MAKE_MECH_PROP_CASE_091.f90

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!    Copyright (C) 2012 The SPEED FOUNDATION
!    Author: Ilario Mazzieri
!
!    This file is part of SPEED.
!
!    SPEED is free software; you can redistribute it and/or modify it
!    under the terms of the GNU Affero General Public License as
!    published by the Free Software Foundation, either version 3 of the
!    License, or (at your option) any later version.
!
!    SPEED 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
!    Affero General Public License for more details.
!
!    You should have received a copy of the GNU Affero General Public License
!    along with SPEED.  If not, see <http://www.gnu.org/licenses/>.
 
 
 
 
     subroutine make_mech_prop_case_091(rho, lambda, mu, gamma, qs, qp, & !outputs
                                        xs, ys, zs, Depth, zs_all,&
                                        vs30, thickness, sub_tag_all)
                      
real*8, intent(out)   :: rho, lambda, mu, gamma, qs, qp
real*8, intent(in)    :: xs, ys, zs, zs_all,&
                         vs30,thickness
integer*4             :: sub_tag_all                                        
real*8, intent(inout) :: depth                                  
real*8                :: ni, vs, vp, depth_real                                                 
                      
rho    = 0.d0;
lambda = 0.d0;
mu     = 0.d0;
gamma  = 0.d0;
qs     = 0.d0;
qp     = 0.d0
 
if (depth .lt. 0.0d0) depth = 0.0d0
 
if (depth .lt. 1000.d0) then
     vs = 700.d0 + 39*(depth)**(0.5)
     vp  = vs*1.8;
     rho = 1960.d0 + 11*(depth)**(0.5) 
else
     vs = 1930.d0
     vp  = vs*1.8;
     rho = 2300.d0 
endif
 
lambda = rho * (vp**2.d0 - 2.d0*vs**2.d0);
mu = rho * vs**2;
qs = 0.1*vs;
qp = 0.1*vp;
gamma = 4.d0*datan(1.d0)/qs;
 
 
                                                     
end subroutine make_mech_prop_case_091