Natural hazard monitoring using Distributed Acoustic Sensing
The Monidas project develops Distributed Acoustic Sensing (DAS) technologies geared toward monitoring seismic, volcanic, and landslide
natural hazards.
DAS sensors use standard telecommunication optical fibres to measure the deformation of cables in the acoustic range of 0.1 to 1kHz. By doing so, a single fibre can act as a dense distribution of sensors over dozen of kilometres.
As part of this industry-academic initiative, a new DAS acquisition system is constructed in partnership with Febus-Optics. This system is being tested in four key geological settings: on Stromboli volcano, on submarine cables off the coast of Greece, on a landslide site in the Alps, and at an active geothermal site in Alsace, France. These four targets are chosen to represent the four main geological risks faced on French territory. Cutting edge data processing techniques are used to improve the detection and characterisation of seismic sources, seismo-volcanic deformation, rock-fall, landslides, amongst others.
The ultimate goal of the Monidas project is to provide the French geophysical community with a new instrument, based on technology that has shown promising results in monitoring and data processing.
Funded by: French National Research Agency (ANR)
Project leader: BRGM, French Geological Survey
Project partners:
IPGP, Institut de Physique du Globe Paris
EOST, Ecole et Observatoire des Sciences de la Terre
GéoAzur
Febus-Optics
Sisprobe
EOST budget: 18 700€
Project duration: 2020-2024
To learn more, visit: https://anr.fr/Project-ANR-19-CE04-0011