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Seismic monitoring using the telecom fiber network

Earth Sciences

Seismic monitoring using the telecom fiber network

S. Donadello, C. Clivati, et al.

This groundbreaking research by Simone Donadello, Cecilia Clivati, Aladino Govoni, and others unveils the capability of laser interferometry on fiber optic cables to monitor seismic activity. The study demonstrates the detection of earthquakes over a vast magnitude range using innovative techniques, paving the way for new applications in both local and global seismic monitoring.

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~3 min • Beginner • English
Abstract
Laser interferometry enables to reliably measure microscopical length changes of deployed telecommunication cables originating from earthquakes. Long reach and compatibility with data transmission make it attractive for the exploration of both remote regions and highly-populated areas where optical networks are pervasive. However, interpretation of its response still suffers from a limited number of available datasets. We systematically analyze 1.5 years of acquisitions on a land-based telecommunication cable in comparison to co-located seismometers, with successful detection of events in a broad magnitude range, including very weak ones. We determine relations between a cable’s detection probability and events magnitude and distance, introducing spectral analysis of fiber data as a tool to investigate earthquake dynamics. Our results reveal that quantitative analysis is possible, confirming applicability of this technique both to the global monitoring of our planet and the daily seismic monitoring of populated areas, in perspective exploitable for civilian purposes.
Publisher
Communications Earth & Environment
Published On
Sep 26, 2024
Authors
Simone Donadello, Cecilia Clivati, Aladino Govoni, Lucia Margheritii, Maurizio Vassallo, Daniele Brend, Marianna Hovsepyan, Elio K. Bertaccoc, Roberto Concas, Filippo Levi, Alberto Mura, André Herrero, Francesco Carpentieri, Davide Calonico
Tags
laser interferometry
fiber optic cables
seismic monitoring
earthquake detection
spectral analysis
telecommunication
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