The new option `T' allows for specification of an array tilt in the vertical plane containing the source and the receivers.
The tilt angle and rotation origin is specified in the receiver depth line (Block VI in SAFARI manual):
| Standard | For option T |
| RD1 RD2 NR | ZREF ANGLE |
The vertical arrays are rotated by an angle `ANGLE' in deg relative to the vertical. The rotation is performed with origin at depth `ZREF'.
The parameters RD1, RD2 and NR always refer to the untilted case. In the tilted case these parameters do therefore define the array geometry and not the actual depths of the receivers in the tilted array. The same is the case for the graphics output produced by the post-processor PP.
The source(s) is always at the origin and is therefore not rotated. Thus, for zero-offset tilted VSP-s, the reference depth ZREF should be set equal to the source depth SD!