Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast, southeastern South America

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Meteorological tsunamis are frequently observed in different tide stations at the southeastern coast of South America. They are associated with the occurrence of atmospheric gravity waves during the passages of cold fronts over the Buenos Aires Province continental shelf. On the other hand, storm su...

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Autor principal: Dragani, Walter César
Publicado: 2013
Materias:
Buenos Aires Province coast
Coastal erosion
Meteorological cold front passages
Meteorological tsunamis
Storm surges
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0921030X_v74_n1_p269_Dragani
http://hdl.handle.net/20.500.12110/paper_0921030X_v74_n1_p269_Dragani
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0921030X_v74_n1_p269_Dragani
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spelling paper:paper_0921030X_v74_n1_p269_Dragani2023-06-08T15:50:16Z Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast, southeastern South America Dragani, Walter César Buenos Aires Province coast Coastal erosion Meteorological cold front passages Meteorological tsunamis Storm surges Meteorological tsunamis are frequently observed in different tide stations at the southeastern coast of South America. They are associated with the occurrence of atmospheric gravity waves during the passages of cold fronts over the Buenos Aires Province continental shelf. On the other hand, storm surges are also frequent in the region, and they are associated with strong and persistent southerlies, which are also frequent during cold front passages. The impact of meteorological tsunamis in coastal erosion and in the statistics of storm surge trends is discussed in this paper. For this study, fifteen meteorological tsunamis (with maximum wave heights higher than 0.20 m), seven of them simultaneous to the occurrence of storm surge events (with extreme levels higher than |±0.60 m|), are selected from April 2010 to January 2013. The impact of meteorological tsunamis in the storm erosion potential index (SEPI) is evaluated. Not significant differences are obtained between SEPI calculated with and without filtering the meteorological tsunami signal from the storm surge data series. Moreover, several experiments are carried out computing SEPI from synthetic sea level data series, but very low changes (lower than 4 %) are also obtained. It is concluded that the presence of moderate meteorological tsunamis on sea level records would not enhance this index at the Buenos Aires Province coast. On the other hand, taking into account that meteorological tsunamis can reach up the 20–30 % of the storm surge height, it was concluded that the statistics of storm surge trends (and their uncertainties) should be revised for Mar del Plata data series. © 2013, Springer Science+Business Media Dordrecht. Fil:Dragani, W.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0921030X_v74_n1_p269_Dragani http://hdl.handle.net/20.500.12110/paper_0921030X_v74_n1_p269_Dragani
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Buenos Aires Province coast
Coastal erosion
Meteorological cold front passages
Meteorological tsunamis
Storm surges
spellingShingle Buenos Aires Province coast
Coastal erosion
Meteorological cold front passages
Meteorological tsunamis
Storm surges
Dragani, Walter César
Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast, southeastern South America
topic_facet Buenos Aires Province coast
Coastal erosion
Meteorological cold front passages
Meteorological tsunamis
Storm surges
description Meteorological tsunamis are frequently observed in different tide stations at the southeastern coast of South America. They are associated with the occurrence of atmospheric gravity waves during the passages of cold fronts over the Buenos Aires Province continental shelf. On the other hand, storm surges are also frequent in the region, and they are associated with strong and persistent southerlies, which are also frequent during cold front passages. The impact of meteorological tsunamis in coastal erosion and in the statistics of storm surge trends is discussed in this paper. For this study, fifteen meteorological tsunamis (with maximum wave heights higher than 0.20 m), seven of them simultaneous to the occurrence of storm surge events (with extreme levels higher than |±0.60 m|), are selected from April 2010 to January 2013. The impact of meteorological tsunamis in the storm erosion potential index (SEPI) is evaluated. Not significant differences are obtained between SEPI calculated with and without filtering the meteorological tsunami signal from the storm surge data series. Moreover, several experiments are carried out computing SEPI from synthetic sea level data series, but very low changes (lower than 4 %) are also obtained. It is concluded that the presence of moderate meteorological tsunamis on sea level records would not enhance this index at the Buenos Aires Province coast. On the other hand, taking into account that meteorological tsunamis can reach up the 20–30 % of the storm surge height, it was concluded that the statistics of storm surge trends (and their uncertainties) should be revised for Mar del Plata data series. © 2013, Springer Science+Business Media Dordrecht.
author Dragani, Walter César
author_facet Dragani, Walter César
author_sort Dragani, Walter César
title Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast, southeastern South America
title_short Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast, southeastern South America
title_full Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast, southeastern South America
title_fullStr Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast, southeastern South America
title_full_unstemmed Simultaneous meteorological tsunamis and storm surges at Buenos Aires coast, southeastern South America
title_sort simultaneous meteorological tsunamis and storm surges at buenos aires coast, southeastern south america
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0921030X_v74_n1_p269_Dragani
http://hdl.handle.net/20.500.12110/paper_0921030X_v74_n1_p269_Dragani
work_keys_str_mv AT draganiwaltercesar simultaneousmeteorologicaltsunamisandstormsurgesatbuenosairescoastsoutheasternsouthamerica
_version_ 1768542795021156352

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