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Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features
Natural hazard prediction and efficient crust exploration require dense seismic observations both in time and space. Seismological techniques provide ground-motion data, whose accuracy depends on sensor characteristics and spatial distribution. Here we demonstrate that dynamic strain determination i...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6030137/ https://www.ncbi.nlm.nih.gov/pubmed/29970883 http://dx.doi.org/10.1038/s41467-018-04860-y |
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author | Jousset, Philippe Reinsch, Thomas Ryberg, Trond Blanck, Hanna Clarke, Andy Aghayev, Rufat Hersir, Gylfi P. Henninges, Jan Weber, Michael Krawczyk, Charlotte M. |
author_facet | Jousset, Philippe Reinsch, Thomas Ryberg, Trond Blanck, Hanna Clarke, Andy Aghayev, Rufat Hersir, Gylfi P. Henninges, Jan Weber, Michael Krawczyk, Charlotte M. |
author_sort | Jousset, Philippe |
collection | PubMed |
description | Natural hazard prediction and efficient crust exploration require dense seismic observations both in time and space. Seismological techniques provide ground-motion data, whose accuracy depends on sensor characteristics and spatial distribution. Here we demonstrate that dynamic strain determination is possible with conventional fibre-optic cables deployed for telecommunication. Extending recently distributed acoustic sensing (DAS) studies, we present high resolution spatially un-aliased broadband strain data. We recorded seismic signals from natural and man-made sources with 4-m spacing along a 15-km-long fibre-optic cable layout on Reykjanes Peninsula, SW-Iceland. We identify with unprecedented resolution structural features such as normal faults and volcanic dykes in the Reykjanes Oblique Rift, allowing us to infer new dynamic fault processes. Conventional seismometer recordings, acquired simultaneously, validate the spectral amplitude DAS response between 0.1 and 100 Hz bandwidth. We suggest that the networks of fibre-optic telecommunication lines worldwide could be used as seismometers opening a new window for Earth hazard assessment and exploration. |
format | Online Article Text |
id | pubmed-6030137 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-60301372018-07-05 Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features Jousset, Philippe Reinsch, Thomas Ryberg, Trond Blanck, Hanna Clarke, Andy Aghayev, Rufat Hersir, Gylfi P. Henninges, Jan Weber, Michael Krawczyk, Charlotte M. Nat Commun Article Natural hazard prediction and efficient crust exploration require dense seismic observations both in time and space. Seismological techniques provide ground-motion data, whose accuracy depends on sensor characteristics and spatial distribution. Here we demonstrate that dynamic strain determination is possible with conventional fibre-optic cables deployed for telecommunication. Extending recently distributed acoustic sensing (DAS) studies, we present high resolution spatially un-aliased broadband strain data. We recorded seismic signals from natural and man-made sources with 4-m spacing along a 15-km-long fibre-optic cable layout on Reykjanes Peninsula, SW-Iceland. We identify with unprecedented resolution structural features such as normal faults and volcanic dykes in the Reykjanes Oblique Rift, allowing us to infer new dynamic fault processes. Conventional seismometer recordings, acquired simultaneously, validate the spectral amplitude DAS response between 0.1 and 100 Hz bandwidth. We suggest that the networks of fibre-optic telecommunication lines worldwide could be used as seismometers opening a new window for Earth hazard assessment and exploration. Nature Publishing Group UK 2018-07-03 /pmc/articles/PMC6030137/ /pubmed/29970883 http://dx.doi.org/10.1038/s41467-018-04860-y Text en © The Author(s) 2018 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Jousset, Philippe Reinsch, Thomas Ryberg, Trond Blanck, Hanna Clarke, Andy Aghayev, Rufat Hersir, Gylfi P. Henninges, Jan Weber, Michael Krawczyk, Charlotte M. Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features |
title | Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features |
title_full | Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features |
title_fullStr | Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features |
title_full_unstemmed | Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features |
title_short | Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features |
title_sort | dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6030137/ https://www.ncbi.nlm.nih.gov/pubmed/29970883 http://dx.doi.org/10.1038/s41467-018-04860-y |
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