This page lists software packages for processing gravity data. It does not include software intended primarily for subsurface modeling, e.g. GM-SYS. The USGS provides no warranty, expressed or implied, as to the correctness of the furnished software or the suitability for any purpose. The software has been tested, but as with any complex software, there could be undetected errors. Users who find errors are requested to report them to the USGS. The USGS has limited resources to assist non-USGS users; however, we make an attempt to fix reported problems and help whenever possible. GSadjust: Python GUI for processing relative-gravity data and network adjustment. Originally developed as PyGrav at the University of Strasbourg (Hector, [...]
Summary
This page lists software packages for processing gravity data. It does not include software intended primarily for subsurface modeling, e.g. GM-SYS.
The USGS provides no warranty, expressed or implied, as to the correctness of the furnished software or the suitability for any purpose. The software has been tested, but as with any complex software, there could be undetected errors. Users who find errors are requested to report them to the USGS. The USGS has limited resources to assist non-USGS users; however, we make an attempt to fix reported problems and help whenever possible.
GSadjust: Python GUI for processing relative-gravity data and network adjustment. Originally developed as PyGrav at the University of Strasbourg (Hector, B., Hinderer, J., 2016. pyGrav, a Python-based program for handling and processing relative gravity data. Comput. Geosci. 91, 90–97. doi:10.1016/j.cageo.2016.03.010). Further development, including adaptation for Burris relative-gravity meter output, by Jeff Kennedy.
Excel: Excel spreadsheets developed at the AZWSC for data collection and processing. Originally developed for L&R meters without internal data-logging, the "LandR" spreadsheet includes meter-specific calibration tables and expects the user to record one-minute averages on a unique worksheet for each station. The "Burris" spreadsheet provides a simplified version in which the user enters the average value at each station occupation. For additional information see the AZWSC Relative Gravity Data QAQC plan.
Both versions produce non-network adjusted gravity differences between stations (i.e., loops may not close to zero). An average drift rate is calculated for each station included in the gravity difference.
Gravnet (Hwang): Fortran code and windows executable to perform network adjustment described in Hwang, C., Wang, C., and Lee, L., 2002, Adjustment of relative gravity measurements using weighted and datum-free constraints: Computers & Geosciences, v. 28, p. 1005–1015.
Gravnet (NGA): Internal software used for network adjustment by the National Geospatial-Intelligence Agency. Not publicly available. Methods can be implemented from GSadjust.
GravProcess: A set of MATLAB routines to process gravity data from complex campaign surveys and calculate the associated gravity field.
pyGABEUR-ITB: Software for adjustment of relative gravimeter data. Code not available online. Documented in a journal article (Geomatika).
