Magalhães, Regina and Fernández-Ruiz, María R. and Costa, Luis and Martins, Hugo F. and Garcia-Ruiz, Andres and Martin-Lopez, Sonia and Williams, Ethan and Zhan, Zhongwen and Vantilho, Roel and Gonzalez-Herraez, Miguel (2020) Underwater seismology using submarine dark fibres. In: 2020 22nd International Conference on Transparent Optical Networks (ICTON). IEEE , Piscataway, NJ, pp. 1-4. ISBN 9781728184234. https://resolver.caltech.edu/CaltechAUTHORS:20200928-070216280
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Abstract
We review our recent work on chirped-pulse distributed acoustic sensing (DAS) for the characterization of teleseismic and microseismic activity, particularly in submarine environments. We show that this tool may bring orders-of-magnitude more seismic data from the sea bottom, that could lead to a new understanding of the deep Earth's interior. We show the detection of an M8.2 earthquake occurred in the Fiji Islands in August 2018, using an ocean-bottom DAS array located > 16000 km away from the earthquake. The acquired signals are compared with the spectrogram of a nearby broadband seismic station, showing major similar features between the two records. The results show the great potential of re-using already-deployed telecommunication fibre network for distributed teleseism monitoring.
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| Additional Information: | © 2020 IEEE. This work was supported by European Commission (EC) (H2020) through the FINESSE project, (MSCA-ITNETN722509); Ministerio de Economia y Competitividad (MINECO, project TEC2015-71127-C2-2-R); Ministerio de Ciencia, Innovacion y Universidades (MICINN) (IJCI-2017-33 856, RTI20l8-097957-B-C31); Comunidad de Madrid (CM) and FEDER program (SINFOTON2-CM: P2018/NMT-4326) and University of Alcala (FPI grant). | ||||||||||||||||||
| Group: | Seismological Laboratory | ||||||||||||||||||
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| DOI: | 10.1109/icton51198.2020.9203132 | ||||||||||||||||||
| Record Number: | CaltechAUTHORS:20200928-070216280 | ||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20200928-070216280 | ||||||||||||||||||
| Official Citation: | R. Magalhães et al., "Underwater seismology using submarine dark fibres," 2020 22nd International Conference on Transparent Optical Networks (ICTON), Bari, Italy, 2020, pp. 1-4, doi: 10.1109/ICTON51198.2020.9203132 | ||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||
| ID Code: | 105576 | ||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||
| Deposited On: | 28 Sep 2020 15:47 | ||||||||||||||||||
| Last Modified: | 16 Nov 2021 18:44 |
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