 61-81 ◽  
Author(s):  
Jennifer Weston ◽  
Ana M.G. Ferreira ◽  
Gareth J. Funning
Keyword(s):  
Seismic Data ◽  
Earthquake Source ◽  
Source Models

scholarly journals Bayesian inversion for finite fault earthquake source models – II: the 2011 great Tohoku-oki, Japan earthquake

2014 ◽  
Vol 198 (2) ◽  
pp. 922-940 ◽  
Author(s):  
S. E. Minson ◽  
M. Simons ◽  
J. L. Beck ◽  
F. Ortega ◽  
J. Jiang ◽  
...  
Keyword(s):  
Earthquake Source ◽  
Bayesian Inversion ◽  
Finite Fault ◽  
Source Models
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