contents.m

基于matlab的反演程序,用于地球物理勘探中射线追踪及偏移成像程序.

% CREWES finite difference seismic modelling
% Acoustic finite difference modelling toolbox
%
% Sample scripts
% HIGHV_WEDGE ... model an anticline beneath a high velocity wedge
% VZANTICLINE ... model an anticline beneath a v(z) medium
% CHANNEL ... model a channel beneath a few layers
%
% Seismograms
% AFD_SHOTREC ... makes finite difference shot records
% AFD_EXPLODE ... makes exploding reflector models
%
% Simple Models
% CHANNELMODEL ... build a model representing a channel in a stratigraphic sequence
% WEDGEMODEL ... build a simple 2D model of a high-velocity wedge over an anticline
%
% Utilities
% AFD_VMODEL ... makes simple polygonal velocity models
% AFD_SOURCE ... generates a source array for uses with AFD_SHOTREC
% CHANGE_GRID_SPACING ... example script to interpolate a velocity model
% AFD_REFLECT ... calculate the reflectivity from a velocity model
% AFD_MOVIE ... make movies of wavefield propagation
% 
% Basic time-stepping
% AFD_SNAP ... take one finite difference time step
% AFD_SNAPN ... time steps a wavefield "n" steps
% DEL2_5PT ... compute the 5 point Laplacian
% DEL2_9PT ... compute the 9 point Laplacian
% AFD_BC_OUTER ... apply absorbing boundary condition to outer boundary
% AFD_BC_INNER ... apply absorbin bcs to inner boundary
%