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Teleseisms monitoring using chirped-pulse φOTDR

Fernández-Ruiz, María R. R. and Williams, Ethan L. and Magalhaes, Regina and Vanthillo, Roel and Costa, Luis and Zhan, Zhongwen and Martin-Lopez, Sonia and Gonzalez-Herraez, Miguel and Martins, Hugo F. (2019) Teleseisms monitoring using chirped-pulse φOTDR. In: Seventh European Workshop on Optical Fibre Sensors. Proceedings of SPIE. No.11199. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 1119921. ISBN 9781510631236.

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Monitoring of seismic activity around the word is a topic of high interest for the analysis and understanding of deep Earth dynamics. However, the deployment of a homogeneous network of seismic stations both onshore and offshore poses a strong economic challenge that makes this solution practically inviable. Using the pre-existing fiber optical network for seismic monitoring arises as an excellent solution with important advantages in terms of ubiquity and cost. In this communication, we present the detection of an M8.2 earthquake occurred in Fiji Island using distributed acoustic sensing based on chirped-pulse φOTDR. Two sensors were placed simultaneously at two different locations at >9,000 km from the earthquake epicenter: a metropolitan area and a submarine environment. The recorded data is postprocessed using a 2D linear filter to cancel out environmental noise. The resulting signals are compared with the signals acquired by nearby seismometers. The attained good matching between the recorded data and the seismometer data shows the strong potential of the use of the already-deployed communication fiber network for teleseism monitoring.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Fernández-Ruiz, María R. R.0000-0003-3561-2405
Magalhaes, Regina0000-0003-4666-0840
Zhan, Zhongwen0000-0002-5586-2607
Additional Information:© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was supported by project FINESSE MSCA-ITN-ETN-722509; the DOMINO Water JPI project under the WaterWorks2014 cofounded call by EC Horizon 2020 and Spanish MINECO; Comunidad de Madrid and FEDER Program under grant SINFOTON2-CM: P2018/NMT-4326; the Spanish Government under projects TEC2015-71127-C2-2-R and RTI2018-097957-B-C31. M.R.F.M and H.F.M. acknowledge financial support from the Spanish MICINN under contracts no. FJCI-2016-27881 and IJCI-2017-33856, respectively.
Group:Seismological Laboratory
Funding AgencyGrant Number
Marie Curie Fellowship722509
Ministerio de Economía, Industria y Competitividad (MINECO)TEC2015-71127-C2-2-R
Comunidad de MadridUNSPECIFIED
Fondo Europeo de Desarrollo Regional (FEDER)SINFOTON2-CM: P2018/NMT-4326
Ministerio de Economía, Industria y Competitividad (MINECO)RTI2018-097957-B-C31
Ministerio de Ciencia e Innovación (MCINN)FJCI-2016-27881
Ministerio de Ciencia e Innovación (MCINN)IJCI-2017-33856
Subject Keywords:Rayleigh scattering, optical time-domain reflectometry, seismology, distributed sensing
Series Name:Proceedings of SPIE
Issue or Number:11199
Record Number:CaltechAUTHORS:20190829-154056646
Persistent URL:
Official Citation:María R. Fernández-Ruiz, Ethan L. Williams, Regina Magalhaes, Roel Vanthillo, Luís Costa, Zhongwen Zhan, Sonia Martin-Lopez, Miguel Gonzalez-Herraez, and Hugo F. Martins "Teleseisms monitoring using chirped-pulse φOTDR", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 1119921 (28 August 2019);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98359
Deposited By: George Porter
Deposited On:30 Aug 2019 14:13
Last Modified:16 Nov 2021 17:38

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