Submarine optical cables for earthquake detection
| Autor: | André Xuereb, Anna Tampellini, Davide Calonico, Filippo Levi, Louise Wright, J. Kronjäger, Stephen P. Robinson, Brian Baptie, Giuseppe Marra, Alberto Mura, R. Luckett, Cecilia Clivati |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Seismometer
Induced seismicity Multidisciplinary Optical fiber 010504 meteorology & atmospheric sciences Interferometers Earth (Planet) -- Internal structure Submarine Ranging 010502 geochemistry & geophysics 01 natural sciences Physics::Geophysics law.invention Metrology law Planet Epicenter Earthquakes Optical fibers Seismology 0105 earth and related environmental sciences Submarine earthquake |
| Popis: | Detecting ocean-floor seismic activity is crucial for our understanding of the interior structure and dynamic behavior of the Earth. However, 70% of the planet’s surface is covered by water and seismometers coverage is limited to a handful of permanent ocean bottom stations. We show that existing telecommunication optical fiber cables can detect seismic events when combined with state-of-the-art frequency metrology techniques by using the fiber itself as the sensing element. We detected earthquakes over terrestrial and submarine links with length ranging from 75 to 535 km and a geographical distance from the earthquake's epicenter ranging from 25 to 18,500 km. Implementing a global seismic network for real-time detection of underwater earthquakes requires applying the proposed technique to the existing extensive submarine optical fiber network. peer-reviewed |
| Databáze: | OpenAIRE |
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