132327 20241125101156.0 doi 10.1007/s13320-023-0696-7 sideral 137485 ART-2023-137485 eng Sevillano, Pascual Universidad de Zaragoza (orcid)0000-0002-4094-3826 Vertical displacement measurement in a slow-moving sinkhole using BOTDA 2023 Access copy available to the general public Unrestricted The effectiveness of monitoring and early-warning systems for ground deformation phenomena, such as sinkholes, depends on their ability to accurately resolve the ongoing ground displacement and detect the subtle deformation preceding catastrophic failures. Sagging sinkholes with a slow subsidence rate and diffuse edges pose a significant challenge for subsidence monitoring due to the low deformation rates and limited lateral strain gradients. In this work, we satisfactorily illustrate the practicality of the Brillouin optical time domain analysis (BOTDA) to measure the spatial-temporal patterns of the vertical displacement in such challenging slow-moving sagging sinkholes. To assess the performance of the approach, we compare the strain recorded by the distributed optical fiber sensor with the vertical displacement measured by high-precision leveling. The results show a good spatial correlation with the ability to identify the maximum subsidence point. There is also a good temporal correlation with the detection of an acceleration phase in the subsidence associated with a flood event. info:eu-repo/grantAgreement/ES/AEI/PID2021-123189NB-I00 info:eu-repo/grantAgreement/ES/DGA-FSE/T20-23R info:eu-repo/grantAgreement/ES/MICINN/PRE2018-084240 info:eu-repo/grantAgreement/ES/MINECO/CGL2017-85045-P info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 5.0 2023 OPTICS 19 / 119 = 0.16 2023 Q1 T1 INSTRUMENTS & INSTRUMENTATION 12 / 76 = 0.158 2023 Q1 T1 0.739 2023 Electronic, Optical and Magnetic Materials 2023 Q2 Atomic and Molecular Physics, and Optics 2023 Q2 8.6 2023 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Preciado-Garbayo, Javier (orcid)0000-0001-5898-8777 Sevil, Jorge Universidad de Zaragoza (orcid)0000-0002-0068-4532 Gutiérrez, Francisco Universidad de Zaragoza (orcid)0000-0002-5407-940X Martínez, Juan J. Martín-López, Sonia González-Herráez, Miguel 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 2000 427 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Geodinámica Externa 14, 1 (2023), 240122 [17 pp.] Photonic sens. Photonic Sensors 1674-9251 7728820 http://zaguan.unizar.es/record/132327/files/texto_completo.pdf Versión publicada 2313764 http://zaguan.unizar.es/record/132327/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:132327 articulos driver 2024-11-22-12:09:19 ARTICLE