GravMag is software to analyze gravity and/or magnetic data acquired along a profile. It assumes that objects under the profile extend to infinite distance perpendicular from the profile.
GravMag uses five different windows: the Model Window, the Gravity Data Window, the Magnetics Data Window, and the Section Window. Many of these windows share the same basic menu items. Some aspects of GravMag are set in the Preferences Window.
A typical use of GravMag is to interactively fit gravity and/or magnetic data acquired along a profile. It can also be used to explore how subsurface bodies would effect observations made at the Earth's surface. The Model Window is first presented, where the user can add bodies and edit them precisely. The mode of the program (gravity and/or magnetics) is set from the View Menu: choose gravity if examining gravity, induced magnetics if magnetism is assumed to be from induction, and remanent magnetism if the body has a field unrelated to the applied field. If desired, the user adds bodies to the model in the Model Window and sets their physical parameters. Then the user might open the appropriate data window, Gravity Window for gravity and Magnetics Window for induced and/or remanent magnetism. Observations can be entered here; delimited text files can be imported as well. Then the Section Window will display a cross section of the bodies presently modelled and profiles of any open data windows.
Models and data can be saved from the File menu from their respective windows. Model and data files can be opened using the Open... item in the File menu from any window