Publication Date:
2024-04-30
Description:
Laser interferometry enables to remotely measure microscopical length changes of deployedtelecommunication cables originating from earthquakes. Long reach and compatibility with datatransmission make it attractive for the exploration of both remote regions and highly-populated areaswhere optical networks are pervasive. However, interpretation of its response still suffers from a limitednumber of available datasets. We systematically analyze 1.5 years of acquisitions on a land-basedtelecommunication cable in comparison to co-located seismometers, with successful detection ofevents in a broad magnitude range, including very weak ones. We determine relations between acable’s detection probability and the events magnitude and distance, introducing spectral analysis offiber data as a tool to investigate earthquake dynamics. Our results reveal that quantitative analysis ispossible, confirming applicability of this technique both for the global monitoring of our planet and thedaily seismicity monitoring of populated areas, in perspective exploitable for civilian protection
Description:
Published
Description:
178
Description:
OST2 Deformazione e Hazard sismico e da maremoto
Description:
OST5 Verso un nuovo Monitoraggio
Description:
JCR Journal
Keywords:
Seismic monitoring
;
Telecom fiber network
;
Seismic detection
;
Optical Fiber
;
Laser interferometry
;
04.06. Seismology
;
05.04. Instrumentation and techniques of general interest
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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