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Railway deformation detected by DInSAR over active sinkholes in the Ebro Valley evaporite karst, Spain

AuthorsGalve, Jorge Pedro; Castañeda del Álamo, Carmen ; Gutiérrez, Francisco
Issue DateJun-2015
PublisherEuropean Geosciences Union
Copernicus Publications
CitationGalve JP, Castañeda C, Gutiérrez F. Railway deformation detected by DInSAR over active sinkholes in the Ebro Valley evaporite karst, Spain. Natural Hazards and Earth System Sciences Discussions 3: 3967-3981 (2015)
AbstractPreviously not measured subsidence on railway tracks was detected using DInSAR displacement maps produced for the central sector of Ebro Valley (NE Spain). This area is affected by evaporite karst and the analyzed railway corridors traverse active sinkholes that produce deformations in these infrastructures. One of the railway tracks affected by slight settlements corresponds to the Madrid–Barcelona high-speed line, a transport infrastructure highly vulnerable to ground deformation processes. Our analysis based on DInSAR measurements and geomorphological surveys indicate that this line show dissolution-induced subsidence and compaction of anthropogenic deposits (infills and embankments). By using DInSAR techniques, it was also measured the significant subsidence related to the activity of sinkholes in the Castejón–Zaragoza conventional railway line. Thus, this study demonstrate that DInSAR velocity maps coupled with detailed geomorphological surveys may help in the identification of the sectors of railway tracks that may compromise the safety of travellers.
Description15 Pags.- 4 Figs.
Publisher version (URL)http://dx.doi.org/10.5194/nhessd-3-3967-2015
Appears in Collections:(EEAD) Artículos
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