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Distributed sensing of earthquakes and ocean-solid Earth interactions on seafloor telecom cables

Sladen, A. and Rivet, D. and Ampuero, J. P. and De Barros, L. and Hello, Y. and Calbris, G. and Lamare, P. (2019) Distributed sensing of earthquakes and ocean-solid Earth interactions on seafloor telecom cables. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20191220-100404358

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Abstract

Two thirds of the surface of our planet are covered by water and are still poorly instrumented, which has prevented the earth science community from addressing numerous key scientific questions. The potential to leverage the existing fiber optic seafloor telecom cables that criss-cross the oceans, by turning them into dense arrays of seismo-acoustic sensors, remains to be evaluated. Here, we report Distributed Acoustic Sensing measurements on a 41.5 km-long telecom cable that is deployed offshore Toulon, France. Our observations demonstrate the capability to monitor with unprecedented details the ocean-solid earth interactions from the coast to the abyssal plain, in addition to regional seismicity (e.g., a magnitude 1.9 micro-earthquake located 100 km away) with signal characteristics comparable to those of a coastal seismic station.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
https://doi.org/10.31223/osf.io/ekrfyDOIDiscussion Paper
ORCID:
AuthorORCID
Sladen, A.0000-0003-4126-0020
Ampuero, J. P.0000-0002-4827-7987
Additional Information:CC-By Attribution 4.0 International. Submitted: June 05, 2019; Last edited: July 19, 2020. We thank the team from the Centre de Physique des Particules de Marseille who greatly facilitated the access the infrastructure. The MEUST infrastructure is financed with the support of the CNRS/IN2P3, the Region Sud, France (CPER the State (DRRT) and the Europe (FEDER). This work was supported by the SEAFOOD project, funded in part by grant ANR-17-CE04-0007 of the French Agence Nationale de la Recherche and in part by Université Côte d’Azur IDEX program UCA JEDI ANR-15-IDEX-0001.
Group:Seismological Laboratory
Funders:
Funding AgencyGrant Number
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Region Sud (France)UNSPECIFIED
Fondo Europeo de Desarrollo Regional (FEDER)UNSPECIFIED
Agence Nationale pour la Recherche (ANR)ANR-17-CE04-0007
Agence Nationale pour la Recherche (ANR)ANR-15-IDEX-0001
Subject Keywords:Distributed Acoustic Sensing; earthquake; KM3NeT; MEUST; microseisms; Scholte waves; Seafloor instrumentation
Record Number:CaltechAUTHORS:20191220-100404358
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20191220-100404358
Official Citation:Sladen, A., Rivet, D., Ampuero, J., De Barros, L., Hello, Y., Calbris, G., & Lamare, P. (2019, June 7). Distributed sensing of earthquakes and ocean-solid Earth interactions on seafloor telecom cables. https://doi.org/10.31223/osf.io/ekrfy
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100388
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:21 Dec 2019 16:55
Last Modified:20 Jul 2020 21:47

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