Sea surface network optimization for tsunami forecasting in the near field: application to the 2015 Illapel earthquake

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dc.contributor.authorNavarrete, P.
dc.contributor.authorCienfuegos Carrasco, Rodrigo Alberto
dc.contributor.authorSatake, K.
dc.contributor.authorWang, Y.
dc.contributor.authorUrrutia, A.
dc.contributor.authorBenavente, R.
dc.contributor.authorCatalan, P. A.
dc.contributor.authorCrempien de la Carrera, Jorge
dc.contributor.authorMulia, I.
dc.date.accessioned2021-09-10T19:55:52Z
dc.date.available2021-09-10T19:55:52Z
dc.date.issued2019
dc.description.abstractWe propose a method for defining the optimal locations of a network of tsunameters in view of near real-time tsunami forecasting using sea surface data assimilation in the near and middle fields, just outside of the source region. The method requires first the application of the empirical orthogonal function analysis to identify the potential initial locations, followed by an optimization heuristic that minimizes a cost-benefit function to narrow down the number of stations. We apply the method to a synthetic case of the 2015 M w 8.4 Illapel Chile earthquake and show that it is possible to obtain an accurate tsunami forecast for wave heights at near coastal points, not too close to the source, from assimilating data from three tsunameters during 14 min, but with a minimum average time lag of nearly 5 min between simulated and forecasted waveforms. Additional tests show that the time lag is reduced for tsunami sources that are located just outside of the area covered by the tsunameter network. The latter suggests that sea surface data assimilation from a sparse network of stations could be a strong complement for the fastest tsunami early warning systems based on pre-modelled seismic scenarios.
dc.format.extent11 páginas
dc.fuente.origenOUP
dc.identifier.doi10.1093/gji/ggaa098
dc.identifier.eissn1365-246X
dc.identifier.issn0956-540X
dc.identifier.urihttps://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9267125
dc.identifier.urihttps://doi.org/10.1093/gji/ggaa098
dc.identifier.wosidWOS:000536503700013
dc.information.autorucEscuela de ingeniería ; Cienfuegos Carrasco, Rodrigo Alberto ; S/I ; 8598
dc.information.autorucEscuela de ingeniería ; Crempien De La Carrera, Jorge Gustavo Federico ; S/I ; 1044475
dc.issue.numero1
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final1650
dc.pagina.inicio1640
dc.publisherOUP
dc.revistaGEOPHYSICAL JOURNAL INTERNATIONALes_ES
dc.revistaGeophysical Journal International
dc.rightsacceso restringido
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleSea surface network optimization for tsunami forecasting in the near field: application to the 2015 Illapel earthquakees_ES
dc.typeartículo
dc.volumen221
sipa.codpersvinculados8598
sipa.codpersvinculados1044475
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