Application of multi-temporal differential interferometry to slope instability detection in urban/peri-urban areas

Bovenga, F.; Nutricato, R.; Refice, Alberto; Wąsowski, J.

doi:10.1016/j.enggeo.2006.09.015

Cited by 81 publications

(34 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The approach has been demonstrated to give good results in several instances, e.g. in the study of small-scale phenomena such as landslides in low-urbanization settings (Bovenga et al 2006). Here, we applied the same approach to increase the number of detected PS on the urban center of Lesina Marina, which has a size of about 1 km Â 1 km.…”

Section: Dataset Satellite Data and Processingmentioning

confidence: 99%

“…4, as a function of the northings UTM coordinate. In the figure, PS velocities' error bars are derived from estimates of the phase dispersion (Bovenga et al 2006). Uncertainties on leveling mean velocities can only be inferred from nominal accuracy values of each of the two measurements, and are negligible compared to the former.…”

Section: Comparison With Leveling Datamentioning

confidence: 99%

See 1 more Smart Citation

Investigating uplift in Lesina Marina (Southern Italy) with the aid of persistent scatterer SAR interferometry and in situ measurements

et al. 2016

Self Cite

View full text Add to dashboard Cite

We apply persistent scatterer interferometry (PSI) techniques to synthetic aperture radar (SAR) data from ERS and ENVISAT satellites on the Lesina Marina area, a coastal tourist village in Apulia, Southern Italy, where the excavation of a canal exposed grey micro-and meso-crystalline gypsum which is now showing a high density of cavities and sinkholes due to gravitational collapse processes. We observe PS objects undergoing displacements, along the sensor line of sight, forming the same relatively smooth pattern in all the processed data stacks. Vertical displacement rates, derived through integration of ascending and descending geometries, reach about 4 mm/year on locations adjacent to the canal, gently decreasing towards the western end of the built-up area. High-precision leveling measurements, performed in 1999 and 2010, reveal a substantial agreement with the ENVISAT PSI data, taking into account a small bias due to the choice of the leveling reference point. The dataset, thus validated, suggests the presence of an uplift phenomenon going on steadily for the entire timespan covered by the SAR observations (1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)). These observations, supported by petrographic data and in situ investigations, seem only in part compatible with a residual diapirism, and hint instead to more complex processes, such as a combination of diapirism and the hydration of the residual anhydrite in the core of the gypsum mass. These results confirm the importance of the integration between in situ, geologic and geophysical, remotely sensed investigations, as the latter often represent an essential tool to infer whether a given phenomenon, which can be hypothesized by the former, is presently under development.

show abstract

Section: Dataset Satellite Data and Processingmentioning

confidence: 99%

Section: Comparison With Leveling Datamentioning

confidence: 99%

Investigating uplift in Lesina Marina (Southern Italy) with the aid of persistent scatterer SAR interferometry and in situ measurements

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…This Persistent Scatterers Interferometry-like algorithm (cf., Ferretti et al [12]), originally developed for detection and monitoring of radar targets in non-or scarcely urbanized areas [3,4], has recently been updated to guarantee proper processing of high resolution X-band data from the new generation radar sensors such as CSK and to increase its application flexibility also in case of densely urbanized areas [5]. The quality of SPINUA processing products has already been tested and confirmed in different types of applications.…”

Section: Mti Processingmentioning

confidence: 99%

High resolution satellite multi-temporal interferometry for monitoring infrastructure instability hazards

Wąsowski

Bovenga

Nutricato

et al. 2017

Innov. Infrastruct. Solut.

View full text Add to dashboard Cite

Advanced remote sensing techniques are now capable of delivering more rapidly high quality information that is sufficiently detailed (and cost-effective) for many engineering applications. Here we focus on synthetic aperture radar (SAR), multi-temporal interferometry (MTI). With radar satellites periodically re-visiting the same area, MTI provides information on distance changes between the on-board radar sensor and the targets on the ground (e.g., human-made structures such as buildings, roads and other infrastructure). The detected distance changes are thus interpreted as evidence of ground and/or structure instability. In settings with limited vegetation cover, MTI can deliver very precise (mm resolution), spatially dense information (from hundreds to thousands measurement points/km 2 ) on slow (mm-cm/year) deformations affecting the ground and engineering structures. Radar satellites offer wide-area coverage (thousands km 2 ) and, with the sensors that actively emit electromagnetic radiation and thus can ''see'' through the clouds, one can obtain deformation measurements even under bad weather conditions. We illustrate the potential of high resolution MTI and explain what this technique can deliver to assist in infrastructure instability hazard assessment. This is done by presenting selected examples of MTI applied to monitor post-construction behavior of engineering structures. The examples are from Italy and include: an earthfill dam, an off-shore vertical breakwater built to protect an oil terminal, city buildings and a highway. We also stress that the current approach to the assessment of instability hazard can be transformed by capitalizing more on the presently underexploited advantage of the MTI technique, i.e., the capability to provide regularly spatially dense quantitative information for large areas where engineering infrastructure may currently be unaffected by instability, but where the terrain and infrastructure history (e.g., aging) may indicate potential for future failures.

show abstract

“…According to this statement, we used the heights computed by processing the Spotlight dataset as reference values for the following analysis, while the result coming from the Stripmap dataset was used to cross-validate the PSI processing. PSI processing was performed through the SPINUA (Stable Point INterferometry over Unurbanised Areas) algorithm [Bovenga et al, 2004;Bovenga et al, 2006]. The processing chain is the result of a joint effort of the Remote Sensing Group of the Department of Physics at Politecnico di Bari and the ISSIA-CNR institute of Bari.…”

Section: Multi-temporal Interferometric Analysis For Height Measurementsmentioning

confidence: 99%

On the use of COSMO/SkyMed data and Weather Models for interferometric DEM generation

Nitti

Bovenga

Nutricato

et al. 2013

European Journal of Remote Sensing

View full text Add to dashboard Cite

This work experiments the potentialities of COSMO/SkyMed (CSK) data in providing interferometric Digital Elevation Model (DEM). We processed a stack of CSK data for measuring with meter accuracy the ground elevation on the available coherent targets, and used these values to check the accuracy of DEMs derived from 5 tandem-like CSK pairs. In order to suppress the atmospheric signal we experimented a classical spatial filtering of the differential phase as well as the use of numerical weather prediction (NWP) model RAMS. Tandem-like pairs with normal baselines higher than 300 m allows to derive DEMs fulfilling the HRTI Level 3 specifications on the relative vertical accuracy, while the use of NWP models still seems unfeasible especially for X-band.

show abstract

Application of multi-temporal differential interferometry to slope instability detection in urban/peri-urban areas

Cited by 81 publications

References 17 publications

Investigating uplift in Lesina Marina (Southern Italy) with the aid of persistent scatterer SAR interferometry and in situ measurements

Investigating uplift in Lesina Marina (Southern Italy) with the aid of persistent scatterer SAR interferometry and in situ measurements

High resolution satellite multi-temporal interferometry for monitoring infrastructure instability hazards

On the use of COSMO/SkyMed data and Weather Models for interferometric DEM generation

Contact Info

Product

Resources

About