MAKE_MECH_PROP_CASE_028.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_028(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, depth, zs_all,&
                            vs30, thickness, sub_tag_all                
     real*8              :: ni, vs, vp, depth_real
     real*8              :: vsini, vsfin, zini, zfin, rini, rfin
              
     rho    = 0.d0;
     lambda = 0.d0;
     mu     = 0.d0;
     gamma  = 0.d0;
     qs     = 0.d0;
     qp     = 0.d0
     
     if ((depth .ge. 0.0d0).and.(zs_all .ge. 0.0d0)) then    
                 
     ! + MATERIAL INSIDE THE BASIN 
     !! NEWER VS-RULE
              if (depth .le. 150) then
                 vs = 281.64 + (2.0000*(548.33-281.64))/(1.0000+(15.0000/(depth+0.1000))**1.2900)
                  else
                     vs = 975
                  endif 
                                                          
          vp  = 1.855 * vs
          rho = 1900 + vs / 1700 * 600          
          lambda = rho * (vp**2 - 2*vs**2)            
          mu = rho * vs**2  
          qs = 50
          gamma = (3.1415*(2/3))/qs
           
                                                  
     else
     ! + MATERIAL INSIDE THE BEDROCK - FIRST LAYER OF CRUSTAL MODEL
     ! Depth_real = zs
     
      ! generic bedrock outcrop with Vs_min = 1000 m/s and Vs30 = 1200 m/s - from Cotton et al. 2006
     if (depth .le. 1) then
     vs = 1000  
     elseif(depth .le. 30) then
     vsini = 1000
     vsfin = 1421
     zini = 1
     zfin = 30
     vs  = vsini + (vsfin-vsini)*((depth-zini)/(zfin-zini))**0.50     !VS: S velocity in m/s
     elseif(depth .le. 190) then
     vsini = 1421
     vsfin = 2217
     zini = 30
     zfin = 190
     vs  = vsini + (vsfin-vsini)*((depth-zini)/(zfin-zini))**0.50     !VS: S velocity in m/s
     elseif(depth .le. 1000) then
     vsini = 2217
     vsfin = 2600
     zini = 190
     zfin = 1000
     vs  = vsini + (vsfin-vsini)*((depth-zini)/(zfin-zini))**0.50     !VS: S velocity in m/s 
     else 
     vs = 2600
     endif  
        
      vp  =  sqrt(3.46)*vs                                             !VP: P velocity in m/s - (Poisson  = 0.3 approx) 
 
      if (depth .le. 100) then
      rini = 2200;
      rfin = 2500;
      zini = 0;
      zfin = 100;
      rho = rini + (rfin-rini)*((depth-zini)/(zfin-zini))**0.50     !RHO: MASS DENSITY in kg/m^3       
     elseif(depth .le. 1000) then
      rini = 2500;
      rfin = 2840;
      zini = 100;
      zfin = 1000;
      rho = rini + (rfin-rini)*((depth-zini)/(zfin-zini))**0.50     !RHO: MASS DENSITY in kg/m^3   
     else
     rho = 2840.0d0
     endif
         
     qs = 0.1d0*vs
     lambda = rho * (vp**2 - 2*vs**2)                   
     mu = rho * vs**2                                    
     gamma = (3.1415*(2/3))/qs   ! (Qs=Vs/10 f=0.67 Hz)
 
 
         ! generic bedrock outcrop with Vs_min = 800 m/s and Vs30 = 900 m/s - SUPERSEDED
 !        VS  = 800.0d0 + (1700.0d0-800.0d0)*(0.001d0*Depth)**0.50     !VS: S velocity in m/s
 !        VP  =  sqrt(3.46)*VS                                         !VP: P velocity in m/s - (Poisson  = 0.3 approx) 
 !        rho =  2200.0d0 + (2500.0d0-2200.0d0)*(0.001d0*Depth)**0.50  !RHO: MASS DENSITY in kg/m^3 
 !        qs = 0.1d0*VS
 !        lambda = rho * (VP**2 - 2*VS**2)                   
 !        mu = rho * VS**2                                    
 !        gamma = (3.1415*(2/3))/qs   ! (Qs=Vs/10 f=0.67 Hz)
 
     !    VS = 1700
     !    VP  = 3160
     !    rho =  2500         
     !    lambda = rho * (VP**2 - 2*VS**2)            
     !    mu = rho * VS**2  
     !    qs = 200
     !    gamma = (3.1415*(2/3))/qs  
     endif
   
     
     
     
     end subroutine make_mech_prop_case_028