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eigcon.f
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eigcon.f
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c
c MINEOS version 1.0 by Guy Masters, John Woodhouse, and Freeman Gilbert
c
c This program is free software; you can redistribute it and/or modify
c it under the terms of the GNU General Public License as published by
c the Free Software Foundation; either version 2 of the License, or
c (at your option) any later version.
c
c This program is distributed in the hope that it will be useful,
c but WITHOUT ANY WARRANTY; without even the implied warranty of
c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
c GNU General Public License for more details.
c
c You should have received a copy of the GNU General Public License
c along with this program; if not, write to the Free Software
c Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
c
c***************************************************************************
c
c converts eigenfunction files (output from minos_bran) into
c .eigen relation containing only info about the upper most dmax km
c ( 0 < dmax < Rn), where, RO is radius of the free surface in km.
c This version works for all modes: spheroidal, toroidal, and radial.
c
c**************************************************************************
c designed:
c changes: 15.08.91 spheroidal and toroidal modes
c parameter mnl for max no. layers in model
c variable irecl for reclength of eigfun file
c changes: 19.08.91 subroutines for sph, rad and tor modes
c latest change: 09.01.06 output is .eigen relation.
c**************************************************************************
program eigcon
implicit none
integer*4 mk
parameter (mk=350)
include "fdb/fdb_eigen.h"
c --- other variables
real*8 r(mk),pi
real*4 param(7),buf(7,mk)
real*4 bigg,tau,rhobar,con,accn
real*4 tref,rx,r1,r2,dr,dum,rn,gn,vn,wn
real*4 dmax,rmax,ww,qq,qc,tf,fl,fl1,fl3
integer*4 i,ieig,idat,iin,ifanis,ifdeck,k,j,jj,jcom,l,ll,lll
integer*4 n,nic,noc,nreg,nn,nlay,nstart,nrad,ni,nrecl
integer*4 lnblnk,ierr,iflag,ititle(20)
character*20 str
character*64 dir
character*1 typeo
character*256 fmodel,fflatin,fbinin,fout
c --
common/prm/ nn,ll,ww,qq,rn,vn,accn
equivalence (param(1),nn)
c ---
data bigg,tau,rhobar/6.6723e-11,1000.0,5515.0/
pi=4.0d0*datan(1.d0)
con=pi*bigg
nstart = 0
c
c read control parameters from stdin
c
c read jcom : flag to indicate mode type
write(*,*) '============= Program eigcon ===================='
print*,' spheroidals (3) or toroidals (2) or radial (1) or'
print*,' inner core toroidals (4) modes'
read(*,*) jcom
write(*,*) jcom
c read model file name
print*,' enter name of model file'
read(*,'(a256)')fmodel
write(*,*) fmodel(1:lnblnk(fmodel))
c read max depth for eigenvectors
print *,'enter max depth [km] : '
read(*,*) dmax
write(*,*) dmax
c read minos_bran output text file
write(*,*) ' enter name of minos_bran output text file'
read(*,'(a256)') fflatin
write(*,*) fflatin(1:lnblnk(fflatin))
c read minos_bran output binary unformatted file
write(*,*) ' minos_bran output binary unformatted file name'
read(*,'(a256)') fbinin
write(*,*) fbinin(1:lnblnk(fbinin))
c read dbase_name. There might be two form of input string:
c "path/dbase_name" or "dbase_name", where path is relative or absolute
c path to existing directory. Under path directory or working
c directory (no character(s) "/" in input string) it suppose to be created
c db relation file dbase_name.eigen, directory dbase_name.eigen.dat, and
c under dbase_name.eigen.dat binary data file eigen.
print*,
* ' enter path/dbase_name or dbase_name to store eigenfunctions:'
read(*,'(a256)')fout
write(*,*) fout(1:lnblnk(fout))
write(*,*) '===================================================='
c
c read in radial knots from model
c
iin = 7
open(iin,file=fmodel,status='old')
read(iin,101) (ititle(i),i=1,20)
101 format(20a4)
read(iin,*) ifanis,tref,ifdeck
if(ifdeck.eq.0) go to 1000
c*** card deck model ***
read(iin,*) n,nic,noc
read(iin,105) (r(i),i=1,n)
105 format(f8.0)
go to 2000
c*** polynomial model ***
1000 read(iin,*) nreg,nic,noc,rx
n=0
jj=5
if(ifanis.ne.0) jj=8
do 10 nn=1,nreg
read(iin,*) nlay,r1,r2
r1=r1*tau
r2=r2*tau
dr=(r2-r1)/float(nlay-1)
do 15 i=1,nlay
n=n+1
15 r(n)=r1+dr*float(i-1)
do 10 j=1,jj
10 read(iin,110) dum
110 format(f9.5)
2000 close(iin)
c
c rn : radius at surface
c wn : frequency normalization
c vn : velocity normalisation
c accn : acceleration normalisation
c n : index of surface grid point
c nstart : index of lowest grid point
c nrad : # of gridpoints of reduced eigenfunctions
c
rn=r(n)
gn=con*rhobar*rn
vn=sqrt(gn*rn)
wn=vn/rn
accn=1.e+20/(rhobar*rn**4)
c normalize radius
do i=1,n
r(i)=r(i)/rn
if(i.gt.1.and.dabs(r(i)-r(i-1)).lt.1.d-7) r(i)=r(i-1)
enddo
c cut radius knots lower than max depth
rmax=1.-dmax*tau/rn
j=0
do i=1,n
j=j+1
if(r(i).ge.rmax) goto 30
enddo
30 nstart=max0(j-1,1)
j=0
do i=nstart,n
j=j+1
buf(1,j)=r(i)
enddo
nrad=j
write(*,*) 'eigcon: n,nstart,nrad = ',n,nstart,nrad
c open minos_bran plane output file and search mode part
open(7,file=fflatin,form='formatted',status='old')
1 read(7,'(a)',end=9) str
ni=0
do i = 1,20
if(str(i:i).eq.'m') ni=i
enddo
if(ni.eq.0) goto 1
if(str(ni:ni+3).eq.'mode') goto 2
goto 1
9 stop 'ERR004:eigcon: Wrong minos_bran output text file'
2 read(7,'(a)') str
c open minos_bran binary unformatted file
open(8,file=fbinin,form='unformatted',status='old')
c***************************************************************
c Create .eigen relations and binary eigenfunctions file
c***************************************************************
ieig = 9
idat = 10
call null_eigen
eigid_eigen = 1
foff_eigen = 0
ncol_eigen = 3
if(jcom.eq.3) ncol_eigen = 7
npar_eigen = 7
nraw_eigen = nrad
nrecl = (ncol_eigen*nraw_eigen+npar_eigen)*4
call open_eigen(fout,ieig,idat,nrecl,dir,'w',ierr)
dir_eigen = dir
dfile_eigen = 'eigen'
c
c Main loop ----
c
200 read(8,end=99) nn,ll,ww,qq,qc,((buf(l,lll),lll=1,n),
+ l=2,ncol_eigen)
read(7,*) norder_eigen,typeo,lorder_eigen,phvel_eigen,
+ tf,per_eigen,grvel_eigen,attn_eigen
if(nn.ne.norder_eigen.or.ll.ne.lorder_eigen) then
write(*,*)
+ 'ERR001: eigcon: Input plane and binary files differ: ',
+ nn,ll,norder_eigen,lorder_eigen
stop
endif
c check that jcom corresponds to minos_bran mode
iflag = 0
if(jcom.eq.4) then
if(typeo.ne.'c') iflag = 1
typeo_eigen = 'C'
else if(jcom.eq.3)then
if(typeo.ne.'s') iflag = 1
typeo_eigen = 'S'
else if(jcom.eq.2) then
if(typeo.ne.'t') iflag = 1
typeo_eigen = 'T'
else if(jcom.eq.1) then
if(typeo.ne.'s') iflag = 1
typeo_eigen = 'S'
grvel_eigen = -1.0
else
write(*,*) 'ERR002: eigcon: Unknown jcom ',jcom
stop
endif
if(iflag.eq.1) then
write(*,*) 'ERR003: eigcon: jcom=',jcom,
+ ' does not fit mode ',typeo_eigen
stop
endif
c additional normalization V, V' or W, W' by sqrt(l(l+1))
if(typeo_eigen.eq.'S'.or.typeo_eigen.eq.'T') then
fl=ll
fl1=fl+1.0
fl3=sqrt(fl*fl1)
do i=nstart,n
do j =2,3
if(typeo_eigen.eq.'T') then
buf(j,i)=buf(j,i)/fl3
else
buf(j+2,i)=buf(j+2,i)/fl3
endif
enddo
enddo
endif
if(qq.gt.0.01) then
qq=0.5*ww/qq
else
qq = 0.0
endif
call write_eigen(ieig,ierr)
c
c Form output buffer
c
do k = 2,ncol_eigen
j=0
do i=nstart,n
j=j+1
buf(k,j)=buf(k,i)
enddo
enddo
call put_eigen(idat,npar_eigen,param,nraw_eigen,ncol_eigen,buf,
+ eigid_eigen,ierr)
eigid_eigen = eigid_eigen+1
foff_eigen = foff_eigen+nrecl
goto 200
99 close(7)
close(8)
call close_eigen(ieig,idat)
end