| 1 | MODULE sedbtb |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE sedbtb *** |
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| 4 | !! Sediment : bioturbation of the solid components |
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| 5 | !!===================================================================== |
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| 6 | !! * Modules used |
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| 7 | USE sed ! sediment global variable |
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| 8 | USE sedmat ! linear system of equations |
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| 9 | USE lib_mpp ! distribued memory computing library |
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| 10 | |
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| 11 | IMPLICIT NONE |
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| 12 | PRIVATE |
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| 13 | |
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| 14 | PUBLIC sed_btb |
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| 15 | |
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| 16 | |
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| 17 | !! $Id$ |
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| 18 | CONTAINS |
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| 19 | |
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| 20 | SUBROUTINE sed_btb( kt ) |
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| 21 | !!--------------------------------------------------------------------- |
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| 22 | !! *** ROUTINE sed_btb *** |
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| 23 | !! |
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| 24 | !! ** Purpose : performs bioturbation of the solid sediment components |
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| 25 | !! |
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| 26 | !! ** Method : ``diffusion'' of solid sediment components. |
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| 27 | !! |
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| 28 | !! History : |
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| 29 | !! ! 98-08 (E. Maier-Reimer, Christoph Heinze ) Original code |
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| 30 | !! ! 04-10 (N. Emprin, M. Gehlen ) F90 |
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| 31 | !! ! 06-04 (C. Ethe) Re-organization |
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| 32 | !!---------------------------------------------------------------------- |
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| 33 | !!* Arguments |
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| 34 | INTEGER, INTENT(in) :: kt ! time step |
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| 35 | |
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| 36 | ! * local variables |
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| 37 | INTEGER :: ji, jk, js |
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| 38 | REAL(wp), DIMENSION(jpoce,jpksedm1,jpsol) :: zsol ! solution |
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| 39 | !------------------------------------------------------------------------ |
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| 40 | |
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| 41 | IF( ln_timing ) CALL timing_start('sed_btb') |
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| 42 | |
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| 43 | IF( kt == nitsed000 ) THEN |
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| 44 | IF (lwp) WRITE(numsed,*) ' sed_btb : Bioturbation ' |
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| 45 | IF (lwp) WRITE(numsed,*) ' ' |
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| 46 | ENDIF |
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| 47 | |
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| 48 | ! Initializations |
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| 49 | !---------------- |
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| 50 | zsol(:,:,:) = 0. |
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| 51 | |
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| 52 | ! right hand side of coefficient matrix |
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| 53 | !-------------------------------------- |
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| 54 | DO js = 1, jpsol |
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| 55 | DO jk = 1, jpksedm1 |
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| 56 | DO ji = 1, jpoce |
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| 57 | zsol(ji,jk,js) = solcp(ji,jk+1,js) |
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| 58 | ENDDO |
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| 59 | ENDDO |
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| 60 | ENDDO |
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| 61 | |
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| 62 | CALL sed_mat( jpsol, jpoce, jpksedm1, zsol, dtsed / 2.0 ) |
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| 63 | |
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| 64 | |
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| 65 | ! store solution of the tridiagonal system |
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| 66 | !------------------------ |
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| 67 | DO js = 1, jpsol |
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| 68 | DO jk = 1, jpksedm1 |
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| 69 | DO ji = 1, jpoce |
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| 70 | solcp(ji,jk+1,js) = zsol(ji,jk,js) |
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| 71 | ENDDO |
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| 72 | ENDDO |
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| 73 | ENDDO |
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| 74 | |
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| 75 | IF( ln_timing ) CALL timing_stop('sed_btb') |
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| 76 | |
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| 77 | END SUBROUTINE sed_btb |
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| 78 | |
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| 79 | END MODULE sedbtb |
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