3D multivalued travel time and amplitude maps

被引：34

作者：

Lucio, PS ^{[1
]}

Lambare, G ^{[1
]}

Hanyga, A ^{[1
]}

机构：

[1] UNIV BERGEN,INST SOLID EARTH PHYS,N-5007 BERGEN,NORWAY

来源：

PURE AND APPLIED GEOPHYSICS | 1996年 / 148卷 / 3-4期

关键词：

3D ray tracing; travel time; amplitude; Hamiltonian; Lagrangian manifold; 3D Overthrust model;

D O I：

10.1007/BF00874575

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

An algorithm for computing multivalued maps for travel time, amplitude and any other ray related variable in 3D smooth velocity models is presented. It is based on the construction of successive isochrons by tracing a uniformly dense discrete set of rays by fixed travel-time steps. Ray tracing is based on Hamiltonian formulation and includes computation of paraxial matrices. A ray density criterion ensures uniform ray density along isochrons over the entire ray field including caustics. Applications to complex models are shown.

引用

页码：449 / 479

页数：31

共 29 条

[1]

Aki K., 1980, QUANTITATIVE SEISMOL, VII

[2]

AMINZADEH F, 1995, LEADING EDGE, V14, P125, DOI DOI 10.1190/1.1437102

[3]

Aminzadeh F., 1994, The Leading Edge, V13, P949

[4]

AMINZADEH F, 1994, LEADING EDGE, V13, P110

[5]

CHAPMAN CH, 1985, J GEOPHYS-Z GEOPHYS, V58, P27

[6]

de Boor C., 1978, PRACTICAL GUIDE SPLI, DOI DOI 10.1007/978-1-4612-6333-3

[7]

ETTRICH N, 1995, 57 ANN EAEG M GLASG

[8]

FARIN G, 1990, CURVES SURFACES COMP

[9] SEISMIC WAVE-FORM MODELING IN HETEROGENEOUS MEDIA BY RAY PERTURBATION-THEORY [J].

FARRA, V ;

MADARIAGA, R .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1987, 92 (B3) :2697-2712

[10] RAY-TRACING IN COMPLEX MEDIA [J].

FARRA, V .

JOURNAL OF APPLIED GEOPHYSICS, 1993, 30 (1-2) :55-73

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