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Complex Surface Displacements above the Storage Cavern Field at Epe, NW-Germany, Observed by Multi-Temporal SAR-Interferometry

Even, Markus; Westerhaus, Malte; Simon, Verena

Abstract:
The storage cavern field at Epe has been brined out of a salt deposit belonging to the lower Rhine salt flat, which extends under the surface of the North German lowlands and part of the Netherlands. Cavern convergence and operational pressure changes cause surface displacements that have been studied for this work with the help of SAR interferometry (InSAR) using distributed and persistent scatterers. Vertical and East-West movements have been determined based on Sentinel-1 data from ascending and descending orbit. Simple geophysical modeling is used to support InSAR processing and helps to interpret the observations. In particular, an approach is presented that allows to relate the deposit pressures with the observed surface displacements. Seasonal movements occurring over a fen situated over the western part of the storage site further complicate the analysis. Findings are validated with ground truth from levelling and groundwater level measurements.

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Verlagsausgabe §
DOI: 10.5445/IR/1000129580
Veröffentlicht am 10.02.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Geodätisches Institut (GIK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2072-4292
KITopen-ID: 1000129580
Erschienen in Remote sensing
Verlag MDPI
Band 12
Heft 20
Seiten Art.-Nr. 3348
Vorab online veröffentlicht am 14.10.2020
Schlagwörter satellite geodesy; radar interferometry; persistent scatterers; distributed scatterers; orbit combination; Sentinel-1; cavern field; salt deposit; geophysical modeling
Nachgewiesen in Web of Science
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Scopus
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