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Underwater seismology using submarine dark fibres

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.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Magalhães, Regina0000-0003-4666-0840
Fernández-Ruiz, María R.0000-0003-3561-2405
Martins, Hugo F.0000-0003-3927-8125
Garcia-Ruiz, Andres0000-0002-6583-5303
Martin-Lopez, Sonia0000-0001-5203-6206
Williams, Ethan0000-0002-7917-4104
Zhan, Zhongwen0000-0002-5586-2607
Gonzalez-Herraez, Miguel0000-0003-2555-2971
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
Funding AgencyGrant Number
European Research Council (ERC)722509
Ministerio de Economía, Industria y Competitividad (MINECO)TEC2015-71127-C2-2-R
Ministerio de Ciencia e Innovación (MCINN)IJCI-2017-33 856
Ministerio de Ciencia e Innovación (MCINN)RTI20l8-097957-B-C31
Comunidad de MadridUNSPECIFIED
Fondo Europeo de Desarrollo Regional (FEDER)SINFOTON2-CM: P2018/NMT-4326
University of AlcaláUNSPECIFIED
Record Number:CaltechAUTHORS:20200928-070216280
Persistent URL:
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
Deposited By: Tony Diaz
Deposited On:28 Sep 2020 15:47
Last Modified:16 Nov 2021 18:44

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