Package DATA version 8.10

Prague, December 2022
Vaclav Bucha
Department of Geophysics, Charles University Prague, Ke Karlovu 3, 121 16 Praha 2, Czech Republic
Petr Bulant
Department of Geophysics, Charles University Prague, Ke Karlovu 3, 121 16 Praha 2, Czech Republic
Ludek Klimes
Department of Geophysics, Charles University Prague, Ke Karlovu 3, 121 16 Praha 2, Czech Republic

Copyright note

This package is property of its authors, and may be used free of charge. If any result obtained with help of any part of this package is published, we appreciate citation of all papers related to the used part of this package. Refer to the references related to this package.

New in version 8.10

Contents:

Model with a lenticular inclusion (LEN)
Preliminary Reference Earth Model (PREM)
Model with homogeneous layers (ELF1, MI)
Salt dome models (SD1 and SD2)
Model with interface slitted by a curved vertical fault (SLIT)
Western Bohemia a priori model (WB2)
Model of a real geological structure (L7)
Gridded 2-D Marmousi model (MAR)
Unconformity 2-D model (U2D)
1-D model (RM)
Weakly anisotropic models (QI, QIH, QI2, QI4, QI8, SC1_I, SC1_II, KISS and ORT)
Sample synthetic 3-D model (98)
1-D anisotropic "twisted crystal" model (TC)
Simple smooth 3-D model (N2)
2-D representation of the Kummer random medium (RAN)
2-D model with a salt body (HESS)
1-D constant velocity gradient model (VGR)
SEG/EAGE Salt Model (SAL)
2-D model Pluto 1.5 (PLU)
Computation of R/T coefficients
Models of the Cotton Valley site (CV)
Model with planar interfaces (EX)
Correlation functions of random media (CORFUN)
2-D model P1I with reflection surfaces (P1, P1I)
Simple models to test the Born approximation

P-wave velocity sections Model with a lenticular inclusion (LEN)
3-D model with a lenticular inclusion is a synthetic demo model for SW3D package MODEL.
VRML and GOCAD representations and snapshots of the model
Examples with history files:
Brief description of data files for packages FORMS, MODEL, CRT, NET
Data files for packages FORMS, MODEL, CRT, NET
Related papers



Section across the model PREM, displaying the velocities Preliminary Reference Earth Model (PREM)
3-D B-spline approximation of the model PREM (Dziewonski and Anderson 1981), specified in geographical spherical coordinates.
Snapshot of the model
Examples with history files:
Guide to the input data for the complete ray tracing program.
Data files for packages FORMS, MODEL, CRT
Reference:



Sections coloured according to indices of complex blocks Model with homogeneous layers (ELF1, MI)
3-D model with four homogeneous layers separated by dipping plane interfaces.
VRML and GOCAD representations and snapshots of the model
Examples with history files and perl scripts:
Data files for packages FORMS, MODEL, CRT
Related papers



P-wave velocity sections Salt dome model (SD1) and dislocated salt dome model (SD2)
Sample 3-D synthetic models of a salt dome.
VRML and GOCAD representations and snapshots of the model
Examples with history files:
Data files for packages FORMS, MODEL
Related papers



Interface Model with interface slitted by a curved vertical fault (SLIT)
Image of the model
Data files for packages FORMS, MODEL
Related papers



P-wave velocity sections Western Bohemia a priori model (WB2)
3-D Western Bohemia a priori model prepared as a test model resembling the conditions of refraction seismic measurements performed in Western Bohemia.
VRML and GOCAD representations and snapshots of the model
Examples with history files:
Data files for packages FORMS, MODEL
Related papers



Two-point rays in model L7s Model of a real geological structure (L7)
3-D model of a real geological structure provided by Institut Francais du Petrole. Present version contains only two of seven structural interfaces.
Image of the model
VRML and GOCAD representations and snapshots of the model
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers



P-wave velocity section Gridded 2-D Marmousi model and INRIA bench-mark versions of the 2-D Marmousi model (MAR)
2-D Marmousi model is based on real geological structure (Versteeg & Grau 1991).
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers
Reference:



Model Unconformity Unconformity 2-D model (U2D)
Unconformity 2-D model with attenution by Cormier and Mellen (1984).
Image of the model
Examples with history files:
Data files for packages FORMS, MODEL, CRT, FD
Related papers
Reference:



1-D model (RM)
1-D model RM consists of a thin homogeneous low-velocity layer covering homogeneous halfspace.
Examples with history files:
Data files for packages FORMS, MODEL, CRT, RM, FD
Related papers



Rays in model QI Weakly anisotropic models (QI, QIH, QI2, QI4, QI8, SC1_I, SC1_II, KISS and ORT)
Weakly anisotropic models QI, QIH, QI2, QI4, QI8, SC1_I, SC1_II, KISS and ORT for tests of coupling ray theory and for comparison of synthetic seismograms with package ANRAY, FORT and with Fourier pseudo-spectral method.
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers



P-wave velocity sections Sample synthetic 3-D model (98)
Sample synthetic 3-D model created during the technical session of the SW3D consortium meeting in June 1998. The model is composed of three layers separated by two interfaces. A salt body in the middle layer is bounded by a spherical interface.
VRML and GOCAD representations and snapshots of the model
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers



Twisted crystal model 1-D anisotropic "twisted crystal" model (TC)
1-D anisotropic "simplified twisted crystal" and "oblique twisted crystal" models.
Examples with history files:
Data files: one-purpose Fortran codes, data for packages FORMS, MODEL, CRT and for the one-purpose codes
Description of files related to the finite-difference solution
Related papers



Simple smooth 3-D model (N2)
Simple smooth 3-D model to demonstrate network ray tracing in the paper by Klimes and Kvasnicka (1994).
Examples with history files:
Brief description of data files for packages MODEL, NET
Data files for packages MODEL, NET
Related papers
Reference:



2-D representation of the Kummer random medium (RAN)
Examples with history files:
Data files for packages FORMS, NET
Related papers



P-wave velocity section 2-D model with a salt body (HESS)
2-D model of a real geological structure with a salt body by Scott Morton of the Amerada Hess Corporation.
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers



1-D constant velocity gradient model (VGR)
1-D constant velocity gradient model by Pascal Podvin (Podvin and Lecomte 1991).
Examples with history files:
Brief description of data files for packages FORMS, CRT, NET
Data files for packages FORMS, CRT, NET
Related papers
Reference:



Interfaces coloured according to indices of surfaces SEG/EAGE Salt Model (SAL)
3-D SEG/EAGE Salt Model with features similar to those of the U.S. Gulf of Mexico salt structure (Aminzadeh et al. 1997).
VRML and GOCAD representations and snapshots of the model smoothed for ray tracing
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers
Reference:



P-wave velocity section 2-D model Pluto 1.5 (PLU)
2-D model Pluto 1.5 of a real geological structure with a salt bodies created by Smaart Joint Venture.
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers



Computation of R/T coefficients
Examples with history files:
Data files for package FORMS
Related papers



Models of the Cotton Valley site (CV)
Several models of a real structure in the Cotton Valley site based on a simultaneous inversion of the data by James Rutledge.
Examples with history files:
Data files for packages FORMS, MODEL, CRT



Reflected two-point rays Model with planar interfaces (EX)
3-D analytical model with five homogeneous layers separated by dipping plane interfaces.
Sample synthetic 3-D model created during the technical session of the SW3D consortium meeting in June 2004. The model is composed of five layers separated by three planar interfaces and one interface composed of two horizontal and two tilted planes.
VRML and GOCAD representations and snapshots of the reflected two-point rays calculated in the model
Examples with history files:
Data files for packages FORMS, MODEL, CRT



A 2-D representation of a random medium Correlation functions of random media (CORFUN)
History files to calculate different realizations of random media in terms of a white noise filtered by spectral filters enabling the random media used in geophysics to be specified (Gaussian, exponential, von Karman, self-affine, Kummer).
Examples with history files:
Data files for package FORMS
Related papers



P-wave velocity and reflected rays in model P1I 2-D model P1I with reflection surfaces (P1, P1I)
2-D model with several reflection surfaces, data provided by Stream Oil & Gas Ltd.
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers



Simple models to test the Born approximation
Three simple models for computation of 3D seismograms using the 2D ray-based Born approximation. Each model contains two homogenous isotropic layers. The models differ only by the shape of the interface between the layers. The background is a homogenous isotropic model without interfaces.
Examples with history files:
Data files for packages FORMS, MODEL, CRT
Related papers


List of error messages

References