forked from geodynamics/hc
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hc_invert_dtopo.c
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hc_invert_dtopo.c
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#include "hc.h"
/*
implementation of Hager & O'Connell (1981) method of solving mantle
circulation given internal density anomalies, only radially varying
viscosity, and either free-slip or plate velocity boundary
condition at surface. based on Hager & O'Connell (1981), Hager &
Clayton (1989), and Steinberger (2000). the original code is due to
Brad Hager, Rick O'Connell, and was largely modified by Bernhard
Steinberger. this version by Thorsten Becker (twb@usc.edu) for
additional comments, see hc.c
invert for compositional anomalies given geoid anomalies [m] and
residual topography wrt. to air. [m]
*/
int main(int argc, char **argv)
{
struct hcs *model; /* main structure, make sure to initialize with
zeroes */
struct sh_lms *sol_spectral=NULL, *geoid = NULL, *dtopo = NULL; /* solution expansions */
struct sh_lms *pvel=NULL; /* local plate velocity expansion */
int nsol,lmax,solved;
struct hc_parameters p[1]; /* parameters */
HC_PREC gcorr[3],dcorr[3]; /* correlations */
hc_struc_init(&model);
hc_init_parameters(p);
/*
special options for this computation
*/
p->solver_mode = HC_SOLVER_MODE_DYNTOPO_INVERT;
p->compute_geoid = 1;
p->compute_geoid_correlations = TRUE;
p->solution_mode = HC_RTRACTIONS; /* make sure to compute tractions */
/* */
p->verbose = 1;
if(argc > 2){
/* read in the reference geoid */
strcpy(p->ref_geoid_file,argv[1]);
hc_read_scalar_shexp(p->ref_geoid_file,&(p->ref_geoid),
"reference geoid",p);
/* read in the reference topography */
strcpy(p->ref_dtopo_file,argv[2]);
hc_read_scalar_shexp(p->ref_dtopo_file,&(p->ref_dtopo),
"reference dynamic topography",p);
}else{
fprintf(stderr,"%s: ERROR: need geoid.ab dtopo.ab file as arguments\n",argv[0]);
fprintf(stderr,"%s: usage:\n\n%s geoid.ab dtopo.ab\n\n",argv[0],argv[0]);
fprintf(stderr,"%s: for help, use\n\n%s geoid.ab dtopo.ab -h\n\n",argv[0],argv[0]);
exit(-1);
}
/*
handle other command line arguments
*/
hc_handle_command_line(argc,argv,3,p);
/*
begin main program part
*/
hc_init_main(model,SH_RICK,p);
nsol = (model->nradp2) * 3;
if(p->free_slip) /* maximum degree is determined by the
density expansion */
lmax = model->dens_anom[0].lmax;
else /* max degree is determined by the
plate velocities */
lmax = model->pvel.p[0].lmax; /* shouldn't be larger than that*/
sh_allocate_and_init(&pvel,2,lmax,model->sh_type,1,p->verbose,FALSE);
sh_allocate_and_init(&sol_spectral,nsol,lmax,model->sh_type,HC_VECTOR,
p->verbose,FALSE);
sh_allocate_and_init(&geoid,1,model->dens_anom[0].lmax,
model->sh_type,HC_SCALAR,p->verbose,FALSE);
if(!p->free_slip)
hc_select_pvel(p->pvel_time,&model->pvel,pvel,p->verbose);
/*
*/
solved=0;
{
/* compute solution */
hc_solve(model,p->free_slip,p->solution_mode,sol_spectral,
TRUE, /* density changed? */
(solved)?(FALSE):(TRUE), /* plate velocity changed? */
TRUE, /* viscosity changed */
FALSE,p->compute_geoid,
pvel,model->dens_anom,geoid,
p->verbose);
/* extract the top tractions */
hc_compute_dynamic_topography(model,sol_spectral,&dtopo,TRUE,p->verbose);
//sh_single_par_and_exp_to_file(dtopo,"dtopo.ab",TRUE,p->verbose);
/* geoid correlation */
hc_compute_correlation(geoid,p->ref_geoid,(gcorr),0,p->verbose); /* full correlation */
hc_compute_correlation(geoid,p->ref_geoid,(gcorr+1),1,p->verbose); /* up to 20 and 4...9 */
fprintf(stdout,"geoid full: %10.7f L=20: %10.7f \n",(double)gcorr[0],(double)gcorr[1]);
hc_compute_correlation(dtopo,p->ref_dtopo,(dcorr),0,p->verbose); /* full correlation */
hc_compute_correlation(dtopo,p->ref_dtopo,(dcorr+1),1,p->verbose); /* up to 20 and 4..9 */
fprintf(stdout,"dtopo full: %10.7f L=20: %10.7f \n",(double)dcorr[0],(double)dcorr[1]);
solved++;
}
/*
free memory
*/
sh_free_expansion(sol_spectral,nsol);
/* local copies of plate velocities */
sh_free_expansion(pvel,2);
/* */
sh_free_expansion(geoid,1);
if(p->verbose)
fprintf(stderr,"%s: done\n",argv[0]);
hc_struc_free(&model);
return 0;
}