GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation

Abstract Global Navigation Satellite System (GNSS) is used in seismology to study the ground displacements as well as to monitor the ionospheric total electron content (TEC) perturbations following seismic events. The aim of this work is to combine these two observations in one real-time method base...

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Autores principales:	Michela Ravanelli, Giovanni Occhipinti, Giorgio Savastano, Attila Komjathy, Esayas B. Shume, Mattia Crespi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/51c96414320945c9a18bbbb90dc50151
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spelling	oai:doaj.org-article:51c96414320945c9a18bbbb90dc501512021-12-02T14:06:56ZGNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation10.1038/s41598-021-82532-62045-2322https://doaj.org/article/51c96414320945c9a18bbbb90dc501512021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82532-6https://doaj.org/toc/2045-2322Abstract Global Navigation Satellite System (GNSS) is used in seismology to study the ground displacements as well as to monitor the ionospheric total electron content (TEC) perturbations following seismic events. The aim of this work is to combine these two observations in one real-time method based on the Total Variometric Approach (TVA) to include the GNSS real-time data stream in future warning systems and tsunami genesis estimation observing both, ground motion and TEC. Our TVA couples together the Variometric Approach for Displacement Analysis Stand-alone Engine (VADASE) with the Variometric Approach for Real-Time Ionosphere Observation (VARION) algorithms. We apply the TVA to the Mw 8.3 Illapel earthquake, that occurred in Chile on September 16, 2015, and we demonstrate the coherence of the earthquake ground shaking and the TEC perturbation by using the same GNSS data stream in a real-time scenario. Nominally, we also highlight a stronger kinetic energy released in the north of the epicenter and visible in both, the ground motion and the TEC perturbation detect at 30 s and around 9.5 min after the rupture respectively. The high spatial resolution of ionospheric TEC measurement seems to match with the extent of the seismic source. The GNSS data stream by TVA of both the ground and ionospheric measurement opens today new perspectives to real-time warning systems for tsunami genesis estimation.Michela RavanelliGiovanni OcchipintiGiorgio SavastanoAttila KomjathyEsayas B. ShumeMattia CrespiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Michela Ravanelli Giovanni Occhipinti Giorgio Savastano Attila Komjathy Esayas B. Shume Mattia Crespi GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation
description	Abstract Global Navigation Satellite System (GNSS) is used in seismology to study the ground displacements as well as to monitor the ionospheric total electron content (TEC) perturbations following seismic events. The aim of this work is to combine these two observations in one real-time method based on the Total Variometric Approach (TVA) to include the GNSS real-time data stream in future warning systems and tsunami genesis estimation observing both, ground motion and TEC. Our TVA couples together the Variometric Approach for Displacement Analysis Stand-alone Engine (VADASE) with the Variometric Approach for Real-Time Ionosphere Observation (VARION) algorithms. We apply the TVA to the Mw 8.3 Illapel earthquake, that occurred in Chile on September 16, 2015, and we demonstrate the coherence of the earthquake ground shaking and the TEC perturbation by using the same GNSS data stream in a real-time scenario. Nominally, we also highlight a stronger kinetic energy released in the north of the epicenter and visible in both, the ground motion and the TEC perturbation detect at 30 s and around 9.5 min after the rupture respectively. The high spatial resolution of ionospheric TEC measurement seems to match with the extent of the seismic source. The GNSS data stream by TVA of both the ground and ionospheric measurement opens today new perspectives to real-time warning systems for tsunami genesis estimation.
format	article
author	Michela Ravanelli Giovanni Occhipinti Giorgio Savastano Attila Komjathy Esayas B. Shume Mattia Crespi
author_facet	Michela Ravanelli Giovanni Occhipinti Giorgio Savastano Attila Komjathy Esayas B. Shume Mattia Crespi
author_sort	Michela Ravanelli
title	GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation
title_short	GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation
title_full	GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation
title_fullStr	GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation
title_full_unstemmed	GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation
title_sort	gnss total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/51c96414320945c9a18bbbb90dc50151
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GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation

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