Dear Essam et al., When I use GMSYS3D, I work with density contrasts because with absolute densities the results are quite odd.
Having said that, if your layer has the same density as the Gravity data reduction, your density contrast will be zero. To have any results from your inversion I think you have to increase the density for your basement, for instance, to 2.70 g/cm3 (or the density that corresponds to the assumed type of rocks you have in your basement). I hope this helps. BR, Conxi ________________________________________ De: author.nameemail <[email protected]> Enviado: martes, 24 de marzo de 2015 14:56 Para: Geosoft Oasis montaj and Target Asunto: [geonet] Density in GMSYS3D Dear all...... When I use GMSYS3D in gravity inversion, I have some questions. When adding gravity survey, it asks for background density (in the help file, it is the density used in Gravity data reduction, (e.g. 2.67)). If I add one layer (e.g. basement) it will have similarity density (e.g. 2.67). the inversion will not see any variation in density contrast to invert basement surface. All what I have is gravity survey and topography data, and would like to invert the basement. regards Essam --- 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/ --- 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/
