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The contribution of submarine optical fiber telecom cables to the monitoring of earthquakes and tsunamis in the NE Atlantic

2021-07-20Journal article Open access
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dc.contributor.authorMatias, Luis
dc.contributor.authorCarrilho, Fernando
dc.contributor.authorSá, Vasco
dc.contributor.authorOmira, Rachid
dc.contributor.authorNiehus, Manfred
dc.contributor.authorCorela, Carlos
dc.contributor.authorBarros, José
dc.contributor.authorOmar, Yasser
dc.date.accessioned2021-10-07T08:07:47Z
dc.date.available2021-10-07T08:07:47Z
dc.date.issued2021-07-20
dc.description.abstractRecent developments in optical fiber cable technology allows the use of existing and future submarine telecommunication cables to provide seismic and sea-level information. In this work we study the impact of three different technologies, 1) SMART, Science Monitoring and Reliable Telecommunications; 2) DAS, Distributed Acoustic Sensing, and; 3) LI, Laser Interferometry, for effective earthquake and tsunami monitoring capabilities on the NE Atlantic. The SW Iberia is the source area of the largest destructive earthquake that struck Europe since the year 1000, the November 1, 1755 event. This earthquake generated also a destructive tsunami affecting the whole basin. This tectonically active area is crossed by the CAM (Continent-Azores-Madeira) submarine cable on a ring configuration. Due to the end of cable lifetime the current cables need to be replaced by 2024 and the technical requirements must be defined in mid-2021. The Azores archipelago is the focus of frequent seismic crizes and occasionally destructive earthquakes. A common feature of these seismic events is that they take place offshore, an area that is difficult to monitor from land-based instruments. In this work we evaluate the contribution of SMART cables to the earthquake monitoring and tsunami early warning system in SW Iberia and show how DAS and LI can improve earthquake monitoring on two active domains of the Azores. For tsunami early warning, we show how the offshore sea-level measurements provide clean offshore tsunami records when compared to coastal observations by tide gauges, which greatly improves the efficiency of the system. For earthquake monitoring, the data processing operational routine is examined using Monte-Carlo simulations. These take into consideration the errors in phase picking and the uncertainty on the 1D velocity model used for earthquake location. Quality of earthquake location is examined using the difference between the true location and the centroid of the computed epicenters and by the overall ellipse of uncertainty obtained from 100 runs. The added value provided by instrumented submarine telecommunication cables to mitigate earthquake and tsunami risk demonstrated in this work will help authorities and the society in general to take the political decisions required for its full implementation worldwide.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMATIAS, Luís; [et al] – The contribution of submarine optical fiber telecom cables to the monitoring of earthquakes and tsunamis in the NE Atlantic. Frontiers in Earth Science. eISSN 2296-6463. Vol. 9 (2021), pp. 1-17pt_PT
dc.identifier.doi10.3389/feart.2021.686296pt_PT
dc.identifier.eissn2296-6463
dc.identifier.urihttp://hdl.handle.net/10400.21/13830
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFRONTIERS MEDIA SApt_PT
dc.relationInstituto Dom Luiz
dc.relationInstituto de Telecomunicações
dc.subjectEarthquakespt_PT
dc.subjectTsunamispt_PT
dc.subjectEarly warningpt_PT
dc.subjectSubmarine optical fiber cablespt_PT
dc.subjectDASpt_PT
dc.titleThe contribution of submarine optical fiber telecom cables to the monitoring of earthquakes and tsunamis in the NE Atlanticpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInstituto Dom Luiz
oaire.awardTitleInstituto de Telecomunicações
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50019%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50008%2F2020/PT
oaire.citation.endPage17pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleFrontiers in Earth Sciencept_PT
oaire.citation.volume9pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameMatias
person.familyNameCarrilho
person.familyNameOmira
person.familyNameNiehus
person.familyNameCorela
person.familyNameOmar
person.givenNameLuis
person.givenNameFernando
person.givenNameRachid
person.givenNameManfred
person.givenNameCarlos
person.givenNameYasser
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person.identifier.orcid0000-0002-8086-4874
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person.identifier.orcid0000-0002-6198-7588
person.identifier.orcid0000-0002-0344-5115
person.identifier.orcid0000-0002-0150-2286
person.identifier.orcid0000-0003-2333-5762
person.identifier.ridK-7347-2012
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person.identifier.ridA-3318-2012
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person.identifier.scopus-author-id6701795172
person.identifier.scopus-author-id34971883700
person.identifier.scopus-author-id6601980850
person.identifier.scopus-author-id37045305000
person.identifier.scopus-author-id6603799403
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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