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Analysis of 20-year terrestrial gravity and ground deformation changes collected at Mt. Etna: Comparison with satellite data

Authors

Pereira,  Ailin
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

Samperi,  Luca
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

Greco,  Filippo
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

Palano,  Mimmo
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

Carbone,  Daniele
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

Contrafatto,  Danilo
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

Messina,  Alfio Alex
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

Mirabella,  Luca Timoteo
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

Pereira,  Ayelén
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;
Etna, Deutsches GeoForschungsZentrum;

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Citation

Pereira, A., Samperi, L., Greco, F., Palano, M., Carbone, D., Contrafatto, D., Messina, A. A., Mirabella, L. T., Pereira, A. (2023): Analysis of 20-year terrestrial gravity and ground deformation changes collected at Mt. Etna: Comparison with satellite data, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4301


Cite as: https://gfzpublic.gfz.de/pubman/item/item_5021736
Abstract
We present a preliminary comparison between satellite and terrestrial gravity and GNSS data collected in a twenty-year period (2002-2022) at Mt. Etna volcano, with the aim of investigating the capabilities of this integrated approach to study the dynamics of volcanic phenomena over time-scales of months to years. The terrestrial gravity data were collected through absolute and relative spring gravimeters in the framework of almost monthly campaigns. Instead, GNSS measurements are continuously collected for monitoring purposes. Regarding satellite data, we used the Gravity Recovery and Climate Experiment (GRACE) data and GRACE Follow-On L3 solutions, that can provide high-quality information about mass distribution at regional and global scales in a long-term interval. After being corrected for the known effects, reduced terrestrial gravity and GNSS height variations were compared with satellite data. The comparison reveals long-term correlations between the analyzed time series which could represent volcano-scale variations.