My approach has been to forward model likely scenarios from the current exploration, add some red noise to the results, and then test a number of edge detection & depth estimation methods against my current expectations.
On 5/1/2015 10:25 AM, Doug Perkin <[email protected]> wrote: > 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 > <http://lyris.geosoft.com/read/?fourm=geonet> > > You are currently subscribed to geonet as: > [email protected] <mailto:[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/ > -- Steven Sheriff Professor Emeritus of Geophysics University of Montana Missoula, MT USA 59812 www.umt.edu/geosciences --- 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/
