Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/nhessd-2-7807-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
22 Dec 2014
Review status
This discussion paper is a preprint. It has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). The revised manuscript was not accepted.
Earthquake-induced deformation estimation of earth dam by multitemporal SAR interferometry: the Mornos Dam case (Central Greece)
S. Neokosmidis1, P. Elias2, I. Parcharidis1, and P. Briole3 1Harokopio University of Athens, Department of Geography, Athens, Greece
2National Observatory of Athens, Institute of Astronomy, Astrophysics, Space Applications and Remote Sensing, Athens, Greece
3Ecole Normale Superieure, Department of Geosciences, France
Abstract. The scope of this paper concerns the investigation of Mornos earth Dam (Central Greece) deformation induced by major earthquake events occur in the broader area. For this purpose multitemporal SAR interferometry method was used. Specifically, the technique of Differential Interferometry SBAS and for the time series analysis the Singular Value Decomposition algorithm were applied. The data used were ascending and descending acquisitions of AMI / ERS-1 & 2 and ASAR / ENVISAT scenes covering the period 1993–2010. Five very strong seismic events with epicenters close to the dam, at the same period, were consider as potential sources of deformation. Lake level changes were also considered as an additional factor of induced deformation. Results show a maximum deformation rate of 10 cm along the line of sight for the whole period. Although the observed deformation appears to be due to changes in water level following a particular pattern, there are discontinuous over time which coincide with specific seismic events.

Citation: Neokosmidis, S., Elias, P., Parcharidis, I., and Briole, P.: Earthquake-induced deformation estimation of earth dam by multitemporal SAR interferometry: the Mornos Dam case (Central Greece), Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhessd-2-7807-2014, 2014.
S. Neokosmidis et al.
S. Neokosmidis et al.

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