A multi‐temporal InSAR method incorporating both persistent scatterer and small baseline approaches

Hooper, Andrew

doi:10.1029/2008gl034654

Cited by 1,046 publications

(807 citation statements)

References 14 publications

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“…In this study, we measured ground deformation rates in western Sicily through the A-DInSAR StaMPS method (Stanford Method for Persistent Scatterers, Hooper, 2008), using image data from the ESA ENVISAT satellite spanning the time period 2003-2010. This approach, based on the Persistent Scatters Interferometry, permits to retrieve estimates of the displacements occurring between different acquisitions of SAR data, distinguishing the phase shift related to ground motions from the phase component, due to atmosphere, topography and noise through a statistical analysis of the signals backscattered from a network of individual phase coherent targets.…”

Section: Interferometric Sar Datamentioning

confidence: 99%

Geodetic and geological evidence of active tectonics in south-western Sicily (Italy)

Barreca

Bruno

Cocorullo

et al. 2014

Journal of Geodynamics

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a b s t r a c tIntegrated geological, geodetic and marine geophysical data provide evidence of active deformation in south-western Sicily, in an area spatially coincident with the macroseismic zone of the destructive 1968 Belice earthquake sequence. Even though the sequence represents the strongest seismic event recorded in Western Sicily in historical times, focal solutions provided by different authors are inconclusive on possible faulting mechanism, which ranges from thrusting to transpression, and the seismogenic source is still undefined. Interferometric (DInSAR) observations reveal a differential ground motion on a SW-NE alignment between Campobello di Mazara and Castelvetrano (CCA), located just west of the maximum macroseismic sector. In addition, new GPS campaign-mode data acquired across the CCA alignment documents NW-SE contractional strain accumulation. Morphostructural analysis allowed to associate the alignment detected through geodetic measurements with a topographic offset of Pleistocene marine sediments. The on-land data were complemented by new high-resolution marine geophysical surveys, which indicate recent contraction on the offshore extension of the CCA alignment. The discovery of archaeological remains displaced by a thrust fault associated with the alignment provided the first likely surface evidence of coseismic and/or aseismic deformation related to a seismogenic source in the area. Results of the integrated study supports the contention that oblique thrusting and folding in response to NW-SE oriented contraction is still active. Although we are not able to associate the CCA alignment to the 1968 seismic sequence or to the historical earthquakes that destroyed the ancient Greek city of Selinunte, located on the nearby coastline, our result must be incorporated in the seismic hazard evaluation of this densely populated area of Sicily.

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Section: Interferometric Sar Datamentioning

confidence: 99%

Geodetic and geological evidence of active tectonics in south-western Sicily (Italy)

Barreca

Bruno

Cocorullo

et al. 2014

Journal of Geodynamics

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“…The measure of land motions above producing reservoirs has advanced immensely over the past two decades owing to the development of synthetic aperture radar (SAR)-based methodologies (Fielding et al, 1998;Xu et al, 2001). The most recent multi-image multitrack technologies (Hooper, 2008;Ferretti et al, 2011) provide high-precision (millimetric) time series of vertical and horizontal west-east displacements on highdensity (up to a few thousands per km 2 ) coherent radar reflectors spread on the study area.…”

Section: Introductionmentioning

confidence: 99%

Efficient global optimization of reservoir geomechanical parameters based on synthetic aperture radar-derived ground displacements

et al. 2016

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When large volumes of fluids are removed from or injected into underground formations for, e.g., hydrocarbon and water production, CO 2 storage, gas storage, and geothermal energy exploitation, monitoring of surface deformations coupled to numerical modeling improves our understanding of reservoir behavior. The ability to accurately simulate surface displacements, however, is often impaired by limited information on reservoir geometry, waterdrive strength, and fluid-geomechanical parameters characterizing the geologic formations of interest. We have investigated the ability of efficient global optimization (EGO) to reduce the parameter uncertainties usually affecting geomechanical modeling. EGO is used to identify the parameter set that minimizes the difference in land displacements obtained from synthetic aperture radar (SAR)-derived measurements and 3D geomechanical modeling. We have tested the approach on the Tengiz giant oil field, Kazakhstan, where large uncertainties affect our knowledge of geomechanical parameters and pore pressure evolution. SqueeSAR on ENVISAT and RADARSAT-1 images acquired between 2004 and 2007 provided a set of high-precision, high-areal-density subsidence measurements of the test site. Based on the available information, a 3D geomechanical model of the reservoir has been developed using the elastoplastic finite-element code GEPS3D. Our results indicated that EGO efficiently identifies the global optimum in the parameter space, yielding a significant reduction in the difference between modeled and measured land subsidence. The match between simulated and SAR-measured horizontal displacements was developed as validation of the EGO calibration, which thus proved an effective and rather inexpensive method for the simultaneous management of several uncertainties and the reliable quantification of the rock properties.

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“…The time-series analysis for the study area was performed using the following workflow: (1) the generation of a subset of small baseline interferograms; (2) the selection of slowly de-correlating filtered phase (SDFP) pixels, defined as pixels whose filtered interferometric phase after azimuth and range filtering shows slow de-correlation over short time intervals; (3) the performance of 3-D phase unwrapping of the SDFP pixels; (4) the generation of the time-series and mean velocity deformations according to the coherent pixels; (5) the visualization of the obtained deformation StaMPS results and the export to the GIS environment; (6) the projection of the LOS deformation along the local steepest slope deformation that is a downslope movement, which is then further analyzed with thematic maps. More details on the StaMPS method can be found in the literature [34,36].…”

Section: Stamps Methodsmentioning

confidence: 99%

“…We used the StaMPS software to obtain the ground deformation [34] by applying the SBAS technique to the interferograms proposed by Berardino et al, 2002 [35]. The SBAS technique uses interferograms with small spatiotemporal baselines to mitigate the de-correlation phenomena of the SAR data and to reduce the Doppler centroid frequency differences [35].…”

Section: Stamps Methodsmentioning

confidence: 99%

ALOS/PALSAR InSAR Time-Series Analysis for Detecting Very Slow-Moving Landslides in Southern Kyrgyzstan

et al. 2015

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This study focuses on evaluating the potential of ALOS/PALSAR time-series data to analyze the activation of deep-seated landslides in the foothill zone of the high mountain Alai range in the southern Tien Shan (Kyrgyzstan). Most previous field-based landslide investigations have revealed that many landslides have indicators for ongoing slow movements in the form of migrating and newly developing cracks. L-band ALOS/PALSAR data for the period between 2007 and 2010 are available for the 484 km 2 area in this study. We analyzed these data using the Small Baseline Subset (SBAS) time-series technique to assess the surface deformation related to the activation of landslides. We observed up to ±17 mm/year of LOS velocity deformation rates, which were projected along the local steepest slope and resulted in velocity rates of up to −63 mm/year. The obtained rates indicate very slow movement of the deep-seated landslides during the observation time. We also compared these movements with precipitation and earthquake records. The results suggest that the deformation peaks correlate with rainfall in the 3 preceding months and with an earthquake event. Overall, the results of this study indicated the great potential of L-band InSAR time series analysis for OPEN ACCESS Remote Sens. 2015, 7 8974 efficient spatiotemporal identification and monitoring of slope activations in this region of high landslide activity in Southern Kyrgyzstan.

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A multi‐temporal InSAR method incorporating both persistent scatterer and small baseline approaches

Cited by 1,046 publications

References 14 publications

Geodetic and geological evidence of active tectonics in south-western Sicily (Italy)

Geodetic and geological evidence of active tectonics in south-western Sicily (Italy)

Efficient global optimization of reservoir geomechanical parameters based on synthetic aperture radar-derived ground displacements

ALOS/PALSAR InSAR Time-Series Analysis for Detecting Very Slow-Moving Landslides in Southern Kyrgyzstan

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