Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina

Autores
Guisado Pintado, Emilia; Isla, Manuel Fermín
Año de publicación
2023
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Sandy coastal systems are very dynamic systems in which morphological changes occur overdifferent time scales that ranges from hours to decades. However, it has been widely reported thatmajor storms are the main responsible of the most significant changes in short to medium timescales. Major storms have been defined using a variety of environmental variables, but they arenormally associated with high values of four main parameters: 1) Wave heights (Hs); 2) Duration(Du); or 3) Frequency (Fq); 4) Orientation (Or).In this study we aim to characterise types of major storms and to categorize morphologicalimpacts over a hybrid coastal system. The study site, known as Punta Rasa, is located in theSamborombón bay in the outer part of the Río de La Plata estuary (Argentina) and corresponds toa zone of interaction between a large sandy spit and a backwash tidal flat system. Methods usedcombine statistical analysis of wave climate time-series, analysis of wave energy patterns throughnearshore numerical modelling (SWAN) and comparison of pre- and post-storm morphologicalchanges using satellite images derived indexes (e.g. NDWI).Results allowed to characterise four types of major storms impacting the study area: High-EnergyStorms (HES), defined by an average storm Hs below the 1% exceedance (> 2.6 m), Long-LivedStorms (LLS) represented by an exceedance of the 1% of Du (> 60 hours), Storm Groups (SG) inwhich storm frequency is less than 6 days and Northeastern moderate storms (NMS) defined bytheir eastern, onshore oriented direction. Under HES and NSM storms erosional areas aredominant over depositional (62.34%), which most of the system showing shoreline retreat and agrowth of the end spit area. For LLS and SG storms the morphological impact varies alongshorewith a general flattens of the end spit (showing a ‘rounded-shape’ morphology) and erosionalhotspots over the southeastern coastal section.
Fil: Guisado Pintado, Emilia. Facultad de Geografia E Historia ; Universidad de Sevilla;
Fil: Isla, Manuel Fermín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
EGU General Assembly 2023
Vienna
Austria
European Geosciences Union
Materia
MAJOR STORMS
SPITS
GEOMORPHOLOGY
PUNTA RASA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/228879

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spelling Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in ArgentinaGuisado Pintado, EmiliaIsla, Manuel FermínMAJOR STORMSSPITSGEOMORPHOLOGYPUNTA RASAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Sandy coastal systems are very dynamic systems in which morphological changes occur overdifferent time scales that ranges from hours to decades. However, it has been widely reported thatmajor storms are the main responsible of the most significant changes in short to medium timescales. Major storms have been defined using a variety of environmental variables, but they arenormally associated with high values of four main parameters: 1) Wave heights (Hs); 2) Duration(Du); or 3) Frequency (Fq); 4) Orientation (Or).In this study we aim to characterise types of major storms and to categorize morphologicalimpacts over a hybrid coastal system. The study site, known as Punta Rasa, is located in theSamborombón bay in the outer part of the Río de La Plata estuary (Argentina) and corresponds toa zone of interaction between a large sandy spit and a backwash tidal flat system. Methods usedcombine statistical analysis of wave climate time-series, analysis of wave energy patterns throughnearshore numerical modelling (SWAN) and comparison of pre- and post-storm morphologicalchanges using satellite images derived indexes (e.g. NDWI).Results allowed to characterise four types of major storms impacting the study area: High-EnergyStorms (HES), defined by an average storm Hs below the 1% exceedance (> 2.6 m), Long-LivedStorms (LLS) represented by an exceedance of the 1% of Du (> 60 hours), Storm Groups (SG) inwhich storm frequency is less than 6 days and Northeastern moderate storms (NMS) defined bytheir eastern, onshore oriented direction. Under HES and NSM storms erosional areas aredominant over depositional (62.34%), which most of the system showing shoreline retreat and agrowth of the end spit area. For LLS and SG storms the morphological impact varies alongshorewith a general flattens of the end spit (showing a ‘rounded-shape’ morphology) and erosionalhotspots over the southeastern coastal section.Fil: Guisado Pintado, Emilia. Facultad de Geografia E Historia ; Universidad de Sevilla;Fil: Isla, Manuel Fermín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaEGU General Assembly 2023ViennaAustriaEuropean Geosciences UnionCopernicus Publications2023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/228879Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina; EGU General Assembly 2023; Vienna; Austria; 2023; 1-1CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu23-15658info:eu-repo/semantics/altIdentifier/url/https://meetingorganizer.copernicus.org/EGU23/EGU23-15658.htmlInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:19:44Zoai:ri.conicet.gov.ar:11336/228879instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:19:45.149CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina
title Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina
spellingShingle Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina
Guisado Pintado, Emilia
MAJOR STORMS
SPITS
GEOMORPHOLOGY
PUNTA RASA
title_short Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina
title_full Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina
title_fullStr Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina
title_full_unstemmed Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina
title_sort Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina
dc.creator.none.fl_str_mv Guisado Pintado, Emilia
Isla, Manuel Fermín
author Guisado Pintado, Emilia
author_facet Guisado Pintado, Emilia
Isla, Manuel Fermín
author_role author
author2 Isla, Manuel Fermín
author2_role author
dc.subject.none.fl_str_mv MAJOR STORMS
SPITS
GEOMORPHOLOGY
PUNTA RASA
topic MAJOR STORMS
SPITS
GEOMORPHOLOGY
PUNTA RASA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Sandy coastal systems are very dynamic systems in which morphological changes occur overdifferent time scales that ranges from hours to decades. However, it has been widely reported thatmajor storms are the main responsible of the most significant changes in short to medium timescales. Major storms have been defined using a variety of environmental variables, but they arenormally associated with high values of four main parameters: 1) Wave heights (Hs); 2) Duration(Du); or 3) Frequency (Fq); 4) Orientation (Or).In this study we aim to characterise types of major storms and to categorize morphologicalimpacts over a hybrid coastal system. The study site, known as Punta Rasa, is located in theSamborombón bay in the outer part of the Río de La Plata estuary (Argentina) and corresponds toa zone of interaction between a large sandy spit and a backwash tidal flat system. Methods usedcombine statistical analysis of wave climate time-series, analysis of wave energy patterns throughnearshore numerical modelling (SWAN) and comparison of pre- and post-storm morphologicalchanges using satellite images derived indexes (e.g. NDWI).Results allowed to characterise four types of major storms impacting the study area: High-EnergyStorms (HES), defined by an average storm Hs below the 1% exceedance (> 2.6 m), Long-LivedStorms (LLS) represented by an exceedance of the 1% of Du (> 60 hours), Storm Groups (SG) inwhich storm frequency is less than 6 days and Northeastern moderate storms (NMS) defined bytheir eastern, onshore oriented direction. Under HES and NSM storms erosional areas aredominant over depositional (62.34%), which most of the system showing shoreline retreat and agrowth of the end spit area. For LLS and SG storms the morphological impact varies alongshorewith a general flattens of the end spit (showing a ‘rounded-shape’ morphology) and erosionalhotspots over the southeastern coastal section.
Fil: Guisado Pintado, Emilia. Facultad de Geografia E Historia ; Universidad de Sevilla;
Fil: Isla, Manuel Fermín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
EGU General Assembly 2023
Vienna
Austria
European Geosciences Union
description Sandy coastal systems are very dynamic systems in which morphological changes occur overdifferent time scales that ranges from hours to decades. However, it has been widely reported thatmajor storms are the main responsible of the most significant changes in short to medium timescales. Major storms have been defined using a variety of environmental variables, but they arenormally associated with high values of four main parameters: 1) Wave heights (Hs); 2) Duration(Du); or 3) Frequency (Fq); 4) Orientation (Or).In this study we aim to characterise types of major storms and to categorize morphologicalimpacts over a hybrid coastal system. The study site, known as Punta Rasa, is located in theSamborombón bay in the outer part of the Río de La Plata estuary (Argentina) and corresponds toa zone of interaction between a large sandy spit and a backwash tidal flat system. Methods usedcombine statistical analysis of wave climate time-series, analysis of wave energy patterns throughnearshore numerical modelling (SWAN) and comparison of pre- and post-storm morphologicalchanges using satellite images derived indexes (e.g. NDWI).Results allowed to characterise four types of major storms impacting the study area: High-EnergyStorms (HES), defined by an average storm Hs below the 1% exceedance (> 2.6 m), Long-LivedStorms (LLS) represented by an exceedance of the 1% of Du (> 60 hours), Storm Groups (SG) inwhich storm frequency is less than 6 days and Northeastern moderate storms (NMS) defined bytheir eastern, onshore oriented direction. Under HES and NSM storms erosional areas aredominant over depositional (62.34%), which most of the system showing shoreline retreat and agrowth of the end spit area. For LLS and SG storms the morphological impact varies alongshorewith a general flattens of the end spit (showing a ‘rounded-shape’ morphology) and erosionalhotspots over the southeastern coastal section.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/228879
Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina; EGU General Assembly 2023; Vienna; Austria; 2023; 1-1
CONICET Digital
CONICET
url http://hdl.handle.net/11336/228879
identifier_str_mv Major storms influence on the morphological evolution of a hybrid spit-tidal flat system in Argentina; EGU General Assembly 2023; Vienna; Austria; 2023; 1-1
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.5194/egusphere-egu23-15658
info:eu-repo/semantics/altIdentifier/url/https://meetingorganizer.copernicus.org/EGU23/EGU23-15658.html
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
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rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Copernicus Publications
publisher.none.fl_str_mv Copernicus Publications
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
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