gTOOLS, an open-source MATLAB program for processing high precision, relative gravity data for time-lapse gravity monitoring

gTOOLS is an open-source software for the processing of relative gravity data. available in MATLAB and as a compiled executable to be run under free Runtime Compiler. The has been designed time-lapse (temporal) monitoring. Although programmed read Scintrex CG-5 CG-6 gravimeters output data files, it can easily modified files from other gravimeters. binds together single-task modules within very simple user interface that based on one text file. Gravity involves three modules: (a) gravimeter calibration; (b) automatic find adjusted differences; (c) post results. Each module optional runs independently others. Data includes averaging out measurements noise, correction solid Earth tides, ocean loading, residual instrumental drift, calculate drift differences between base station monitoring sites, their uncertainties, by weighted least square analysis allows campaign spanning multiple days single run. tested 2015 eruption at Cotopaxi volcano, Ecuador. • Particularly suited Designed work with CG-6, beeasily adapted Automatic Rigorous propagation uncertainties Code thoroughly verified tested.