Hi I have been trying various source depth estimation methods for grids of potential field data and wanted to start a discussion on which methods tend to provide better solutions for gravity vs aeromag. I am usually interested in sub vertical or dipping contacts, so for magnetics I have tried a structural index of 0 or 1 and for Gravity I have tried 0 and -1 using the USGS special function depth analysis GX. I have also tried Euler with various window sizes.
The local wavenumber method using the USGS GX was interesting because it actually provides estimates of the structural index for various anomalies; however that method tended to give a lot more noise and was in places giving me a structural index of 3 when the RTP grid clearly did not look like a magnetic dipole source. Does anyone have experience with these depth estimation methods? Which methods tend to give more reliable solutions for a vertical or dipping contact using aeromag? And which methods tend to provide better solutions for a vertical or dipping contact using gravity? Any advice or discussion on these methods would be much appreciated Regards, Doug --- Forum archives can be accessed here: http://lyris.geosoft.com/read/?forum=geonet You are currently subscribed to geonet as: [email protected]. To subscribe or unsubscribe from any of our forums, select the User Forum selection on the Geosoft Community page: http://www.geosoft.com/support/community/forums/register/
