ULTRASONIC WAVE FIELD MODELING IN A CONICAL SCANNING PROBE TIP

2011 ◽  
Author(s):  
Arthur Every ◽  
Ingo Wenke ◽  
Laurent Aebi ◽  
Jurg Dual ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Wave Field ◽  
Ultrasonic Wave ◽  
Scanning Probe ◽  
Field Modeling

Ultrasonic Wave Field Transport by Conduction Electrons in Indium

1984 ◽  
Vol 121 (1) ◽  
pp. 433-440 ◽  
Author(s):  
V. V. Gudkov ◽  
V. D. Fil
Keyword(s):  
Wave Field ◽  
Ultrasonic Wave ◽  
Conduction Electrons

MPI‐based seismic wave field modeling in 3‐D viscoelastic random cavity medium

2010 ◽  
Author(s):  
Yong Yun‐dong ◽  
Wang Xi‐wen ◽  
Wang Yu‐chao ◽  
Hu Zi‐Duo ◽  
Wang En‐Li
Keyword(s):  
Wave Field ◽  
Seismic Wave ◽  
Field Modeling ◽  
Seismic Wave Field

scholarly journals Element-by-element parallel spectral-element methods for 3-D teleseismic wave modeling

Solid Earth ◽  
2017 ◽  
Vol 8 (5) ◽  
pp. 969-986 ◽  
Author(s):  
Shaolin Liu ◽  
Dinghui Yang ◽  
Xingpeng Dong ◽  
Qiancheng Liu ◽  
Yongchang Zheng
Keyword(s):  
Boundary Condition ◽  
Wave Field ◽  
Scattered Wave ◽  
Spectral Element ◽  
Perfectly Matched Layers ◽  
Time Step ◽  
Absorbing Boundary ◽  
Field Modeling ◽  
Adjoint Tomography ◽  
Gradient Calculation

Abstract. The development of an efficient algorithm for teleseismic wave field modeling is valuable for calculating the gradients of the misfit function (termed misfit gradients) or Fréchet derivatives when the teleseismic waveform is used for adjoint tomography. Here, we introduce an element-by-element parallel spectral-element method (EBE-SEM) for the efficient modeling of teleseismic wave field propagation in a reduced geology model. Under the plane-wave assumption, the frequency–wavenumber (FK) technique is implemented to compute the boundary wave field used to construct the boundary condition of the teleseismic wave incidence. To reduce the memory required for the storage of the boundary wave field for the incidence boundary condition, a strategy is introduced to efficiently store the boundary wave field on the model boundary. The perfectly matched layers absorbing boundary condition (PML ABC) is formulated using the EBE-SEM to absorb the scattered wave field from the model interior. The misfit gradient can easily be constructed in each time step during the calculation of the adjoint wave field. Three synthetic examples demonstrate the validity of the EBE-SEM for use in teleseismic wave field modeling and the misfit gradient calculation.

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