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TitleSpatiotemporal analysis and interpretation of 1993-2013 ground deformation at Campi Flegrei, Italy, observed by advanced DInSAR
AuthorSamsonov, S V; Tiampo, K F; Camacho, A G; Fernández, J; Gonzalez, P J
SourceGeophysical Research Letters vol. 41, no. 17, 2014 p. 6101-6108, (Open Access)
Alt SeriesEarth Sciences Sector, Contribution Series 20140310
Mediapaper; digital; on-line
File formatpdf
AreaNaples; Italy
Lat/Long WENS 14.0000 14.2500 40.9167 40.7500
Subjectsgeophysics; remote sensing; radar imagery; deformation; hydrothermal systems; subsidence; crustal uplift; volcanoes; deformation; global positioning system
Illustrationslocation maps; plots; tables; structural cross-sections; satellite images
ProgramRemote Sensing Science, Methodology
Released2014 09 02
AbstractCampi Flegrei is one of the highest risk volcanic areas in the world because of its close proximity to the city of Naples. Here we apply the Multidimensional SBAS (MSBAS) Differential Interferometric Synthetic Aperture Radar (DInSAR) technique to obtain vertical and horizontal components of ground deformation for Campi Flegrei at high spatial and temporal resolution that span, for the first time, twenty years. The area underwent continuous subsidence from 1993 through 1999. Moderate uplift began in 2010 and substantially increased through 2012, reaching approximately 13 cm by 2013. We model the observed deformation to determine source parameters for subsidence and uplift epochs. Both the inflation and deflation mechanisms involve large, extended sources in a layered hydrothermal system whose location is controlled by the caldera structure and stratigraphy. The temporal resolution of MSBAS is comparable to GPS, with superior precision and spatial resolution, making it an excellent alternative for volcano monitoring.
Summary(Plain Language Summary, not published)
In this publication we produced long time series of ground deformation spanning 1993-2013 over a region in Italy that is suitable for such studies. We demonstrated that earlier subsidence followed by uplift was produced by the source located at the same depth and of the same strength. This study improved understanding of the volcanic and seismic processes potentially capable of producing significant environmental impact and causing damages.