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| Titel |
Railway deformation detected by DInSAR over active sinkholes in the Ebro Valley evaporite karst, Spain |
| VerfasserIn |
J. P. Galve, C. Castañeda, F. Gutierrez |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 15, no. 11 ; Nr. 15, no. 11 (2015-11-02), S.2439-2448 |
| Datensatznummer |
250119769
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| Publikation (Nr.) |
 copernicus.org/nhess-15-2439-2015.pdf |
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| Zusammenfassung |
| Subsidence was measured for the first time on railway tracks in the central
sector of Ebro Valley (NE Spain) using Differential Synthetic Aperture Radar
Interferometry (DInSAR) techniques. This area is affected by evaporite karst
and the analysed railway corridors traverse active sinkholes that produce
deformations in these infrastructures. One of the railway tracks affected by
slight settlements is the Madrid–Barcelona high-speed line, a form of
transport infrastructure highly vulnerable to ground deformation processes.
Our analysis based on DInSAR measurements and geomorphological surveys
indicates that this line shows dissolution-induced subsidence and compaction
of anthropogenic deposits (infills and embankments). Significant
sinkhole-related subsidence was also measured by DInSAR techniques on the
Castejón–Zaragoza conventional railway line. This study demonstrates
that DInSAR velocity maps, coupled with detailed geomorphological surveys,
may help in the identification of the railway track sections that are
affected by active subsidence. |
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