Simulation of Seismic Wave Propagation on Asteroid Ryugu Induced by The Impact Experiment of The Hayabusa2 Mission: Limited Mass Transport by Low Yield Strength of Porous Regolith

2020 ◽  
Author(s):  
G. Nishiyama ◽  
T. Kawamura ◽  
N. Namiki ◽  
B. Fernando ◽  
K. Leng ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Yield Strength ◽  
Mass Transport ◽  
Seismic Wave ◽  
Seismic Wave Propagation ◽  
Impact Experiment ◽  
Limited Mass ◽  
The Impact

Complex topography and media implementation using hp-adaptive DG-FEM for seismic wave modeling

2020 ◽  
Author(s):  
Yang Xu ◽  
Xiaofei Chen ◽  
Dechao Han ◽  
Wei Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wave Propagation ◽  
Seismic Wave ◽  
Seismic Wave Propagation ◽  
Seismic Inversion ◽  
Complex Topography ◽  
Propagation Law ◽  
The Impact ◽  
Element Method

<p>Numerical simulation of seismic wavefield is helpful to understand the propagation law of seismic wave in complex media. In addition, accurate simulation of seismic wave propagation is of great importance for seismic inversion. The discontinuous Galerkin finite element method(DG-FEM) combines the advantages of finite element method(FEM) and finite volume method(FVM) to effectively simulate the propagation characteristics of seismic waves in complex medium.</p><p>In this study, we use the hp-adaptive DG -FEM to perform accurate simulation of seismic wave propagation in complex topography and medium, and compare the results with the analytical solution of the Generalized Reflection/Transmission(GRT) coefficient method. Furthermore, ADE CFS-PML is modified and applied to DG-FEM, which greatly reduces the impact of artificial boundaries.</p>

Seismic wave propagation through surface basalts – implications for coal seismic surveys

2010 ◽  
Vol 41 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Weijia Sun ◽  
Binzhong Zhou ◽  
Peter Hatherly ◽  
Li-Yun Fu
Keyword(s):  
Wave Propagation ◽  
Seismic Wave ◽  
Seismic Wave Propagation ◽  
Seismic Surveys
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