TY  - JOUR
A1  - Jousset, Philippe
A1  - Reinsch, Thomas
A1  - Ryberg, Trond
A1  - Blanck, Hanna
A1  - Clarke, Andy
A1  - Aghayev, Rufat
A1  - Hersir, Gylfi P.
A1  - Henninges, Jan
A1  - Weber, Michael
A1  - Krawczyk, Charlotte M.
T1  - Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features
JF  - Nature Communications
N2  - 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.
Y1  - 2018
U6  - https://doi.org/10.1038/s41467-018-04860-y
SN  - 2041-1723
VL  - 9
PB  - Nature Publ. Group
CY  - London
ER  - 
TY  - GEN
A1  - Jousset, Philippe
A1  - Reinsch, Thomas
A1  - Ryberg, Trond
A1  - Blanck, Hanna
A1  - Clarke, Andy
A1  - Aghayev, Rufat
A1  - Hersir, Gylfi  P.
A1  - Henninges, Jan
A1  - Weber, Michael
A1  - Krawczyk, Charlotte M.
T1  - Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features
T2  - Postprints der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe
N2  - 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.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 691 
KW  - North-America
KW  - fault zone
KW  - tomography
KW  - frequency
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-426770
IS  - 691
ER  -