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Título: | Seismic Monitoring with Distributed Acoustic Sensing from the Near-Surface to the Deep Oceans |
Autor: | Fernández-Ruiz, María R.; Martins, Hugo F. CSIC ORCID CVN ; Williams, Ethan F.; Becerril, Carlos; Magalhães, Regina; Costa, Luis; Martín-López, Sonia CSIC ORCID; Jia, Zhensheng; Zhan, Zhongwen; González-Herráez, Miguel CSIC ORCID | Palabras clave: | Distributed acoustic sensing Fiber optics sensors Optical time domain reflectometry Rayleigh scattering Remote sensing and sensors Seismicity Velocimetry |
Fecha de publicación: | 16-nov-2021 | Editor: | Institute of Electrical and Electronics Engineers | Citación: | Journal of Lightwave Technology 40: 1453-1463 (2022) | Resumen: | Distributed acoustic sensing (DAS) delivers real-time observation ofphysical perturbations such as vibrations or strain variations in conventional optical fibers with high sensitivity. The high density of sensing points and large network footprint provided by a single DAS system, along with the availability of a vast optical fiber network already deployed both in land and in oceanic regions, contrast with the high deployment and maintenance cost of conventional instrumentation networks for seismology. This situation has triggered a rapid growth of DAS deployments for seismic monitoring in recent years. Photonic engineers and geophysicists have joined efforts to prove the value of optical fibers as distributed seismometers, which has resulted in a wide panoply of tests demonstrating diverse applicability across the geosciences. For example, DAS has been successfully applied recording local to teleseismic earthquakes, monitoring glacial icequakes, and observing oceanographic phenomena at the sea floor. Most of the realized tests have been performed using commercially available optical fiber interrogators based on phase-sensitive optical time-domain reflectometry. Among them, DAS based on chirped pulse distributed acoustic sensing have provided optimized performance in terms of both range and sensitivity, particularly at low frequencies. In this communication, we provide a comprehensive review of the current situation of DAS for seismology applications, focusing on near surface monitoring, where already deployed optical fibers can be repurposed as sensor networks. | Descripción: | 11 pags., 8 figs. | Versión del editor: | http://dx.doi.org/10.1109/JLT.2021.3128138 | URI: | http://hdl.handle.net/10261/277917 | DOI: | 10.1109/JLT.2021.3128138 | Identificadores: | doi: 10.1109/JLT.2021.3128138 issn: 1558-2213 |
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Seismic Monitoring.pdf | Artículo principal | 3,01 MB | Adobe PDF | Visualizar/Abrir |
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