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Monitoring ground deformation in the settlement of Larissa in Central Greece by implementing SAR interferometry

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  • Falah Fakhri
  • Risto Kalliola

Abstract

The settlement of Larissa in the eastern part of Central Greece suffers from continued land deformation as evidenced by ground fissures, sinkholes and subsidence. We used three different interferometric synthetic aperture radar (InSAR) techniques to monitor ground deformation dynamics in the study area. Spatial patterns of short-term changes (35 days) were studied using conventional InSAR, longer-term changes (13 years) by interferometric stacking, and change dynamics of single objects was assessed by permanent scatterer technique. The results indicate co-occurring subsidence and uplift processes in the region with their average annual change rates reaching up to −2.9 and 6.6 mm a −1 , respectively. Some of these changes may be attributed to tectonic fault movements, but there are also other mechanisms of continued ground deformation in the region, particularly the swelling and shrinking of expansive soils and human-induced changes in the groundwater level. Copyright Springer Science+Business Media Dordrecht 2015

Suggested Citation

  • Falah Fakhri & Risto Kalliola, 2015. "Monitoring ground deformation in the settlement of Larissa in Central Greece by implementing SAR interferometry," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 78(2), pages 1429-1445, September.
    • Handle: RePEc:spr:nathaz:v:78:y:2015:i:2:p:1429-1445
    DOI: 10.1007/s11069-015-1779-6
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    References listed on IDEAS

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    1. Riccardo Caputo & Bruno Helly & Spyros Pavlides & Gerassimos Papadopoulos, 2006. "Archaeo- and palaeoseismological investigations in Northern Thessaly (Greece): Insights for the seismic potential of the region," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 39(2), pages 195-212, October.
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