acoustic

阐述了建立物质本构关系时应满足的基本公理, 较详细地推导了各种类型粘 弹性物质的本构关系, 论述了变率理论与泛函理论之间的关系, 推导了对于粘弹性问题 求解具有实用意义的对应定理, 并以简单的例子

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    Program name (sun4):  /home/dcorriga/sun4/exe/acoustic
    Program name (sun5):  /home/dcorriga/sun5/exe/acoustic

    Purpose:    Synthetic seismograms for the problem of a
                layered half space in which each layer is acoustic

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Card #1   Columns   Definition
          -------   ----------
            1-4     'ACOU'
             15        'N'
           21-70    Output SEGY data set name

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Card #2   Columns   Definition
          -------   ----------
            1-60    Identifying Text

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Card #3   Columns   Definition
          -------   ----------
            1-10    Receiver geometry:
                    = 0: Conventional streamer: output P
           11-20    Source radius (must be > 0)
           21-30    Source depth (must be > 0)
           31-40    Receiver depth (must be > 0)
           41-50    Spreading model: 
                    = 0: 2D propagation
                    = 1: 3D propagation
           51-60    Direct arrival/free surface options:

                    Option   Free Surface  Direct Arrival
                    ------   ------------  --------------
                       0        Yes           Yes
                       1        No            Yes
                       2        Yes           No 
                       3        No            Nos

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Card #4   Columns   Definition
          -------   ----------
            1-10    Low cut frequency
           11-20    Low pass frequency
           21-30    High pass frequency
           31-40    High cut frequency

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Card #5   Columns   Definition
          -------   ----------
            1-10    Sample rate (ms)
           11-20    Record length (ms)
           21-30    First offset
           31-40    Offset increment
           41-50    Number of offsets

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Card #6   Columns   Definition
          -------   ----------
            1-10    Number of layers (max = 500)
           11-20    Minimum velocity for computation
           21-30    Number of ray parameters (max = 1200)
           31-40    Percent taper in wavenumber

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         For each layer:

Card #7   Columns   Definition
          -------   ----------
            1-10    Vertical P-wave velocity
           11-20    Vertical S-wave velocity (not used)
           21-30    Density
           31-40    P-wave Q-value 
           41-50    S-wave Q-value (not used)
           51-60    Layer thickness

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     Typical run:

          /home/dcorriga/sun5/exe/acoustic < scr01.p > scr01.d &

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     Sample cards in file:

           /home/dcorriga/run/msyn/acoustic/scr01.p


ACOU          N     /local1/msyn/scr01.segy
 SCR ACOUSTIC MODEL 01/  LINE SOURCE /
         0         1         5         7         0
         4         8        50        75
         2      3000        10        10       200
         6      1200       800        10
      1500       750      2.00       200                1106
      3500      1750      2.00       200                 200
      2000      1000      2.00       200                 200
      2400      1200      2.00       200                 200
      2800      1400      2.00       200                 200
      3100      1750      2.00       200                   0