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• Elias, P
• Kontoes, C
• Papoutsis, I
• Kotsis, I
• Marinou, A
• Paradissis, D
• Sakellariou, D
• [+] on Google Scholar
• Elias, P
• Kontoes, C
• Papoutsis, I
• Kotsis, I
• Marinou, A
• Paradissis, D
• Sakellariou, D
• [+] on PubMed
• Elias, P
• Kontoes, C
• Papoutsis, I
• Kotsis, I
• Marinou, A
• Paradissis, D
• Sakellariou, D

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Sensors 2009, 9(1), 46-55; doi:10.3390/s90100046

Article

Permanent Scatterer InSAR Analysis and Validation in the Gulf of Corinth

Panagiotis Elias ^1,* , Charalabos Kontoes ¹ , Ioannis Papoutsis ² , Ioannis Kotsis ² , Aggeliki Marinou ² , Dimitris Paradissis ²  and Dimitris Sakellariou ³

¹ National Observatory of Athens, Institute of Space Applications and Remote Sensing, Vas. Pavlou and Metaxa str., 15236, Palaia Penteli, Greece ² Higher Geodesy Laboratory and Dionyssos Satellite Observatory, National Technical University of Athens, Iroon Polytexneiou 9, 15780, Zografou, Greece ³ 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

(This article belongs to the Section Remote Sensors)

Download PDF Full-Text [536 KB, uploaded 1 April 2009 09:04 CEST]

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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