Extreme sea levels at Rapa Nui (Easter Island) during intense atmospheric rivers

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dc.contributor.authorCarvajal, Matías
dc.contributor.authorWinckler, Patricio
dc.contributor.authorGarreaud, René
dc.contributor.authorIgualt,Felipe
dc.contributor.authorContreras‐López, Manuel
dc.contributor.authorAveril, Pamela
dc.contributor.authorCisternas, Marco
dc.contributor.authorGubler, Alejandra
dc.contributor.authorBreuer, Wolfgang A.
dc.date.accessioned2022-11-30T02:46:14Z
dc.date.available2022-11-30T02:46:14Z
dc.date.issued2021
dc.description.abstractIn addition to the tsunami hazard posed by distant great earthquakes, Rapa Nui (Easter Island), in the Southeast Pacific Ocean, is exposed to frequent and intense coastal storms. Here, we use sea-level records and field surveys guided by video and photographic footage to show that extreme sea levels at Rapa Nui occur much more frequent than previously thought and thus constitute an unrecognized hazard to the inland’s maritime supply chain. We found that extreme sea-level events, including the two most extreme (March 5th and May 5th, 2020) in our 17-month-long analyzed period (from January 1st, 2019, to May 31st, 2020), resulted from constructive superpositions of seiches on the shelf, storm surges and high tides. By further analyzing time series of atmospheric and wind-generated wave data, we conclude that these extreme sea levels are ultimately driven by the breaking of large waves near the coastline (i.e., wave setup), with lesser contribution of barometric setup and even less of wind setup. We also propose that these large waves were mainly generated from strong, long-lasting, NW winds associated with intense atmospheric rivers (long, narrow regions in the atmosphere that transport abundant water vapor) passing over Rapa Nui. Given that the intensity of atmospheric rivers and sea level are thought to increase as climate changes, a deeper understanding of the relation between meteorological and oceanographic processes at Rapa Nui is strongly needed.en_ES
dc.facultadFacultad de Ingenieríaen_ES
dc.file.nameCarvajal_Ext2021.pdf
dc.identifier.citationCarvajal, M., Winckler, P., Garreaud, R. et al. Extreme sea levels at Rapa Nui (Easter Island) during intense atmospheric rivers. Nat Hazards 106, 1619–1637 (2021). https://doi.org/10.1007/s11069-020-04462-2en_ES
dc.identifier.doihttps://doi.org/10.1007/s11069-020-04462-2
dc.identifier.urihttp://repositoriobibliotecas.uv.cl/handle/uvscl/7273
dc.languageen
dc.publisherSpringer
dc.sourceNatural Hazards
dc.subjectRAPA NUIen_ES
dc.subjectEASTER ISLANDen_ES
dc.subjectSEICHESen_ES
dc.subjectMETEOTSUNAMISen_ES
dc.subjectSTORM SURGEen_ES
dc.subjectSEA LEVELen_ES
dc.subjectSHELF RESONANCEen_ES
dc.subjectATMOSPHERIC RIVERSen_ES
dc.subjectINTEGRATED WATER VAPORen_ES
dc.titleExtreme sea levels at Rapa Nui (Easter Island) during intense atmospheric rivers
dc.typeArticulo
uv.departamentoEscuela de Ingenieria Civil Oceanica
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