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Long-range fiber-optic earthquake sensing by active phase noise cancellation
We present a long-range fiber-optic environmental deformation sensor based on active phase noise cancellation (PNC) in metrological frequency dissemination. PNC sensing exploits recordings of a compensation frequency that is commonly discarded. Without the need for dedicated measurement devices, it...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10460440/ https://www.ncbi.nlm.nih.gov/pubmed/37633995 http://dx.doi.org/10.1038/s41598-023-41161-x |
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author | Noe, Sebastian Husmann, Dominik Müller, Nils Morel, Jacques Fichtner, Andreas |
author_facet | Noe, Sebastian Husmann, Dominik Müller, Nils Morel, Jacques Fichtner, Andreas |
author_sort | Noe, Sebastian |
collection | PubMed |
description | We present a long-range fiber-optic environmental deformation sensor based on active phase noise cancellation (PNC) in metrological frequency dissemination. PNC sensing exploits recordings of a compensation frequency that is commonly discarded. Without the need for dedicated measurement devices, it operates synchronously with metrological services, suggesting that existing phase-stabilized metrological networks can be co-used effortlessly as environmental sensors. The compatibility of PNC sensing with inline amplification enables the interrogation of cables with lengths beyond 1000 km, making it a potential contributor to earthquake detection and early warning in the oceans. Using spectral-element wavefield simulations that accurately account for complex cable geometry, we compare observed and computed recordings of the compensation frequency for a magnitude 3.9 earthquake in south-eastern France and a 123 km fiber link between Bern and Basel, Switzerland. The match in both phase and amplitude indicates that PNC sensing can be used quantitatively, for example, in earthquake detection and characterization. |
format | Online Article Text |
id | pubmed-10460440 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-104604402023-08-28 Long-range fiber-optic earthquake sensing by active phase noise cancellation Noe, Sebastian Husmann, Dominik Müller, Nils Morel, Jacques Fichtner, Andreas Sci Rep Article We present a long-range fiber-optic environmental deformation sensor based on active phase noise cancellation (PNC) in metrological frequency dissemination. PNC sensing exploits recordings of a compensation frequency that is commonly discarded. Without the need for dedicated measurement devices, it operates synchronously with metrological services, suggesting that existing phase-stabilized metrological networks can be co-used effortlessly as environmental sensors. The compatibility of PNC sensing with inline amplification enables the interrogation of cables with lengths beyond 1000 km, making it a potential contributor to earthquake detection and early warning in the oceans. Using spectral-element wavefield simulations that accurately account for complex cable geometry, we compare observed and computed recordings of the compensation frequency for a magnitude 3.9 earthquake in south-eastern France and a 123 km fiber link between Bern and Basel, Switzerland. The match in both phase and amplitude indicates that PNC sensing can be used quantitatively, for example, in earthquake detection and characterization. Nature Publishing Group UK 2023-08-26 /pmc/articles/PMC10460440/ /pubmed/37633995 http://dx.doi.org/10.1038/s41598-023-41161-x Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Noe, Sebastian Husmann, Dominik Müller, Nils Morel, Jacques Fichtner, Andreas Long-range fiber-optic earthquake sensing by active phase noise cancellation |
title | Long-range fiber-optic earthquake sensing by active phase noise cancellation |
title_full | Long-range fiber-optic earthquake sensing by active phase noise cancellation |
title_fullStr | Long-range fiber-optic earthquake sensing by active phase noise cancellation |
title_full_unstemmed | Long-range fiber-optic earthquake sensing by active phase noise cancellation |
title_short | Long-range fiber-optic earthquake sensing by active phase noise cancellation |
title_sort | long-range fiber-optic earthquake sensing by active phase noise cancellation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10460440/ https://www.ncbi.nlm.nih.gov/pubmed/37633995 http://dx.doi.org/10.1038/s41598-023-41161-x |
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