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(Article of periodic en Anglais - 2012)

Document title

Land subsidence along the Ionian coast of SE Sicily (Italy), detection and analysis via Small Baseline Subset (SBAS) multitemporal differential SAR interferometry

Authors(s) and Affiliation(s)

CANOVA F. (1) ; TOLOMEI C. (2) ; SALVI S. (2) ; TOSCANI G. (1) ; SENO S. (1) ;
(1) Dip. di Scienze della Terra e dell'Ambiente, Univ. degli Studi, Pavia, ITALIE
(2) Istituto Nazionale di Geofisica e Vulcanologia, Roma, ITALIE

Abstract

The paper presents the results of a multi-temporal, differential interferometric synthetic aperture radar (DInSAR) analysis aiming to identify active surface deformation phenomena in south-eastern Sicily. The Small BAseline Subset (SBAS) multitemporal DInSAR technique was used to calculate mean ground velocity maps and displacement time series from a large data set of European Remote Sensing Satellites (ERS 1–2) images spanning the time period 1992–2000. The reliability of the DInSAR results was tested calculating the EastSAR and UpSAR values over 2 permanent global positioning system (GPS) stations in the area, and comparing them with the EastGPS and UpGPS values. Four main subsiding areas have been identified, corresponding with the towns of Augusta, Siracusa, Priolo, and Villasmundo. The examination of velocity profiles, time series, and geological data allows to relate all the detected deformation patterns primarily to groundwater over-exploitation. A multi-dimensional interpolation with kriging was performed to obtain a field subsidence map. A first-order elastic deformation model was used to simulate the peculiar features of the Villasmundo subsidence

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2012, vol. 37, no3 [pp. 273-286]

Bibliographic references : 2 p.

Collation : 10 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2238

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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