Validation Results: Shooting Errors

Figures below show the difference between desired epicentral distance and the actual distance resulting of take off angle optimization. This optimization stops when the shooting error is smaller than 0.001°. In very rare cases, a solution of this quality is not found (although the shooting error is still smaller than 0.01°), but usually, the shooting error is much smaller than this limit and can therefore be neglected. (The shooting error is controlled by an epsilon parameter which is set to 0.001°. Reducing this parameter to 0.00001° does not reduce the travel time error but increases the cpu time needed.)

The Shooting error is independent of wave type and model discretization.

Shooting Error for P and PKIKP rays.
Shooting Error for S and SKIKS rays.

eof.