Fast and accurate 3-D ray tracing using bilinear traveltime interpolation and the wave front group marching
نویسندگان
چکیده
منابع مشابه
3-D traveltime computation using the fast marching method
We present a fast algorithm for solving the eikonal equation in three dimensions, based on the fast marching method. The algorithm is of the order O(N log N), where N is the total number of grid points in the computational domain. The algorithm can be used in any orthogonal coordinate system and globally constructs the solution to the eikonal equation for each point in the coordinate domain. Th...
متن کامل3-D traveltime computation using Huygens wavefront tracing
Traveltime computation is widely used in seismic modeling, imaging, and velocity analysis. The two most commonly used methods are ray tracing and numerical solutions to the eikonal equation. Eikonal solvers are fast and robust but are limited to computing only the firstarrival traveltimes. Ray tracing can compute multiple arrivals but lacks the robustness of eikonal solvers. We propose a robust...
متن کاملImproving global shear wave traveltime tomography using three-dimensional ray tracing and iterative inversion
S. Widiyantoro,1 A. Gorbatov,2 B. L. N. Kennett3 and Y. Fukao2 1Department of Geophysics and Meteorology, Bandung Institute of T echnology, Jl. Ganesha 10, Bandung 40132, Indonesia. E-mail: [email protected] 2Earthquake Research Institute, University of T okyo, Yayoi 1-1-1, Bunkyo-ku, T okyo 113, Japan 3Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, ...
متن کامل3-D traveltime computation by Huygens wavefront tracing
In this paper, I present a 3-D implementation of Huygens wavefront tracing. The threedimensional version of the method retains the characteristics of the two-dimensional one: stability, accuracy, and efficiency. The major difficulty of the 3-D extension is related to the handling of triplications. An easy to implement solution is to approximate the wavefronts at the triplications as planes orth...
متن کاملWave front evolution in strongly heterogeneous layered media using the fast marching method
S U M M A R Y The fast marching method (FMM) is a grid based numerical scheme for tracking the evolution of monotonically advancing interfaces via finite-difference solution of the eikonal equation. Like many other grid based techniques, FMM is only capable of finding the first-arriving phase in continuous media; however, it distinguishes itself by combining both unconditional stability and rap...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2011
ISSN: 0956-540X
DOI: 10.1111/j.1365-246x.2010.04909.x