Numerical Simulation of the Elastic Field Nearby the Source and its Data Analysis

Article Preview

Abstract:

In the source region, numerical simulation usually has a bad result. So, a two-dimension point-source FDTD simulation has been completed in this paper. By analyzing the data nearby the source, some results are gained. In the source region, for its own characteristic of FDTD, reflect waves’ reaching time doesn’t agree with its expectation in theory. But the data can be corrected by counter deduction. As an application, a level interface inversion is done by using the corrected data and a good result is obtained.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

6-10

Citation:

Online since:

June 2012

Export:

Price:

[1] Han Bo, Liu Jiaqi. A new version of the generalized pulse-spectrum technique and its applicition. Chinese journal of computation physics, 1995, 12(3): 349-354.

Google Scholar

[2] Ma Zaitian. A splitting-up method for solution of higher-order migration equation by finite-difference scheme. Geophys,1983,26(4):377-389.

Google Scholar

[3] Claerbout J F. Toward a unified theory of reflection mapping. Geophysics, 1971, 36(3): 467-581.

Google Scholar

[4] Loewenthal D, Lu L, Poberson R, and, Sherwood J W C. The wave equation applied to migration. Geophysical prospecting, 1976, 24(2): 380-390.

DOI: 10.1111/j.1365-2478.1976.tb00934.x

Google Scholar

[5] Wei Guan, Hengshan Hu. Finite-difference modeling of the electroseismic logging in a fluid-saturated porous formation. Journal of computational physics, 2008, 227(11): 5633-5648.

DOI: 10.1016/j.jcp.2008.02.001

Google Scholar

[6] Yu W, Mittra R. A new subgridding method for the FDTD algorithm. Microwave Opt. Tech. Lett. , 1999, 21(5): 330-333.

DOI: 10.1002/(sici)1098-2760(19990605)21:5<330::aid-mop7>3.0.co;2-n

Google Scholar

[7] Xiao He, Hengshan Hu and Wei Guan. Fast and slow flexural waves in a deviated borehole in homogeneous and layered anisotropic formations. Geophys. J. Int, 2010, 181(1): 417-426.

DOI: 10.1111/j.1365-246x.2010.04503.x

Google Scholar