GRAVsynth: Software for gravity field functionals and Earth tides effects

GRAVsynth is a software for gravity field functionals and Earth tides effects (GRAVtide module) considering solid Earth tides and Ocean tides. It applies spherical harmonic synthesis of gravity models for computing gravity anomalies and geoid heights.

GRAVsynth was created by Dr. Thomas Loudis Papanikolaou in 2013 and released as open source in 2022. GRAVsytnh released version is the combination of two software modules i.e. GRAVsynth (I) and GRAVtide. It is being used in gravity data analysis and tides modelling. The study project for the development of GRAVsynth was supported by the Hellenic Military Geographical Service (HMGS) for applications in data analysis of terrestrial gravity, heights and tides gauges stations of the HMGS network.

Guide: Instructions for configuration and data requirements

GSynth can be executed through applying the following steps:

1. Download the models' data required by executing the script file gsynth_data_models.m stored in the folder '../scripts/'

cd scripts/
gsynth_data_models

2. Set the configuration file config_gsynth.in stored in the folder '../config/'

cd config/
edit config_gsynth.in
cd ..

3. Edit the input data points file stored in the folder '../config/'. Default file for the computations data points is points_gsynth.in that is set within the configuration file.

cd config/
edit points_gsynth.in
cd ..

4. Execute the main script of the software gsynth_main.m in the folder '../main/'

cd main/
gsynth_main

5. The restuls are written to an output ascii file saved in the folder '../results/'

Cite GSynth:

Papanikolaou T., Papadopoulos N. (2015). High-frequency analysis of Earth gravity field models based on terrestrial gravity and GPS/levelling data: A case study in Greece, Journal of Geodetic Science, 5(1):67-79, https://doi.org/10.1515/jogs-2015-0008.

References:

Papanikolaou T., Papadopoulos N. (2015). High-frequency analysis of Earth gravity field models based on terrestrial gravity and GPS/levelling data: A case study in Greece, Journal of Geodetic Science, 5(1):67-79, https://doi.org/10.1515/jogs-2015-0008.

Papanikolaou T. (2013). GRAVsynth and GRAVtide software' User guide, Dept. of Gravimetry, Hellenic Military Geographical Service (HMGS), Greece.