SYNOPSIS

PERL PROGRAM NAME:

AUTHOR: Juan Lorenzo (Perl module only)

DATE:

DESCRIPTION:

Version:

USE

NOTES

Examples

SYNOPSIS

SEISMIC UNIX NOTES ELAMODEL - make piecewise homogeneous anisotropic model

elamodel >modelfile fill= [optional parameters]   			



Input Parameters: 							

xmin=0.0               minimum horizontal coordinate (x) 		

xmax=1.0               maximum horizontal coordinate (x) 		

zmin=0.0               minimum vertical coordinate (z) 		

zmax=1.0               maximum vertical coordinate (z) 		

xedge=                 x coordinates of an edge 			

zedge=                 z coordinates of an edge 			

kedge=                 array of indices used to identify edges 	

fill=    iso      	 x,z,v_p,v_s,rho   				

         tiso      	 x,z,v_p,v_s,epsilon,delta,gamma,phi,rho	

         ani           x,z,a1111,a3333,a1133,a1313,a1113,a3313        

                           a1212,a2323,a1223,rho                      

maxangle=5.0           maximum angle (deg) between adjacent edge segments 



Notes: 								

More than set of xedge and zedge parameters may be 		        

specified, but the numbers of these parameters must be equal. 	



Within each set, vertices will be connected by fixed edges. 		



Edge indices in the k array are used to identify edges 		

specified by the x and z parameters.  The first k index 		

corresponds to the first set of x and z parameters, the 		

second k index corresponds to the second set, and so on. 		



After all vertices have been inserted into the model,	the fill        

parameters is used to fill closed regions bounded by fixed edges.     

Three input modes are available:                                      

Isotropic blocks:     x,z,v_p,v_s,rho                                 

Transversely iso:     x,z,v_p,v_s,epsilon,delta,gamma,phi,rho         

General 2D aniso:     x,z,a1111,a3333,a1133,a1313,a1113,a3313         

                      a1212,a2323,a1223,rho                           

Hereby:  

x,z			   coordinates of one point in a bounded region 

v_p,v_s		   P, S-wave velocity along symmetry axis       

epsilon, delta, gammma   Thomsen's parameters              

rho 			   density 			     

phi			   angle of symmetry axes with vertical 

aijkl			   density normalized stiffness coefficients 



Each block can be defined by different input modes. The number of     

input parameters defines the input type. Incorrect number of input    

parameters result in an Error-message					

Author: Dave Hale, Colorado School of Mines, 02/12/91

modified : Andreas Rueger, Colorado School of Mines, 01/18/94

built anisotropic models

User's notes (Juan Lorenzo) untested

CHANGES and their DATES

Import packages

instantiation of packages

Encapsulated hash of private variables

sub Step

collects switches and assembles bash instructions by adding the program name

sub note

collects switches and assembles bash instructions by adding the program name

sub clear

sub fill

sub kedge

sub maxangle

sub xedge

sub xmax

sub xmin

sub zedge

sub zmax

sub zmin

sub get_max_index

max index = number of input variables -1

cpanm App::SeismicUnixGui

perl -MCPAN -e shell
install App::SeismicUnixGui