Numerical modelling of overburden rehandling by draglines
Statement of two direct problems of numerical modeling for the simple one-pass overburden rehandling systems and the complicated multiple-pass overburden rehandling systems and one return statement of problem of numerical modeling (for the complicated double-pass systems) are presented
Numerical solving the problem of detecting of ultraweak diffractors in a complex acoustical medium
... Time Datuming (RTD) and Common Scattering Point (CSP). The first procedure (RTD) extends (synthetic) wave field from the day surface down to some level that is sufficiently close to diffractors. Then the diffractors are determined by CSP-method. The numerical model of an acoustical medium and synthetic data were obtained in Shell company. Further processing has been performed in RIAIMG of Immanuel Kant Baltic Federal University.
1. Berryhill John R. Wave-equation datuming // Geophysics. 1979. Vol. 44.P. 1329—1344....
An algorithm of wave equation datuming
... means transform the wave field at free boundary to some level below that Zone. Numerical procedure for solving this problem based on reverse time wave continuation. The new thing is that we cut of the ghost waves using characteristics. The results of numerical modeling are represented.
1. Berryhill John R. Wave-equation datuming // Geophysics. 1979. Vol. 44. P. 1329—1344.
2. Berryhill John R. Wave-equation datuming before stack // Geophysics. 1984. Vol. 49. P. 2064—2066.
3. Петрашень Г. И....
Numerical study of the problem of ultrasound tomography
... glandular tissues) and determination of sound speeds in inclusions using kinematic argument. The results of numerical simulation (2D) of the problem are presented in the paper.
Filatova V. M., Nosikova V. V.
ultrasound tomography, migration, numerical modeling
A study into the passive tracer and Lagrangian particles propagation in the coastal area of South-East Baltic
This paper studies the passive tracer and Lagrange particle propagation in the coastal area of South-East Baltic using hydrodynamic numerical modelling. The inclusion of an additional parameter, which describes the variation of the passive tracer concentration as well as its connection with the Lagrange particle random walk model, into the model made it possible to identify the features of ...
Identifying diffractors in complex acoustical media by the CSP-RTD method
... in anisotropic heterogeneous media // Geophysics. 2001. № 66 (1). Р. 294—307.
9. Baysal E., Kosloff D. D., Sherwood J. W. C. Reverse time migration // Geophysics. 1983. № 48. P. 1514—1524.
diffractor, wave field extension, numerical modeling.
An interpolation of a supervision system by RTD method
6. Collino F., Tsogka C. Application of PML absorbing layer model to the linear elastodynamic problem in anisotropic heterogeneous media // Geophysics. 2001. № 66(1). P. 294–307.
Danilin A., Erokhin G., Pestov L.
wave equation datuming, numerical modeling, RTD.