Abstract
In recent decades land subsidence and its associated fissures have been observed in many plain aquifers of Iran. Knowledge of the deformation field in groundwater basins is of basic interest for understanding the cause and mechanism of deformation phenomenon, and for mitigating hazard related to it. In this paper the result of Envisat InSAR time-series analysis for monitoring land subsidence in Mahyar Plain, Central Iran, is presented. Long-term extraction of groundwater, which started in 1970 with the development of agriculture in this area, has caused substantial subsidence and formation of many earth fissures in Mahyar. Our analysis indicates significant subsidence bowl south of Mahyar plain with an elliptical pattern directed northwest–southeast along the axis of the plain. The velocity map obtained by the time-series analysis of InSAR data shows a maximum subsidence velocity of ∼9 cm/year in the line of sight from the ground to the satellite in the year 2003–2006.
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Acknowledgments
Envisat data used in the study were provided by the European Space Agency (ESA) through proposal AOALO3740. The authors are grateful to an anonymous reviewer for a number of suggestions, which improved the quality of the paper.
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Davoodijam, M., Motagh, M., Momeni, M. (2015). Land Subsidence in Mahyar Plain, Central Iran, Investigated Using Envisat SAR Data. In: Kutterer, H., Seitz, F., Alkhatib, H., Schmidt, M. (eds) The 1st International Workshop on the Quality of Geodetic Observation and Monitoring Systems (QuGOMS'11). International Association of Geodesy Symposia, vol 140. Springer, Cham. https://doi.org/10.1007/978-3-319-10828-5_18
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DOI: https://doi.org/10.1007/978-3-319-10828-5_18
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