/
Mort3de.c
305 lines (243 loc) · 9.23 KB
/
Mort3de.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
/* 3-D three-components wavefield modeling using elastic wave equation in tilted ORT media.
Copyright (C) 2012 Tongji University, Shanghai, China
Authors: Jiubing Cheng and Tengfei Wang
This code is first written by Tengfei Wang at Tongji University,
and then optimzied by Jiubing Cheng for Madagascar version at BEG,
University of Texas at Austin.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <rsf.h>
/* prepared head files by myself */
#include "_fd.h"
#include "_cjb.h"
/* head files aumatically produced from *.c */
#include "ricker.h"
#include "puthead.h"
#include "zero.h"
#include "fdcoef.h"
/* wave-mode separation operators */
/* wavefield propagators */
#include "fwportelastic.h"
static int ny,nx,nz,ns;
static float dx,dy,dz,dt;
int main(int argc,char **argv)
{
int isx,isy,isz;
int i,j,k,im,jm,it;
float t;
float dt2;
float ***vp0, ***vs0, ***epsi_1, ***epsi_2, ***del_1, ***del_2, ***del_3, ***gama_1, ***gama_2;
float ***alpha, ***the, ***phi;
sf_init(argc,argv);
sf_file Fo1, Fo2, Fo3;
float f0=40; // main frequency of the wavelet(usually 30Hz)
float t0=0.04; // time delay of the wavelet(if f0=30Hz, t0=0.04s)*/
float A=1.0; // the amplitude of wavelet
clock_t t2, t3;
float timespent;
/* time samping paramter */
if (!sf_getint("ns",&ns)) ns=301;
if (!sf_getfloat("dt",&dt)) dt=0.001;
sf_warning("ns=%d dt=%f",ns,dt);
/* setup I/O files */
sf_file Fvp0, Fvs0, Fep1, Fep2, Fde1, Fde2, Fde3, Fga1, Fga2;
sf_file Falpha, Fthe, Fphi;
Fvp0 = sf_input ("in"); /* vp0 using standard input */
Fvs0 = sf_input ("vs0"); /* vs0 */
Fep1 = sf_input ("epsi1"); /* epsi */
Fep2 = sf_input ("epsi2"); /* epsi */
Fde1 = sf_input ("del1"); /* delta */
Fde2 = sf_input ("del2"); /* delta */
Fde3 = sf_input ("del3"); /* delta */
Fga1 = sf_input ("gam1"); /* gama */
Fga2 = sf_input ("gam2"); /* gama */
Falpha = sf_input ("the"); /* alpha */
Fthe = sf_input ("the"); /* theta */
Fphi = sf_input ("phi"); /* phi */
/* Read/Write axes */
sf_axis az, ax, ay;
az = sf_iaxa(Fvp0,1); nz = sf_n(az); dz = sf_d(az)*1000.0;
ax = sf_iaxa(Fvp0,2); nx = sf_n(ax); dx = sf_d(ax)*1000.0;
ay = sf_iaxa(Fvp0,3); ny = sf_n(ay); dy = sf_d(ay)*1000.0;
sf_warning("nx=%d ny=%d nz=%d ",nx,ny,nz);
sf_warning("dx=%f dy=%f dz=%f ",dx,dy,dz);
vp0=sf_floatalloc3(nz,nx,ny);
vs0=sf_floatalloc3(nz,nx,ny);
epsi_1=sf_floatalloc3(nz,nx,ny);
epsi_2=sf_floatalloc3(nz,nx,ny);
del_1=sf_floatalloc3(nz,nx,ny);
del_2=sf_floatalloc3(nz,nx,ny);
del_3=sf_floatalloc3(nz,nx,ny);
gama_1=sf_floatalloc3(nz,nx,ny);
gama_2=sf_floatalloc3(nz,nx,ny);
alpha=sf_floatalloc3(nz,nx,ny);
the=sf_floatalloc3(nz,nx,ny);
phi=sf_floatalloc3(nz,nx,ny);
/* read velocity model */
for(i=0;i<ny;i++)
for(j=0;j<nx;j++){
sf_floatread(vp0[i][j],nz,Fvp0);
sf_floatread(vs0[i][j],nz,Fvs0);
sf_floatread(epsi_1[i][j],nz,Fep1);
sf_floatread(epsi_2[i][j],nz,Fep2);
sf_floatread(del_1[i][j],nz,Fde1);
sf_floatread(del_2[i][j],nz,Fde2);
sf_floatread(del_3[i][j],nz,Fde3);
sf_floatread(gama_1[i][j],nz,Fga1);
sf_floatread(gama_2[i][j],nz,Fga2);
sf_floatread(alpha[i][j],nz,Falpha);
sf_floatread(the[i][j],nz,Fthe);
sf_floatread(phi[i][j],nz,Fphi);
for(k=0;k<nz;k++){
alpha[i][j][k] *= SF_PI/180.0;
the[i][j][k] *= SF_PI/180.0;
phi[i][j][k] *= SF_PI/180.0;
}
}
sf_warning("read velocity model parameters ok");
int mm=2*_m+1;
int mmix=2*_mix+1;
sf_warning("_m=%d _mix=%d",_m,_mix);
float *coeff_2dx,*coeff_2dy,*coeff_2dz,*coeff_1dx,*coeff_1dy,*coeff_1dz;
coeff_2dy=sf_floatalloc(mm);
coeff_2dx=sf_floatalloc(mm);
coeff_2dz=sf_floatalloc(mm);
coeff_1dy=sf_floatalloc(mmix);
coeff_1dx=sf_floatalloc(mmix);
coeff_1dz=sf_floatalloc(mmix);
coeff2d(coeff_2dx,dx);
coeff2d(coeff_2dy,dy);
coeff2d(coeff_2dz,dz);
coeff1dmix(coeff_1dx, dx);
coeff1dmix(coeff_1dy, dy);
coeff1dmix(coeff_1dz, dz);
int nxpad, nypad, nzpad;
nxpad=nx+2*_m;
nypad=ny+2*_m;
nzpad=nz+2*_m;
float*** p1=sf_floatalloc3(nzpad,nxpad,nypad);
float*** p2=sf_floatalloc3(nzpad,nxpad,nypad);
float*** p3=sf_floatalloc3(nzpad,nxpad,nypad);
zero3float(p1,nzpad,nxpad,nypad);
zero3float(p2,nzpad,nxpad,nypad);
zero3float(p3,nzpad,nxpad,nypad);
float*** q1=sf_floatalloc3(nzpad,nxpad,nypad);
float*** q2=sf_floatalloc3(nzpad,nxpad,nypad);
float*** q3=sf_floatalloc3(nzpad,nxpad,nypad);
zero3float(q1,nzpad,nxpad,nypad);
zero3float(q2,nzpad,nxpad,nypad);
zero3float(q3,nzpad,nxpad,nypad);
float*** r1=sf_floatalloc3(nzpad,nxpad,nypad);
float*** r2=sf_floatalloc3(nzpad,nxpad,nypad);
float*** r3=sf_floatalloc3(nzpad,nxpad,nypad);
zero3float(r1,nzpad,nxpad,nypad);
zero3float(r2,nzpad,nxpad,nypad);
zero3float(r3,nzpad,nxpad,nypad);
t2=clock();
/* setup I/O files */
Fo1 = sf_output("out"); /* x-component */
Fo2 = sf_output("FDElasticy"); /* y-component */
Fo3 = sf_output("FDElasticz"); /* z-component */
puthead3x(Fo1, nz, nx, ny, dz/1000.0, dx/1000.0, dy/1000.0, 0.0, 0.0, 0.0);
puthead3x(Fo2, nz, nx, ny, dz/1000.0, dx/1000.0, dy/1000.0, 0.0, 0.0, 0.0);
puthead3x(Fo3, nz, nx, ny, dz/1000.0, dx/1000.0, dy/1000.0, 0.0, 0.0, 0.0);
/*****************************************************************************
* Calculating polarization deviation operator for wave-mode separation
* ***************************************************************************/
/* source definition */
isy=nypad/2;
isx=nxpad/2;
isz=nzpad/2;
dt2=dt*dt;
/*********the kernel calculation ************/
for(it=0;it<ns;it++)
{
t=it*dt;
//sf_warning("t=%f f0=%f t0=%f A=%f",t, f0, t0, A);
//3D 45-degree force source
/*
p2[isy][isx][isz]+=Ricker(t, f0, t0, A);
q2[isy][isx][isz]+=Ricker(t, f0, t0, A);
r2[isy][isx][isz]+=Ricker(t, f0, t0, A);
*/
// 3D exploding force source
for(k=-1;k<=1;k++)
for(i=-1;i<=1;i++)
for(j=-1;j<=1;j++)
{
if(SF_ABS(k)+SF_ABS(i)+SF_ABS(j)==3)
{
p2[isy+k][isx+i][isz+j]+=k*Ricker(t, f0, t0, A);
q2[isy+k][isx+i][isz+j]+=i*Ricker(t, f0, t0, A);
r2[isy+k][isx+i][isz+j]+=j*Ricker(t, f0, t0, A);
}
}
fwportelastic(dt2,p1,p2,p3,q1,q2,q3,r1,r2,r3,
coeff_2dx,coeff_2dy,coeff_2dz,coeff_1dx,coeff_1dy,coeff_1dz,
vp0,vs0,epsi_1,del_1,gama_1,epsi_2,del_2,gama_2,del_3,alpha,the,phi,
nx,ny,nz,nxpad,nypad,nzpad,dx,dy,dz);//for ORT
if(it==ns-1) // output snapshot
{
for(i=0;i<ny;i++)
{
im=i+_m;
for(j=0;j<nx;j++)
{
jm=j+_m;
sf_floatwrite(&p3[im][jm][_m],nz,Fo1);
sf_floatwrite(&q3[im][jm][_m],nz,Fo2);
sf_floatwrite(&r3[im][jm][_m],nz,Fo3);
}
}
}
for(i=0;i<nypad;i++)
for(j=0;j<nxpad;j++)
for(k=0;k<nzpad;k++)
{
p1[i][j][k]=p2[i][j][k];
p2[i][j][k]=p3[i][j][k];
q1[i][j][k]=q2[i][j][k];
q2[i][j][k]=q3[i][j][k];
r1[i][j][k]=r2[i][j][k];
r2[i][j][k]=r3[i][j][k];
}
sf_warning("p3=%f",p3[nypad/2][nxpad/2][nzpad/2]);
sf_warning("forward propagation... it= %d",it);
}
printf("ok3\n");
t3=clock();
timespent=(float)(t3-t2)/CLOCKS_PER_SEC;
sf_warning("CPU time for 3D ORT pseudo-pure modeling: %f(second)",timespent);
free(**p1);
free(**p2);
free(**p3);
free(**q1);
free(**q2);
free(**q3);
free(**r1);
free(**r2);
free(**r3);
free(**vp0);
free(**vs0);
free(**epsi_1);
free(**del_1);
free(**gama_1);
free(**epsi_2);
free(**del_2);
free(**gama_2);
free(**del_3);
free(**alpha);
free(**the);
free(**phi);
return 0;
}