Detection of subsidence in the Ebro Delta plain using DInSAR: analysis of the measurements and the factors that control the phenomenon
2020
Abstract. The Ebro Delta is a highly vulnerable Mediterranean
coastal ecosystems located on the northern Mediterranean coast of Spain.
Determining its subsidence rate and sources is a key issue for the present
and future management of this area. Differential Interferometry Synthetic
Aperture Radar (DInSAR) compared with the contribution to subsidence of the
compaction of delta's sediments and the lithosphere's deformation, indicated
a general Ebro Delta subsidence ranging from to ∼ 2.3 mm yr −1 . Subsidence is determined to be mainly driven by natural
sediment compaction ( ∼ 76 %), with areas strongly influenced
by local processes associated to their sedimentary distribution and
composition, or external factors such as sea level rise.
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