A5036151258- Synthetic Aperture Radar (SAR) Applications and Techniques
- earthquake and tectonic studies
- Landslides and related hazards
- Earthquake Detection and Analysis
- Rock Mechanics and Modeling
- Geophysical Methods and Applications
- Geological and Geochemical Analysis
- GNSS positioning and interference
- Seismic Waves and Analysis
- Cryospheric studies and observations
- Soil Moisture and Remote Sensing
- Geophysics and Gravity Measurements
- Methane Hydrates and Related Phenomena
- Geological and Geophysical Studies
- Seismology and Earthquake Studies
- High-pressure geophysics and materials
- Remote Sensing in Agriculture
- 3D Surveying and Cultural Heritage
- Flood Risk Assessment and Management
- Maritime and Coastal Archaeology
- Fire effects on ecosystems
- Geotourism and Geoheritage Conservation
- Seismic Performance and Analysis
- Advanced SAR Imaging Techniques
- Coastal and Marine Management
Istituto Nazionale di Geofisica e Vulcanologia
2015-2024
University of Bologna
2016
We investigate a large geodetic data set of interferometric synthetic aperture radar (InSAR) and GPS measurements to determine the source parameters for three main shocks 2016 Central Italy earthquake sequence on 24 August 26 30 October (Mw 6.1, 5.9, 6.5, respectively). Our preferred model is consistent with activation four coseismic asperities belonging SW dipping normal fault system associated Mount Gorzano-Mount Vettore-Mount Bove alignment. Additional slip, equivalent Mw ~ 6.1–6.2...
We measured ground displacements before and after the 2009 L'Aquila earthquake using multi-temporal InSAR techniques to identify seismic precursor signals. estimated deformation its temporal evolution by exploiting a large dataset of SAR imagery that spans seventy-two months sixteen mainshock. These satellite data show up 15 mm subsidence occurred beginning three years This within two Quaternary basins are located close epicentral area filled with sediments hosting multi-layer aquifers....
Abstract Campi Flegrei caldera (Italy) was affected by a new unrest phase during 2011–2013. We exploit two COSMO‐SkyMed data sets to map the deformation field, obtaining displacement rates reaching 9 cm/yr in 2012 center. The resulting set is fitted geophysical inversion framework using finite element forward models account for 3‐D heterogeneous medium. best fit model north dipping mixed‐mode dislocation source lying at ~5 km depth. driving mechanism ascribable magma input into of large...
Insights into hydrologically-induced deformations of the Earth surface, and particularly aquifers, are crucial for a better understanding water cycle dynamics its interaction with solid earth processes to provide useful information sustainable management resources. The high spatio-temporal resolution millimeter/centimeter-scale accuracy surface deformation data from satellite geodesy techniques such as Global Navigation Satellite System (GNSS) Synthetic Aperture Radar Interferometry (InSAR)...
Vulcano is a composite volcanic edifice representing the southernmost emerged island of Aeolian archipelago (Tyrrhenian Sea, Italy). Grown at convergence Africa and Eurasian plates, part complex volcano-tectonic system characterized by NNW-SSE fault which controls volcanism evolution central branch its continuous long-term deformation. experienced many eruption episodes in historical times, most recent occurred 1888-1890. Since then, it has undergone repeated phases unrest shallow...
In this study the integration of Sentinel-1 InSAR (Interferometric Synthetic Aperture Radar) and GPS (Global Positioning System) data was performed to estimate three components ground deformation field due Mw 6.0 earthquake occurred on August 24th, 2014, in Napa Valley, California, USA. The SAR were acquired by satellite 7th 31st respectively. addition, observations during whole month analyzed. These obtained from Bay Area Regional Deformation Network, UNAVCO Crustal Dynamics Data...
Abstract We present new 40 Ar/ 39 Ar data which allow us to refine the recurrence time for most recent eruptive activity occurred at Colli Albani Volcanic District (CAVD) and constrain its geographic area. Time elapsed since last eruption (36 kyr) overruns (31 in 100 kyr. New interferometric synthetic aperture radar data, covering years 1993–2010, reveal ongoing inflation with maximum uplift rates (>2 mm/yr) area hosting (<200 ka) vents, suggesting that observed might be caused by...
We study the surface deformation following a moderate size M5+ earthquake sequence that occurred close to Tyrnavos village (Thessaly, Greece) in March 2021. adopt interferometric synthetic aperture radar (InSAR) technique exploit several pairs of Sentinel-1 acquisitions and successfully retrieve ground movement caused by three major events (M5+) sequence. The mainshocks at depths varying from ~7 ~10 km, are related activation least normal faults characterizing area previously unknown. Thanks...
We assess about 20 years of onshore and offshore subsidence along a sector the Upper Adriatic Sea (Italy) coastal areas affected by natural soil compaction intense anthropogenic activities such as aquifers exploitation hydrocarbons extraction. Our approach is based on synergistic use independent remote sensing in-situ geodetic data to detect spatially characterise deformation pattern cross-validating different available measurements. collect extensive datasets from i) SAR images provided...
On 3 April 2017, a Mw 6.5 earthquake occurred in Botswana, representing the second-strongest registered since 1949. Such an intraplate event low seismic hazard area and was suspected to be artificial induced by nearby anthropogenic activities (gas extraction). The possible relation between occurrence has been qualitatively investigated. We estimated geometric kinematic characteristics of causative fault from modeling Sentinel-1 InSAR interferograms. Our best-fit solution for main shock is...
Abstract Uplift and subsidence alternate throughout the life cycle of a volcano mirroring magma accumulation, migration and/or gas pressurization, cooling or depressurization, respectively. The unusual occurrence coeval inflation deflation is difficult to reconcile with recharging single chamber, hydrological processes. Here we show persistent flank uplift central at Colli Albani near Rome (Italy), by mapping about 20 years deformation InSAR data. magmatic helium signature increases in...
On 21 May 2016, an Mwp 6.1 earthquake occurred along the Petermann Ranges in Central Australia. Such a seismic event can be classified as rare intraplate because affected area presents low seismicity, being at center of Indo-Australian plate. Also, architecture and kinematics shear zones Orogen are largely unknown. We used Sentinel-1 C-band descending data ALOS-2 L-band ascending to constrain causative fault. Our analysis revealed that nucleated unmapped secondary back-thrust main feature...
In this work, we use X and C-band SAR data provided by the COSMO-SkyMed ENVISAT missions to detect measure some ground deformation phenomena along six coastal areas of Italy. particular, exploit multi-temporal interferometric synthetic aperture radar (InSAR), i.e., small baseline subsets (SBAS) point target analysis (IPTA) methods, retrieve rate maps time series for each investigated area. Multi-temporal InSAR revealed local subsidence uplifting effects in Ravenna Coastal Areas, Fiumicino,...
We investigated the contribution of earthquake-induced surface movements to ground displacements detected through Interferometric Synthetic Aperture Radar (InSAR) data, after Mw 3.9 Ischia earthquake on 21 August 2017. A permanent displacement approach, based limit equilibrium method, allowed estimation spatial extent landslides and associated probability failure. The proposed procedure identified critical areas potentially affected by slope partially overlapping coseismic retrieved InSAR...
This work provides the mean ground deformation rates and displacement time series of Campi Flegrei caldera (Italy) retrieved by satellite remote sensing data analysis from 1992 to 2021. Synthetic Aperture Radar (SAR) images acquired ERS 1-2 (1992-2002), Envisat (2003-2011) Cosmo-SkyMed (2011-2021) are processed multi-temporal SAR Interferometry (InSAR) approach using same technique, parameters reference system, obtain for first a homogeneous time-continuous dataset. The validation InSAR...
In this paper, we applied the differential interferometric synthetic aperture radar (DInSAR) technique to investigate and measure surface displacements due M <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">w</sub> 5.3 (M xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> 5.2), June 21, 2013 earthquake, occurred north of Apuan Alps (NW Italy), in discontinuity zone between Lunigiana Garfagnana area. Two interferograms showing coseismic...
In the present work, Differential SAR Interferometry (DInSAR) technique has been applied to study surface movements affecting sedimentary basin of Cassino municipality. Two datasets images, provided by ERS 1-2 and Envisat missions, have acquired from 1992 2010. Such processed independently each other with different techniques nevertheless providing compatible results. DInSAR data show a subsidence rate mostly located in northeast side city, decreasing about 5–6 mm/yr period 1992–2000 1–2...
Abstract We developed a numerical model by using only early and unreviewed data information related to the 2016 M w 6 earthquake in central Italy quickly evaluate pore pressure contribution aftershock release after severe mainshock. Moreover, computational procedure is proposed for discussing if how such an approach could be useful management of seismic crisis. The two‐dimensional finite element this study based on poroelastic theory includes planar seismogenic fault. geometry parameters are...