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TitleAnthropogenic and natural ground deformation near Bologna, Italy observed by Radarsat-2 InSAR during 2008-2013
AuthorSamsonov, S VORCID logo; González, P J; Tiampo, K F
SourceMathematics of Planet Earth, proceedings of the 15th annual conference of the international association of mathematical geosciences; by Pardo-Igúzquiza, E (ed.); Guardiola-Albert, C (ed.); Heredia, J (ed.); Moreno-Merino, L (ed.); Durán, J J (ed.); Vargas-Guzmán, J A (ed.); Lecture Notes in Earth Sciences vol. 36, 2014 p. 383-386, 85
Alt SeriesEarth Sciences Sector, Contribution Series 20130092
PublisherSpringer Berlin Heidelberg
Meeting15th annual conference of the international association of mathematical geosciences; Madrid; ES; September 2-6, 2013
Mediapaper; on-line; digital
File formatpdf
AreaBologna; Italy
Lat/Long WENS 11.1667 11.5833 44.5833 44.3500
Subjectsstructural geology; remote sensing; deformation; subsidence; earthquakes
ProgramRemote Sensing Science
Released2013 10 08
AbstractWe present a ground deformation map for a large portion of the Po Plain messinian to quaternary sedimentary basin near the City of Bologna, Italy. We acquired and processed fifty nine ascending and thirty eight descending Radarsat-2 images (beam S3) spanning 2008-2013 period and performed the Multidimensional Small Baseline Subset (MSBAS) analysis, which combines ascending and descending data into a single two dimensional product—vertical and horizontal (east-west) time series of ground deformation for the overlapping area of ascending and descending passes. In the resolved region, we observe subsidence with the rates up to 2 cm/year and minor horizontal motion. The time series of deformation revealed nearly constant rate of subsidence moderately affected by atmospheric and decorrelation noise. Causes of subsidence were identified in previous studies as related to groundwater withdrawal for agricultural and industrial purposes. We also produced co-seismic deformation map of the 2012 Emilia earthquake sequence but it is of moderate precision due to severe decorrelation.
Summary(Plain Language Summary, not published)
Ground deformation (e.g. subsidence, uplift) produced by natural (earthquakes, volcanic eruptions) and anthropogenic (bridge and building collapses) disasters is one of the largest sources of casualties and damage to infrastructure around the world. The most cost-efficient tool for monitoring natural and anthropogenic hazards over large regions is space-borne Synthetic Aperture Radar (SAR) and Canada operates the most advanced SAR satellite in the world - RADARSAT-2. To further improve processing methodologies that are used for monitoring ground deformation here we investigated land uplift in Naples region of Italy that currently is undergoing active ground deformation due to volcanic inflation. The space-based technique successfully identified seismic-related uplift and subsidence in the study region, along with related seasonal variability.

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