Monitoring land subsidence induced by tectonic activity and groundwater extraction in the eastern Gediz River Basin (Türkiye) using Sentinel-1 observations
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Título: | Monitoring land subsidence induced by tectonic activity and groundwater extraction in the eastern Gediz River Basin (Türkiye) using Sentinel-1 observations |
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Autor/es: | Navarro-Hernández, María Inés | Tomás, Roberto | Valdes-Abellan, Javier | Bru, Guadalupe | Ezquerro Martín, Pablo | Guardiola-Albert, Carolina | Elçi, Alper | Batkan, Elif Aysu | Caylak, Baris | Ören, Ali Hakan | Meisina, Claudia | Pedretti, Laura | Rygus, Michelle |
Grupo/s de investigación o GITE: | Ingeniería del Terreno y sus Estructuras (InTerEs) | Ingeniería Hidráulica y Ambiental (INGHA) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería Civil |
Palabras clave: | Land subsidence | Groundwater extraction | Alaşehir-Sarıgöl sub-basin | P-SBAS | Independent Component Analysis | Geohazard Exploitation Platform |
Fecha de publicación: | 2-nov-2023 |
Editor: | Elsevier |
Cita bibliográfica: | Engineering Geology. 2023, 327: 107343. https://doi.org/10.1016/j.enggeo.2023.107343 |
Resumen: | Alaşehir-Sarıgöl sub-basin (ASSB) in Türkiye faces severe water stress mainly due to intensive agricultural irrigation. This has led to declining groundwater levels, aquifer compaction, and subsequent land subsidence. This study aims to evaluate the roles of tectonic activity and groundwater withdrawal in land-subsidence and investigate additional factors like faults and soft soil thickness. The P-SBAS algorithm was applied, using 98 and 123 Sentinel-1 SAR images in ascending and descending orbits, respectively, from 2016 to 2020. Independent Component Analysis separated long-term displacements from seasonal variations in the InSAR time series data. InSAR analysis showed displacement rates up to −6.40 cm/year. Results reveal a direct correlation between InSAR displacement and soft soil thickness, highlighting aquitard layer compaction due to groundwater withdrawal and piezometric head depletion as the primary causes of land subsidence. It was not possible to disentangle the multi-year displacements with different rates, i.e., to isolate the displacements caused by tectonic activity from displacements due to the soft soil compaction induced by groundwater withdrawal. Nonetheless, the analysis identified two spatiotemporal displacement trends: one linked to long-term, linear plastic compaction of the aquitard due to groundwater withdrawal and the other involving long-term displacements with seasonal rebounds caused by yearly water level fluctuations. |
Patrocinador/es: | This research is funded by the PRIMA programme supported by the European Union under grant agreement No 1924, project RESERVOIR. The researchers from the University of Alicante are also supported by the ESA-MOST China DRAGON-5 project with ref. 59339. |
URI: | http://hdl.handle.net/10045/138185 |
ISSN: | 0013-7952 (Print) | 1872-6917 (Online) |
DOI: | 10.1016/j.enggeo.2023.107343 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.enggeo.2023.107343 |
Aparece en las colecciones: | INV - INTERES - Artículos de Revistas INV - IngHA - Artículos de Revistas |
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Navarro-Hernandez_etal_2023_EngGeol.pdf | 16,36 MB | Adobe PDF | Abrir Vista previa | |
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