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FOCUS SIGNED

Fiber Optic Cable Use for Seafloor studies of earthquake hazard and deformation

Total Cost €

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EC-Contrib. €

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Partnership

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 FOCUS project word cloud

Explore the words cloud of the FOCUS project. It provides you a very rough idea of what is the project "FOCUS" about.

distances    emso    inaccessible    anticipated    cm    structures    independent    monitor    displacements    north    dual    marine    quantify    networks    sicily    natural    region    seafloor    reflectometry    calibrated    alfeo    displacement    site    surface    deformation    revolutionize    thirds    small    earth    cascadia    bathymetry    cable    observations    communication    capability    two    tremendous    infrastructure    health    micro    dams    seismological    structural    offshore    mm    laser    optic    bridges    engineering    faults    potentially    covered    warning    botdr    breakthrough    mediterranean    retired    primary    once    geodetic    surveys    caused    unprecedented    outcomes    technique    fault    expand    seismics    strains    crosses    seismology    undersea    modern    km    mapped    poised    network    tectonics    hazard    turn    seismic    lt    28    secondary    resolution    japan    water    industry    200    stations    active    fiber    cables    tested    trace    earthquake    catania    never    monitoring    geophysical    largely    instruments    either    pipelines    zones    telecommunication   

Project "FOCUS" data sheet

The following table provides information about the project.

Coordinator
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS 

Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794
website: www.cnrs.fr

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 3˙487˙910 €
 EC max contribution 3˙487˙910 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-ADG
 Funding Scheme ERC-ADG
 Starting year 2018
 Duration (year-month-day) from 2018-10-01   to  2023-09-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS FR (PARIS) coordinator 2˙219˙272.00
2    INSTITUT FRANCAIS DE RECHERCHE POUR L'EXPLOITATION DE LA MER FR (PLOUZANE) participant 723˙013.00
3    I.D.I.L. SAS (INGENIERIE-DEVELOPPEMENT-INSTRUMENTATION-LASER) FR (LANNION) participant 545˙625.00

Map

 Project objective

Two-thirds of the Earth’s surface is covered by water and thus largely inaccessible to modern networks of seismological instruments. The FOCUS project is poised to revolutionize seismic monitoring of the seafloor through a novel use of fiber optic cables to improve hazard assessment and increase early warning capability. Laser reflectometry using BOTDR, commonly used for structural health monitoring of large-scale engineering structures (e.g. - bridges, dams, pipelines, etc.), can measure very small strains (< 1 mm) at very large distances (10 - 200 km). It has never been used to monitor deformation caused by active faults on the seafloor. The objective of the FOCUS project is to demonstrate that this technique can measure small (1 - 2 cm) displacements on a primary test site offshore Sicily where the 28 km long EMSO Catania cable crosses the recently mapped North Alfeo Fault. BOTDR observations must be calibrated by other independent measurements. Therefore, targeted marine geophysical surveys of the seafloor along the trace of the cable and faults are planned, with micro-bathymetry, high-resolution seismics, seafloor seismic stations and use of seafloor geodetic instruments to quantify fault displacement. Once the BOTDR fault-monitoring technique has been tested and calibrated offshore Sicily, the goal is to expand it to other fiber optic cable networks, either existing research networks in earthquake hazard zones (Japan, Cascadia) or to the Mediterranean region through access to retired telecommunication cables, or through the development of dual-use cables with industry partners, (two of the anticipated outcomes of the FOCUS project). The novel secondary use of fiber optic cables as described by FOCUS represents a potentially tremendous breakthrough in seismology, tectonics and natural hazard early warning capability, one that could turn Earth’s future undersea communication infrastructure into a seismological monitoring network of unprecedented scale.

 Publications

year authors and title journal last update
List of publications.
2019 Marc-André Gutscher, Jean-Yves Royer, David Graindorge, Shane Murphy, Frauke Klingelhoefer, Chastity Aiken, Antonio Cattaneo, Giovanni Barreca, Lionel Quetel, Giorgio Riccobene, Florian Petersen, Morelia Urlaub, Sebastian Krastel, Felix Gross, Heidrun Kopp, Lucia Margheriti, Laura Beranzoli
Fiber optic monitoring of active faults at the seafloor: I the FOCUS project
published pages: 32-37, ISSN: 1629-4475, DOI: 10.1051/photon/2019s432
Photoniques issue number 3, (6 per year) 2020-04-03

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