1 | MODULE sbctide |
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2 | !!====================================================================== |
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3 | !! *** MODULE sbctide *** |
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4 | !! Initialization of tidal forcing |
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5 | !!====================================================================== |
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6 | !! History : 9.0 ! 2007 (O. Le Galloudec) Original code |
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7 | !!---------------------------------------------------------------------- |
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8 | USE oce ! ocean dynamics and tracers variables |
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9 | USE dom_oce ! ocean space and time domain |
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10 | USE phycst ! physical constant |
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11 | USE daymod ! calandar |
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12 | USE tideini ! |
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13 | ! |
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14 | USE in_out_manager ! I/O units |
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15 | USE iom ! xIOs server |
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16 | USE ioipsl ! NetCDF IPSL library |
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17 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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18 | |
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19 | IMPLICIT NONE |
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20 | PUBLIC |
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21 | |
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22 | REAL(wp), PUBLIC, ALLOCATABLE, DIMENSION(:,:) :: pot_astro ! |
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23 | |
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24 | !!---------------------------------------------------------------------- |
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25 | !! tidal potential |
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26 | !!---------------------------------------------------------------------- |
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27 | !! sbc_tide : |
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28 | !! tide_init_potential : |
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29 | !!---------------------------------------------------------------------- |
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30 | |
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31 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: amp_pot, phi_pot |
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32 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: amp_load, phi_load |
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33 | |
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34 | !!---------------------------------------------------------------------- |
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35 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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36 | !! $Id$ |
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37 | !! Software governed by the CeCILL license (see ./LICENSE) |
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38 | !!---------------------------------------------------------------------- |
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39 | CONTAINS |
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40 | |
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41 | SUBROUTINE sbc_tide( kt ) |
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42 | !!---------------------------------------------------------------------- |
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43 | !! *** ROUTINE sbc_tide *** |
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44 | !!---------------------------------------------------------------------- |
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45 | INTEGER, INTENT( in ) :: kt ! ocean time-step |
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46 | INTEGER :: jk ! dummy loop index |
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47 | INTEGER :: nsec_day_orig ! Temporary variable |
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48 | !!---------------------------------------------------------------------- |
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49 | |
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50 | IF( nsec_day == NINT(0.5_wp * rdt) .OR. kt == nit000 ) THEN ! start a new day |
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51 | ! |
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52 | IF( kt == nit000 )THEN |
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53 | ALLOCATE( amp_pot(jpi,jpj,nb_harmo), & |
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54 | & phi_pot(jpi,jpj,nb_harmo), pot_astro(jpi,jpj) ) |
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55 | IF( ln_read_load )THEN |
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56 | ALLOCATE( amp_load(jpi,jpj,nb_harmo), phi_load(jpi,jpj,nb_harmo) ) |
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57 | CALL tide_init_load |
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58 | ENDIF |
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59 | ENDIF |
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60 | ! |
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61 | IF( ln_read_load )THEN |
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62 | amp_pot(:,:,:) = amp_load(:,:,:) |
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63 | phi_pot(:,:,:) = phi_load(:,:,:) |
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64 | ELSE |
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65 | amp_pot(:,:,:) = 0._wp |
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66 | phi_pot(:,:,:) = 0._wp |
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67 | ENDIF |
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68 | pot_astro(:,:) = 0._wp |
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69 | ! |
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70 | ! If the run does not start from midnight then need to initialise tides |
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71 | ! at the start of the current day (only occurs when kt==nit000) |
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72 | ! Temporarily set nsec_day to beginning of day. |
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73 | nsec_day_orig = nsec_day |
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74 | IF ( nsec_day /= NINT(0.5_wp * rdt) ) THEN |
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75 | kt_tide = kt - (nsec_day - 0.5_wp * rdt)/rdt |
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76 | nsec_day = NINT(0.5_wp * rdt) |
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77 | ELSE |
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78 | kt_tide = kt |
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79 | ENDIF |
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80 | CALL tide_harmo( omega_tide, v0tide, utide, ftide, ntide, nb_harmo ) |
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81 | ! |
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82 | ! |
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83 | IF(lwp) THEN |
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84 | WRITE(numout,*) |
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85 | WRITE(numout,*) 'sbc_tide : Update of the components and (re)Init. the potential at kt=', kt |
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86 | WRITE(numout,*) '~~~~~~~~ ' |
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87 | DO jk = 1, nb_harmo |
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88 | WRITE(numout,*) Wave(ntide(jk))%cname_tide, utide(jk), ftide(jk), v0tide(jk), omega_tide(jk) |
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89 | END DO |
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90 | ENDIF |
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91 | ! |
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92 | IF( ln_tide_pot ) CALL tide_init_potential |
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93 | ! |
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94 | ! Reset nsec_day |
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95 | nsec_day = nsec_day_orig |
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96 | ENDIF |
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97 | ! |
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98 | END SUBROUTINE sbc_tide |
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99 | |
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100 | |
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101 | SUBROUTINE tide_init_potential |
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102 | !!---------------------------------------------------------------------- |
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103 | !! *** ROUTINE tide_init_potential *** |
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104 | !!---------------------------------------------------------------------- |
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105 | INTEGER :: ji, jj, jk ! dummy loop indices |
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106 | REAL(wp) :: zcons, ztmp1, ztmp2, zlat, zlon, ztmp, zamp, zcs ! local scalar |
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107 | !!---------------------------------------------------------------------- |
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108 | |
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109 | DO jk = 1, nb_harmo |
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110 | zcons = 0.7_wp * Wave(ntide(jk))%equitide * ftide(jk) |
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111 | DO ji = 1, jpi |
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112 | DO jj = 1, jpj |
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113 | ztmp1 = ftide(jk) * amp_pot(ji,jj,jk) * COS( phi_pot(ji,jj,jk) + v0tide(jk) + utide(jk) ) |
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114 | ztmp2 = -ftide(jk) * amp_pot(ji,jj,jk) * SIN( phi_pot(ji,jj,jk) + v0tide(jk) + utide(jk) ) |
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115 | zlat = gphit(ji,jj)*rad !! latitude en radian |
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116 | zlon = glamt(ji,jj)*rad !! longitude en radian |
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117 | ztmp = v0tide(jk) + utide(jk) + Wave(ntide(jk))%nutide * zlon |
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118 | ! le potentiel est composé des effets des astres: |
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119 | IF ( Wave(ntide(jk))%nutide == 1 ) THEN ; zcs = zcons * SIN( 2._wp*zlat ) |
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120 | ELSEIF( Wave(ntide(jk))%nutide == 2 ) THEN ; zcs = zcons * COS( zlat )**2 |
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121 | ELSE ; zcs = 0._wp |
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122 | ENDIF |
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123 | ztmp1 = ztmp1 + zcs * COS( ztmp ) |
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124 | ztmp2 = ztmp2 - zcs * SIN( ztmp ) |
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125 | zamp = SQRT( ztmp1*ztmp1 + ztmp2*ztmp2 ) |
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126 | amp_pot(ji,jj,jk) = zamp |
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127 | phi_pot(ji,jj,jk) = ATAN2( -ztmp2 / MAX( 1.e-10_wp , zamp ) , & |
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128 | & ztmp1 / MAX( 1.e-10_wp, zamp ) ) |
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129 | END DO |
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130 | END DO |
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131 | END DO |
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132 | ! |
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133 | END SUBROUTINE tide_init_potential |
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134 | |
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135 | SUBROUTINE tide_init_load |
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136 | !!---------------------------------------------------------------------- |
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137 | !! *** ROUTINE tide_init_load *** |
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138 | !!---------------------------------------------------------------------- |
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139 | INTEGER :: inum ! Logical unit of input file |
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140 | INTEGER :: ji, jj, itide ! dummy loop indices |
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141 | REAL(wp), DIMENSION(jpi,jpj) :: ztr, zti !: workspace to read in tidal harmonics data |
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142 | !!---------------------------------------------------------------------- |
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143 | IF(lwp) THEN |
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144 | WRITE(numout,*) |
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145 | WRITE(numout,*) 'tide_init_load : Initialization of load potential from file' |
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146 | WRITE(numout,*) '~~~~~~~~~~~~~~ ' |
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147 | ENDIF |
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148 | ! |
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149 | CALL iom_open ( cn_tide_load , inum ) |
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150 | ! |
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151 | DO itide = 1, nb_harmo |
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152 | CALL iom_get ( inum, jpdom_data,TRIM(Wave(ntide(itide))%cname_tide)//'_z1', ztr(:,:) ) |
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153 | CALL iom_get ( inum, jpdom_data,TRIM(Wave(ntide(itide))%cname_tide)//'_z2', zti(:,:) ) |
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154 | ! |
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155 | DO ji=1,jpi |
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156 | DO jj=1,jpj |
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157 | amp_load(ji,jj,itide) = SQRT( ztr(ji,jj)**2. + zti(ji,jj)**2. ) |
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158 | phi_load(ji,jj,itide) = ATAN2(-zti(ji,jj), ztr(ji,jj) ) |
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159 | END DO |
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160 | END DO |
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161 | ! |
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162 | END DO |
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163 | CALL iom_close( inum ) |
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164 | ! |
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165 | END SUBROUTINE tide_init_load |
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166 | |
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167 | !!====================================================================== |
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168 | END MODULE sbctide |
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