Block VI: Receivers

The default specification of the receiver depths is the same as for SAFARI, i.e. through the parameters RD1, RD2, NR and IR in Block VI, with

RD1

Depth of uppermost receiver in m

RD2

Depth of lowermost receiver in m

NR

Number of receiver depths

IR

Depth increment for options I and T

By default, the NR receivers are placed equidistantly in the vertical.

Non-equidistant Receiver Depths

In OASES the receiver depths can optionally be specified individually. The parameter NR is used as a flag for this option. Thus, if NR < 0the number of receivers is interpreted as -NR, with the individual depths following immidiately following Block VI. As an example, SAFARI FIP case 2 with receivers at 100, 105 and 120 m is run with the following data file:

SAFARI-FIP case 2. 
N I T J Z
30 30 1 0
5
  0    0     0 0   0   0   0
  0 1500 -1480 0   0   1   0
 30 1480 -1490 0   0   1   0
100 1600   400 0.2 0.5 1.8 0
120 1800   600 0.1 0.2 2.0 0
50
100 100 -3 1		       # 3 receiver depths
100.0 105.0 120.0              # Receiver depths in meters
700 1E8  
1024 1 512
 0  5 20  1
20 80 12 10
1450 1550 10 25
   0  100 10 20