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Permanent Scatterer InSAR Analysis and Validation in the Gulf of Corinth
National Observatory of Athens, Institute of Space Applications and Remote Sensing, Vas. Pavlou and Metaxa str., 15236, Palaia Penteli, Greece
Higher Geodesy Laboratory and Dionyssos Satellite Observatory, National Technical University of Athens, Iroon Polytexneiou 9, 15780, Zografou, Greece
Hellenic Center for Marine Research, Hellinikon, 16604, Athens, Greece
* Author to whom correspondence should be addressed.
Received: 7 November 2008; in revised form: 10 December 2008 / Accepted: 24 December 2008 / Published: 5 January 2009
Abstract: The Permanent Scatterers Interferometric SAR technique (PSInSAR) is a method that accurately estimates the near vertical terrain deformation rates, of the order of ~1 mm year-1, overcoming the physical and technical restrictions of classic InSAR. In this paper the method is strengthened by creating a robust processing chain, incorporating PSInSAR analysis together with algorithmic adaptations for Permanent Scatterer Candidates (PSCs) and Permanent Scatterers (PSs) selection. The processing chain, called PerSePHONE, was applied and validated in the geophysically active area of the Gulf of Corinth. The analysis indicated a clear subsidence trend in the north-eastern part of the gulf, with the maximum deformation of ~2.5 mm year-1 occurring in the region north of the Gulf of Alkyonides. The validity of the results was assessed against geophysical/geological and geodetic studies conducted in the area, which include continuous seismic profiling data and GPS height measurements. All these observations converge to the same deformation pattern as the one derived by the PSInSAR technique.
Keywords: Ground subsidence; SAR Interferometry; Permanent Scatterer; GPS
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Elias, P.; Kontoes, C.; Papoutsis, I.; Kotsis, I.; Marinou, A.; Paradissis, D.; Sakellariou, D. Permanent Scatterer InSAR Analysis and Validation in the Gulf of Corinth. Sensors 2009, 9, 46-55.
Elias P, Kontoes C, Papoutsis I, Kotsis I, Marinou A, Paradissis D, Sakellariou D. Permanent Scatterer InSAR Analysis and Validation in the Gulf of Corinth. Sensors. 2009; 9(1):46-55.
Elias, Panagiotis; Kontoes, Charalabos; Papoutsis, Ioannis; Kotsis, Ioannis; Marinou, Aggeliki; Paradissis, Dimitris; Sakellariou, Dimitris. 2009. "Permanent Scatterer InSAR Analysis and Validation in the Gulf of Corinth." Sensors 9, no. 1: 46-55.