In OASP3D 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, to run the SAFARI-FIPP case 2 problem with automatic sampling, and a point force within the sea bed at angle with the sea bed, and horizontal angle relative to the x-axis, and with receivers at depths 100, 105 and 120 m, change the data file as follows:
SAFARI-FIPP case 2. Auto sampling. Force 30/45 deg V H f # Bessel integration. 5 0 4 0 0 0 0 0 0 0 0 1500 0 0 0 1 0 100 1600 400 0.2 0.5 1.8 0 120 1800 600 0.1 0.2 2.0 0 2 1.0 30.0 45.0 # ITYP, FMAG, HANG, VANG 101 # SD = 101 m 100 100 -3 # 3 receivers 100.0 105.0 120.0 # Receiver depths in meters 300 1E8 -1 0 0 # NW = -1 2048 0.0 12.5 0.006 0.5 0.5 5
The PP Post-processor is compatible and will depth-stack the traces at the correct depths.