The search result changed since you submitted your search request. Documents might be displayed in a different sort order.
  • search hit 54 of 559
Back to Result List

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 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-opticNatural 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.show moreshow less

Download full text files

  • pmnr691.pdfeng
    (3318KB)

    SHA-1: a16a8736417422d901a0244a784046898746b4ed

Export metadata

Additional Services

Share in Twitter Search Google Scholar Statistics
Metadaten
Author:Philippe JoussetORCiD, Thomas ReinschORCiD, Trond RybergORCiDGND, Hanna Blanck, Andy Clarke, Rufat Aghayev, Gylfi P. Hersir, Jan Henninges, Michael WeberORCiDGND, Charlotte M. KrawczykORCiD
URN:urn:nbn:de:kobv:517-opus4-426770
DOI:https://doi.org/10.25932/publishup-42677
Parent Title (English):Postprints der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe
Series (Serial Number):Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (691)
Document Type:Postprint
Language:English
Date of first Publication:2019/04/04
Year of Completion:2018
Publishing Institution:Universität Potsdam
Release Date:2019/04/04
Tag:North-America; fault zone; frequency; tomography
Issue:691
Pagenumber:11
Source:Nature Communications 9 (2018) Art. 2509 DOI: 10.1038/s41467-018-04860-y
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 50 Naturwissenschaften / 500 Naturwissenschaften und Mathematik
Peer Review:Referiert
Publication Way:Open Access
Licence (German):License LogoCreative Commons - Namensnennung, 4.0 International