Land subsidence in southwest Cyprus revealed from C-band radar interferometry

Pantelis Michalis; Anthi Giourou; Betty Charalampopoulou; Zhenhong Li; Yongsheng Li

doi:10.1117/12.2070265

12 August 2014 Land subsidence in southwest Cyprus revealed from C-band radar interferometry

Pantelis Michalis, Anthi Giourou, Betty Charalampopoulou, Zhenhong Li, Yongsheng Li

Proceedings Volume 9229, Second International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2014); 92290G (2014) https://doi.org/10.1117/12.2070265
Event: Second International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2014), 2014, Paphos, Cyprus

Abstract

Land subsidence is a major worldwide hazard, and causes many problems including: damage to public facilities such as bridges, roads, railways, electric power lines, underground pipes; damage to private and public buildings; and in some cases of low-lying land, can increase the risk of coastal flooding from storm surges and rising sea-levels. The island of Cyprus is famous for its complex geology, particularly in the southwest part of the island. Deposits of massive breccias (melange) are widely exposed in the Paphos District situated between the Troodos Mountains and the sea. These deposits are rich in clay minerals that are prone to landslide phenomena. With its global coverage and all-weather imaging capability, Interferometric SAR (InSAR) is revolutionizing our ability to image the Earth’s surface and the evolution of its shape over time. In this paper, an advanced InSAR time series technique, InSAR TS + AEM, has been employed to analysed C-band ERS and Envisat data collected over southwest Cyprus during the period from 1992 to 2010. Our InSAR time series results suggest that: (1) a total number of 274,619 coherent pixels with a density of 46 points per squared km were detected in the area of interest; and (2) clear surface displacements can be observed in several areas. The combination of archived ESA SAR datasets allows a long record (~18 years) of historic deformation to be measured over a large region. Ultimately this should help inform land managers in assessing land subsidence and planning appropriate remedial measures.

Citation Download Citation

Pantelis Michalis, Anthi Giourou, Betty Charalampopoulou, Zhenhong Li, and Yongsheng Li "Land subsidence in southwest Cyprus revealed from C-band radar interferometry", Proc. SPIE 9229, Second International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2014), 92290G (12 August 2014); https://doi.org/10.1117/12.2070265

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