Multitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)

Volcanic islands are often affected by ground displacement such as slope instability, due to their peculiar morphology. This is the case of Ischia Island (Naples, Italy) dominated by the Mt. Epomeo (787 m a.s.l.), a volcano-tectonic horst located in the central portion of the island. This study aims...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Lisa Beccaro, Cristiano Tolomei, Roberto Gianardi, Vincenzo Sepe, Marina Bisson, Laura Colini, Riccardo De Ritis, Claudia Spinetti
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	InSAR GPS remote sensing ground displacement Ischia volcano earthquake Science Q
Acceso en línea:	https://doaj.org/article/c879e6c8e24d405eb9d4150ecc98a0ae
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c879e6c8e24d405eb9d4150ecc98a0ae
record_format	dspace
spelling	oai:doaj.org-article:c879e6c8e24d405eb9d4150ecc98a0ae2021-11-11T18:51:34ZMultitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)10.3390/rs132142532072-4292https://doaj.org/article/c879e6c8e24d405eb9d4150ecc98a0ae2021-10-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/21/4253https://doaj.org/toc/2072-4292Volcanic islands are often affected by ground displacement such as slope instability, due to their peculiar morphology. This is the case of Ischia Island (Naples, Italy) dominated by the Mt. Epomeo (787 m a.s.l.), a volcano-tectonic horst located in the central portion of the island. This study aims to follow a long temporal evolution of ground deformations on the island through the interferometric analysis of satellite SAR data. Different datasets, acquired during Envisat, COSMO-SkyMed and Sentinel-1 satellite missions, are for the first time processed in order to obtain the island ground deformations during a time interval spanning 17 years, from November 2002 to December 2019. In detail, the multitemporal differential interferometry technique, named small baseline subset, is applied to produce the ground displacement maps and the associated displacement time series. The results, validated through the analysis and the comparison with a set of GPS measurements, show that the northwestern side of Mt. Epomeo is the sector of the island characterized by the highest subsidence movements (maximum vertical displacement of 218 mm) with velocities ranging from 10 to 20 mm/yr. Finally, the displacement time series allow us to correlate the measured ground deformations with the seismic swarm started with the Mw 3.9 earthquake that occurred on 21 August 2017. Such correlations highlight an acceleration of the ground, following the mainshock, characterized by a subsidence displacement rate of 0.12 mm/day that returned to pre-earthquake levels (0.03 mm/day) after 6 months from the event.Lisa BeccaroCristiano TolomeiRoberto GianardiVincenzo SepeMarina BissonLaura ColiniRiccardo De RitisClaudia SpinettiMDPI AGarticleInSARGPSremote sensingground displacementIschia volcanoearthquakeScienceQENRemote Sensing, Vol 13, Iss 4253, p 4253 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	InSAR GPS remote sensing ground displacement Ischia volcano earthquake Science Q
spellingShingle	InSAR GPS remote sensing ground displacement Ischia volcano earthquake Science Q Lisa Beccaro Cristiano Tolomei Roberto Gianardi Vincenzo Sepe Marina Bisson Laura Colini Riccardo De Ritis Claudia Spinetti Multitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)
description	Volcanic islands are often affected by ground displacement such as slope instability, due to their peculiar morphology. This is the case of Ischia Island (Naples, Italy) dominated by the Mt. Epomeo (787 m a.s.l.), a volcano-tectonic horst located in the central portion of the island. This study aims to follow a long temporal evolution of ground deformations on the island through the interferometric analysis of satellite SAR data. Different datasets, acquired during Envisat, COSMO-SkyMed and Sentinel-1 satellite missions, are for the first time processed in order to obtain the island ground deformations during a time interval spanning 17 years, from November 2002 to December 2019. In detail, the multitemporal differential interferometry technique, named small baseline subset, is applied to produce the ground displacement maps and the associated displacement time series. The results, validated through the analysis and the comparison with a set of GPS measurements, show that the northwestern side of Mt. Epomeo is the sector of the island characterized by the highest subsidence movements (maximum vertical displacement of 218 mm) with velocities ranging from 10 to 20 mm/yr. Finally, the displacement time series allow us to correlate the measured ground deformations with the seismic swarm started with the Mw 3.9 earthquake that occurred on 21 August 2017. Such correlations highlight an acceleration of the ground, following the mainshock, characterized by a subsidence displacement rate of 0.12 mm/day that returned to pre-earthquake levels (0.03 mm/day) after 6 months from the event.
format	article
author	Lisa Beccaro Cristiano Tolomei Roberto Gianardi Vincenzo Sepe Marina Bisson Laura Colini Riccardo De Ritis Claudia Spinetti
author_facet	Lisa Beccaro Cristiano Tolomei Roberto Gianardi Vincenzo Sepe Marina Bisson Laura Colini Riccardo De Ritis Claudia Spinetti
author_sort	Lisa Beccaro
title	Multitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)
title_short	Multitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)
title_full	Multitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)
title_fullStr	Multitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)
title_full_unstemmed	Multitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)
title_sort	multitemporal and multisensor insar analysis for ground displacement field assessment at ischia volcanic island (italy)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c879e6c8e24d405eb9d4150ecc98a0ae
work_keys_str_mv	AT lisabeccaro multitemporalandmultisensorinsaranalysisforgrounddisplacementfieldassessmentatischiavolcanicislanditaly AT cristianotolomei multitemporalandmultisensorinsaranalysisforgrounddisplacementfieldassessmentatischiavolcanicislanditaly AT robertogianardi multitemporalandmultisensorinsaranalysisforgrounddisplacementfieldassessmentatischiavolcanicislanditaly AT vincenzosepe multitemporalandmultisensorinsaranalysisforgrounddisplacementfieldassessmentatischiavolcanicislanditaly AT marinabisson multitemporalandmultisensorinsaranalysisforgrounddisplacementfieldassessmentatischiavolcanicislanditaly AT lauracolini multitemporalandmultisensorinsaranalysisforgrounddisplacementfieldassessmentatischiavolcanicislanditaly AT riccardoderitis multitemporalandmultisensorinsaranalysisforgrounddisplacementfieldassessmentatischiavolcanicislanditaly AT claudiaspinetti multitemporalandmultisensorinsaranalysisforgrounddisplacementfieldassessmentatischiavolcanicislanditaly
_version_	1718431728116170752

Multitemporal and Multisensor InSAR Analysis for Ground Displacement Field Assessment at Ischia Volcanic Island (Italy)

Ejemplares similares