READ_EXPL.f90 File Reference

Go to the source code of this file.

Functions/Subroutines
subroutine	read_expl (xipo, yipo, zipo, x1, y1, z1, x2, y2, z2, x3, y3, z3, nnod, xs, ys, zs, num_ne, sour_ne, i, dist_sour_ne, nl_expl, max_num_ne, loc_n_num, nn_loc)
	Generates explosive triangular faults.

Function/Subroutine Documentation

read_expl()

subroutine read_expl	(	real*8	xipo,
		real*8	yipo,
		real*8	zipo,
		real*8	x1,
		real*8	y1,
		real*8	z1,
		real*8	x2,
		real*8	y2,
		real*8	z2,
		real*8	x3,
		real*8	y3,
		real*8	z3,
		integer*4	nnod,
		real*8, dimension(nn_loc)	xs,
		real*8, dimension(nn_loc)	ys,
		real*8, dimension(nn_loc)	zs,
		integer*4	num_ne,
		integer*4, dimension(max_num_ne,nl_expl)	sour_ne,
		integer*4	i,
		real*8, dimension(max_num_ne,nl_expl)	dist_sour_ne,
		integer*4	nl_expl,
		integer*4	max_num_ne,
		integer*4, dimension(nn_loc)	loc_n_num,
		integer*4	nn_loc
	)

Generates explosive triangular faults.

Author

Ilario Mazzieri

Date

September, 2013

Version

1.0

Parameters

[in]	Xipo	Hipocenter x-coordinate
[in]	Yipo	Hipocenter y-coordinate
[in]	Zipo	Hipocenter z-coordinate
[in]	X1	x-coordinate of the triangular fault 1-node
[in]	Y1	y-coordinate of the triangular fault 1-node
[in]	Z1	z-coordinate of the triangular fault 1-node
[in]	X2	x-coordinate of the triangular fault 2-node
[in]	Y2	y-coordinate of the triangular fault 2-node
[in]	Z2	z-coordinate of the triangular fault 2-node
[in]	X3	x-coordinate of the triangular fault 3-node
[in]	Y3	y-coordinate of the triangular fault 3-node
[in]	Z3	z-coordinate of the triangular fault 3-node
[in]	xs	x-coord local spectral nodes
[in]	ys	y-coord local spectral nodes
[in]	zs	z-coord local spectral nodes
[in]	num_ne	number of explosive nodes
[in]	i	column index for filling sour_ne
[in]	nl_expl	number of explosive loads
[in]	nn_loc	number of local nodes
[in]	nnod	number of local nodes
[in]	loc_n_num	local node numeration
[in]	max_num_ne	max number of nodes for the specific triangular fault
[out]	sour_ne	info about explosive nodes
[out]	dist_sour_ne	distance of explosive nodes in sour_ne

Definition at line 48 of file READ_EXPL.f90.

                                                        
 
      implicit none
      
      integer*4 :: nnod,node_expl,num_ne,nl_expl,max_num_ne, nn_loc
      integer*4 :: i,isn
      
      integer*4, dimension(nn_loc) :: loc_n_num(nn_loc)
 
      integer*4, dimension(max_num_ne,nl_expl) :: sour_ne
 
      real*8 :: xipo,yipo,zipo,x1,y1,z1,x2,y2,z2,x3,y3,z3,ux,uy,uz,vx,vy,vz,tol
      real*8 :: xmax,xmin,ymax,ymin,zmax,zmin,a,b,c
      real*8 :: den
 
      real*8, dimension(nn_loc) :: xs,ys,zs
 
      real*8, dimension(max_num_ne,nl_expl) :: dist_sour_ne
 
      node_expl = 0
      tol = 5.0d0
      
      ux=(x1-x2)/sqrt((x1-x2)**2+(y1-y2)**2+(z1-z2)**2)
      uy=(y1-y2)/sqrt((x1-x2)**2+(y1-y2)**2+(z1-z2)**2)
      uz=(z1-z2)/sqrt((x1-x2)**2+(y1-y2)**2+(z1-z2)**2)
      vx=(x3-x2)/sqrt((x3-x2)**2+(y3-y2)**2+(z3-z2)**2)
      vy=(y3-y2)/sqrt((x3-x2)**2+(y3-y2)**2+(z3-z2)**2)
      vz=(z3-z2)/sqrt((x3-x2)**2+(y3-y2)**2+(z3-z2)**2)
      
      a = uy * vz - uz * vy 
      b = uz * vx - ux * vz
      c = ux * vy - uy * vx
          den = sqrt(a**2 + b**2 + c**2)
 
         !Check on the relative position of fault end points
         !In this preliminary part we check if P1 point is the lower-left fault point or not
         !If this check would fail the two points are swapped
  
         
         xmax=max(x1,x2,x3)+tol
         xmin=min(x1,x2,x3)-tol
         ymax=max(y1,y2,y3)+tol
         ymin=min(y1,y2,y3)-tol
         zmax=max(z1,z2,z3)+tol
         zmin=min(z1,z2,z3)-tol
         
 
         do isn = 1,nnod
 
            if ( dabs( a*(xs(isn)-x1) + b*(ys(isn)-y1) + c*(zs(isn)-z1)/den ).le.tol) then
                if ((xs(isn).ge.xmin).and.(xs(isn).le.xmax)) then
                      if ((ys(isn).ge.ymin).and.(ys(isn).le.ymax)) then
                        if ((zs(isn).ge.zmin).and.(zs(isn).le.zmax)) then
 
                            node_expl = node_expl + 1   
                            sour_ne(node_expl,i) = loc_n_num(isn)
                            dist_sour_ne(node_expl,i) = sqrt((xipo - xs(isn))**2 + (yipo - ys(isn))**2 + (zipo - zs(isn))**2)
                      
                        endif
                      endif
                 endif
            endif
             
         enddo
 
     
      return