Mapping subsurface defects and surface deformation along the artificial levee of the Lower Tisza River, Hungary

Diaa Sheishah, Tímea Kiss, Tibor Borza, Károly Fiala, Péter Kozák, Enas Abdelsamei, Csaba Tóth, Gyula Grenerczy, Dávid Gergely Páll and György Sipos ()
Additional contact information
Diaa Sheishah: University of Szeged
Tímea Kiss: University of Szeged
Tibor Borza: Lower Tisza District Water Directorate
Károly Fiala: Lower Tisza District Water Directorate
Péter Kozák: Lower Tisza District Water Directorate
Enas Abdelsamei: University of Szeged
Csaba Tóth: Budapest University of Technology and Economics
Gyula Grenerczy: Geo-Sentinel Ltd.
Dávid Gergely Páll: University of Szeged
György Sipos: University of Szeged

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2023, vol. 117, issue 2, No 19, 1647-1671

Abstract: Abstract Artificial levees along alluvial rivers are major components of flood-risk mitigation. This is especially true in the case of Hungary, where more than one-third of the country is threatened by floods and protected by an over 4200-km-long levee system. Most of such levees were built in the nineteenth century. Since then, several natural and anthropogenic processes, such as compaction and erosion, might have contributed to these earth structures' slow but steady deformation. Meanwhile, as relevant construction works were scarcely documented, the structure and composition of artificial levees are not well known. Therefore, the present analysis mapped structural differences, possible compositional deficiencies, and sections where elevation decrease is significant along a 40-km section of the Lower Tisza River. Investigations were conducted using real-time kinematic GPS and ground-penetrating radar (GPR). Onsite data acquisition was complemented with an analysis using a Persistent Scatterer Synthetic Aperture Radar to assess general surface deformation. GPR profiles showed several anomalies, including structural and compositional discontinuities and local features. The GPR penetration depth varied between 3 and 4 m. According to height measurements, the mean elevation of the levee crown decreased by 8 cm in 40 years. However, the elevation decrease reached up to 30 cm at some locations. Sections affected by structural anomalies, compositional changes, and increased surface subsidence are especially sensitive to floods when measurement results are compared with flood phenomena archives.

Keywords: Tisza River; Levee health; Ground-penetrating radar; Surface deformation; Flood-risk (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s11069-023-05922-1

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