[PDF] Top 20 Wave-equation-based travel-time seismic tomography – Part 1: Method

... those based on the paraxial approximation and dynamic ray trac- ing ...those based on the normal mode theory ...ray-based tomography remains controversial (de Hoop and van der Hilst, 2005a; ... See full document

... P wave seismograms recorded for 10 earthquakes with magnitudes between ...P wave tomography as in this study, δt f less than ...The time steps are chosen to be 1t = 0.0025 s for P wave ... See full document

... function method is applied to seek traveling wave solutions of nonlinear partial differen- tial equations in a unified ...Wu-Zhang equation (which describes (1 + 1)-dimensional ... See full document

... (mKawahara) equation is a cubic non-linear equation with a fifth-order derivative ...the equation is suggested by Kawahara [12] with its steady ...mKawahara equation has implicit doubly ... See full document

... Bi-CGSTAB method to solve the problem. Figure 1, Figures 2 and 3 are the simulation results for wave number 20, 30 and 40 respec- ...the wave has more vibration as k ... See full document

... 106 | P a g e evaluated from (16) by using tri-diagonal solver. Then the obtained system of equations along with the system (17) gives first order ordinary differential equations. We solve the former system for by ... See full document

... (JHD) method (Kissling et al., 1994) with, simultaneously, inversion for a 1-D velocity ...S wave arrival times, as shown in Fig. 1(a) and ... See full document

... popular method for determining first arrival travel times at all points of a gridded velocity model is the shortest path method ...1976). Seismic ray paths are computed by calculating the ... See full document

... optimum method that can be used especially to visualize the dynamic behavior of physical ...numerical time step procedure to obtain the models behavior over ... See full document

... migration method based on one-way wave equations [1, 2] for Synthetic Aperture Sonar (SAS) imaging ...one-way wave equation integrates the data within a given angle and minimizes ... See full document

... decreases fastest. The inverse results can be improved further if more iterations are carried out. Figure 7 is a comparison between the exact model and three in- verse results after 1000 iterations. Every inversion ... See full document

... Nonlinear wave is one of the fundamental objects of nature and a growing interest has been given to the prop- agation of nonlinear waves in the dynamical ...solitary wave ansatz method [13] [14] is ... See full document

... Most of the acoustic experts have been investigated standard finite difference that is able to exhibit good overview of both stability and accuracy methods for the past two decades (Bording and Lines, 1997; Carcione et ... See full document

... refraction tomography (SRT) involves more complex mathematic algorithms to fit more flexible ...standard seismic refraction survey to obtain high resolu- tion ...this seismic refraction study, we ... See full document

... similar problems have been studied in [1, 4, 5, 6, 7, 8, 16, 24, 25] by using the energetic method, the Schauder fixed point theorem, Galerkin method, and the theory of charac- teristics. We refer ... See full document

... a travel time estimation method based on feature matching with historical highway trajectory data and detector ...is travel time, and explore the correlation between each feature ... See full document

... a seismic PRA to some extent has become standardized, different seismic PRA studies differ significantly in their ...Probabilistic Seismic Hazard Analysis (PSHA) which define the respective ... See full document

... This method, called also Kalman- filter formulation, has been used in some other branches of earth sciences, such as Global Positioning System ...on seismic tomography (Iyer and Hirahara, 1993), it ... See full document

... heating method; injection volumes, rates and temperatures; test du- ration; and well configurations (Wagner et ...hydraulic tomography, which utilizes pressure signals from depth-dependent pumping tests or ... See full document

... Euler's method, Runge-Kutta, ...governing equation and their own boundary ...explicit time integration analysis can be used to obtain the nodal displacements in ...liner wave propagation ... See full document