Seismic modeling and reverse-time depth migration by flux-corrected transport [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- 22 pages : digital, PDF file
- Additional Creators
- Colorado School of Mines, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- Where the Earth`s subsurface is generally inhomogeneous, lateral and vertical variation in velocity and density should be considered when doing seismic modeling and migration. Finite-difference modeling and reverse-time depth migration based on the full wave equation are approaches that take such variation into account. Here, through a change of dependent variables, the second-order acoustic wave equation is replaced by four first-order partial differential equations. The flux-corrected transport (FCT) method, commonly used in hydrodynamics for shockwave simulation, can then be used in solving these equations. The FCT method offers the opportunity to preserve a broader range of frequencies at lower computational cost than in conventional finite-difference modeling and reverse-time wave extrapolation. Moreover, it is also applicable in circumstances involving discontinuities in the wavefield, where other conventional finite-difference approaches fail. Computed two-dimensional impulse responses and synthetic data indicate that this method can accurately image positions of reflectors with greater than 90-degree dip for variable-velocity media.
- Report Numbers
- E 1.99:doe/er/14079--23
E 1.99: cwp--128
cwp--128
doe/er/14079--23 - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
01/01/1993.
"doe/er/14079--23"
" cwp--128"
"DE93006558"
Fei, Tong. - Type of Report and Period Covered Note
- Topical; 01/01/1993 - 01/01/1993
- Funding Information
- FG02-89ER14079
View MARC record | catkey: 14380129