Hi Peter,
The apparent dip (geologist's use) of a bed in any desired crossection direction can be calculated by:
tan a = tan b * sin c where a is the apparent dip, b is the true dip and c is the angle between the strike of the bed and the direction of the apparent dip.
.......or use the Schmidt net !
Ted
bornemann@anchorage.oilfield.slb.com
Our client wants to use OBMI dips for his seismic velocity modeling. We have a surface seismic line in a certain direction. We also have a dip set representing the bedding - true dip angle and azimuth.
Does anybody have a little program to calculate the apparent dip for a different (given) azimuth?
We can do it graphically in StrucView by changing the cross section direction, but we also need the dip values in an ascii file.
Thanks,
Peter