Actually, there are plenty of alternative DC Inversion software; I hate using res2dinv; unfortunately it's relatively easy to get into. I would have much preferred ZondRes2D for it's user experience. ...

OpendTect may do this, however getting to that stage would be a painful experience. Petrel can do this very easily, however, that is not anywhere near free... If you're a student, your department ...

Perhaps an easier question would be - what percentage of the earth has discovered oil/gas fields! This data should be easier to find than the surveys themselves, and can probably give you a rough ...

Maybe it's outside the scope of your question (I.e. droughts) but the lack of rainfall associated with warming climates does (and is) affecting saline water intrusion along coastal aquifers, which ...

Inaccuracies are inherent based on a wide range of variables. In particular, the array type, as well as the inversion will affect the resistivity of any layer or body. Interpreting data based purely ...

If I had to guess, I'd attribute the difference to gravitational separation - as you said, continental crust is less dense than oceanic crust. I suppose chemically different magmas would seperate in ...