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Input Files for OASR

The input data are structured in 9 blocks. The first 5 blocks, shown in Table 1, specify the title, options, environmental parameters, together with the desired grazing angle and frequency sampling. The last 4 blocks, outlined in Tables 1 and 2, contain axis specifications for the graphical output. Some of these blocks should always be included and others only if certain options have been specified. The single blocks and parameters are described in detail in the following.


 
Table 1: Layout of OASR input files: I. Calculation and plot parameters.
Input parameter Description Units Limits
BLOCK I: TITLE
TITLE Title of run - 80 ch.
BLOCK II: OPTIONS
A B C Output options - 40 ch.
BLOCK III: ENVIRONMENT
NL Number of layers, incl. halfspaces - NL
D,CC,CS,AC,AS,RO,RG,CL D: Depth of interface. m -
. CC: Compressional speed m/s CC
. CS: Shear speed m/s -
. AC: Compressional attenuation dB/ AC
. AS: Shear attenuation dB/ AS
  RO: Density g/cm3 RO
  RG: RMS value of interface roughness m -
  CL: Correlation length of roughness m CL>0
BLOCK IV: FREQUENCY SAMPLING
FMIN,FMAX,NRFR,NFOU FMIN: Minimum frequency Hz FMIN>0
  FMAX: Maximum frequency Hz FMAX>0
  NRFR: Number of frequencies - NRFR
  NFOU: Plot output increment - NFOU
BLOCK V: ANGLE/SLOWNESS SAMPLING
AMIN,AMAX,NRAN,NAOU AMIN: Minimum angle/slowness dg/(s/km) AMIN
  AMAX: Maximum angle/slowness dg/(s/km) AMAX
  NRAN: Number of angles/slownesses - NRAN
  NAOU: Plot output increment - NAOU
BLOCK VI: ANGLE/SLOWNESS AXES
ALEF,ARIG,ALEN,AINC ALEF: Left border, angle/slws axis dg/(s/km) -
RALO,RAUP,RALN,RAIN ARIG: Right border, angle/slws axis dg/(s/km) -
(only for NFOU>0) ALEN: Length of angle/slws axis cm ALEN>0
  AINC: Distance between tick marks dg/(s/km) AINC>0
  RALO: Lower border of R-loss axis dB -
  RAUP: Upper border of R-loss axis dB -
  RALN: Length of loss and phase axes cm RALN>0
  RAIN: R-loss axis tick mark interval dB RAIN>0


 
Table 2: Layout of OASR input files: II. Plot parameters.
Input parameter Description Units Limits
BLOCK VII: LOSS/FREQUENCY AXES
FLEF,FRIG,FLEN,FINC FLEF: Left border of frequency axis Hz -
RFLO,RFUP,RFLN,RFIN FRIG: Right border of frequency axis Hz -
(only for NAOU>0) FLEN: Length of frequency axis cm FLEN>0
  FINC: Distance between tick marks Hz FINC>0
  RFLO: Lower border of R-loss axis dB -
  RFUP: Upper border of R-loss axis dB -
  RFLN: Length of loss and phase axes cm RALN>0
  RFIN: R-loss axis tick mark interval dB RAIN>0
BLOCK VIII: LOSS CONTOUR PLOTS (Option C)
ALEF,ARIG,ALEN,AINC ALEF: Left border, angle/slws axis dg/(s/km) -
FRLO,FRUP,OCLN,NTKM ARIG: Right border, angle/slws axis dg/(s/km) -
ZMIN,ZMAX,ZINC ALEN: Length of angle/slws axis cm ALEN>0
(only for option C) AINC: Distance between tick marks dg/(s/km) AINC>0
  FRLO: Lower border of frequency axis Hz FRLO>0
  FRUP: Upper border of frequency axis Hz FRUP>0
  OCLN: Length of one octave cm OCLN>0
  NTKM: Number of tickmarks pr octave - NTKM>0
  ZMIN: Minimum contour level dB -
  ZMAX: Maximum contour level dB -
  ZINC: Contour level increment dB ZINC>0
BLOCK IX: SVP AXES
VLEF,VRIG,VLEN,VINC VLEF: Wave speed at left border m/s -
DVUP,DVLO,DVLN,DVIN VRIG: Wave speed at right border m/s -
(only for option Z) VLEN: Length of wave speed axis cm VLEN>0
  VINC: Wave speed tickmark distance m/s VINC>0
  DVUP: Depth at upper border m -
  DVLO: Depth at lower border m -
  DVLN: Length of depth axis cm DVLN>0
  DVIN: Depth axis tickmark distance m DVIN>0



 
next up previous contents
Next: Block I: Title Up: OASR: OASES Reflection Coefficient Previous: OASR: OASES Reflection Coefficient
henrik schmidt
1999-08-25