Morphodynamic modelling of a wave-dominated tidal inlet : the Albufeira lagoon
Wave-dominated tidal inlets are very dynamic coastal systems, whose morphology is continuously shaped by the combined action of the waves and the tides. The rapid morphological changes they experience impact directly their ecological and socio-economic environments. In order to implement adequate re...
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ftinsu:oai:HAL:tel-01127011v1 2023-05-15T17:32:59+02:00 Morphodynamic modelling of a wave-dominated tidal inlet : the Albufeira lagoon Modélisation morphodynamique d'une embouchure tidale dominée par la houle : la lagune d'Albufeira Dodet, Guillaume LIttoral ENvironnement et Sociétés - UMR 7266 (LIENSs) Institut national des sciences de l'Univers (INSU - CNRS)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Université de La Rochelle André Fortunato Xavier Bertin 2013-12-19 https://theses.hal.science/tel-01127011 https://theses.hal.science/tel-01127011/document https://theses.hal.science/tel-01127011/file/2013LAROS413.pdf en eng HAL CCSD NNT: 2013LAROS413 tel-01127011 https://theses.hal.science/tel-01127011 https://theses.hal.science/tel-01127011/document https://theses.hal.science/tel-01127011/file/2013LAROS413.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-01127011 Earth Sciences. Université de La Rochelle, 2013. English. ⟨NNT : 2013LAROS413⟩ Morphodynamic modelling Regional wave modelling Data analysis Ephemeral inlet dynamics Wave climate variability North-Atlantic Oscillation Wave-current interactions Western Iberia Margin Modélisation morphodynamique Modèle régional de vagues Analyse de données Dynamique des embouchures tidales éphémères Variabilité du climat de vagues Oscillation Nord-Atlantique Interactions vague-courant Marge ouest-ibérique [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/doctoralThesis Theses 2013 ftinsu 2023-02-08T18:35:25Z Wave-dominated tidal inlets are very dynamic coastal systems, whose morphology is continuously shaped by the combined action of the waves and the tides. The rapid morphological changes they experience impact directly their ecological and socio-economic environments. In order to implement adequate regulations for the sustainable management of tidal inlets, systematic environmental studies are necessary. The main objective of this PhD research work is to gain a better understanding of the physical processes that control the morphological evolutions of an ephemeral tidal inlet in Portugal - the Albufeira Lagoon inlet - based on the analysis of hydrodynamic and topographic data and on the results of a newly developed morphodynamic modelling system. The processes that impact the dynamics of the inlet at short time-scales, particularly those related to wave-current interactions, are investigated through the application of the modelling system to the inlet. The seasonal modulations of the wave climate and mean sea level strongly affect the sediment dynamics of the inlet and contribute to the natural closure of the inlet during the winter period. Long-term processes are also investigated based on a 65-year hindcast of mean wave parameters at regional and local scales. The large inter-annual variability of the wave climate and the associated longshore sediment transport – both correlated to the North-Atlantic Oscillation – are proposed to explain the differences in the morphological behaviour of the inlet-lagoon system at pluri-annual time-scales. Les embouchures tidales dominées par la houle sont des systèmes côtiers particulièrement dynamiques dont la morphologie est continuellement remodelée par l’action des vagues et de la marée. Les rapides évolutions morphologiques auxquelles elles sont sujettes impactent directement leurs environnements écologiques et socio-économiques. Afin de mettre en œuvre des réglementations adaptées à la gestion durable des embouchures tidales, des études environnementales systématiques ... Doctoral or Postdoctoral Thesis North Atlantic North Atlantic oscillation Institut national des sciences de l'Univers: HAL-INSU Houle ENVELOPE(141.190,141.190,-66.700,-66.700) Lagoon Inlet ENVELOPE(-131.903,-131.903,52.928,52.928) |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Morphodynamic modelling Regional wave modelling Data analysis Ephemeral inlet dynamics Wave climate variability North-Atlantic Oscillation Wave-current interactions Western Iberia Margin Modélisation morphodynamique Modèle régional de vagues Analyse de données Dynamique des embouchures tidales éphémères Variabilité du climat de vagues Oscillation Nord-Atlantique Interactions vague-courant Marge ouest-ibérique [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Morphodynamic modelling Regional wave modelling Data analysis Ephemeral inlet dynamics Wave climate variability North-Atlantic Oscillation Wave-current interactions Western Iberia Margin Modélisation morphodynamique Modèle régional de vagues Analyse de données Dynamique des embouchures tidales éphémères Variabilité du climat de vagues Oscillation Nord-Atlantique Interactions vague-courant Marge ouest-ibérique [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Dodet, Guillaume Morphodynamic modelling of a wave-dominated tidal inlet : the Albufeira lagoon |
topic_facet |
Morphodynamic modelling Regional wave modelling Data analysis Ephemeral inlet dynamics Wave climate variability North-Atlantic Oscillation Wave-current interactions Western Iberia Margin Modélisation morphodynamique Modèle régional de vagues Analyse de données Dynamique des embouchures tidales éphémères Variabilité du climat de vagues Oscillation Nord-Atlantique Interactions vague-courant Marge ouest-ibérique [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
Wave-dominated tidal inlets are very dynamic coastal systems, whose morphology is continuously shaped by the combined action of the waves and the tides. The rapid morphological changes they experience impact directly their ecological and socio-economic environments. In order to implement adequate regulations for the sustainable management of tidal inlets, systematic environmental studies are necessary. The main objective of this PhD research work is to gain a better understanding of the physical processes that control the morphological evolutions of an ephemeral tidal inlet in Portugal - the Albufeira Lagoon inlet - based on the analysis of hydrodynamic and topographic data and on the results of a newly developed morphodynamic modelling system. The processes that impact the dynamics of the inlet at short time-scales, particularly those related to wave-current interactions, are investigated through the application of the modelling system to the inlet. The seasonal modulations of the wave climate and mean sea level strongly affect the sediment dynamics of the inlet and contribute to the natural closure of the inlet during the winter period. Long-term processes are also investigated based on a 65-year hindcast of mean wave parameters at regional and local scales. The large inter-annual variability of the wave climate and the associated longshore sediment transport – both correlated to the North-Atlantic Oscillation – are proposed to explain the differences in the morphological behaviour of the inlet-lagoon system at pluri-annual time-scales. Les embouchures tidales dominées par la houle sont des systèmes côtiers particulièrement dynamiques dont la morphologie est continuellement remodelée par l’action des vagues et de la marée. Les rapides évolutions morphologiques auxquelles elles sont sujettes impactent directement leurs environnements écologiques et socio-économiques. Afin de mettre en œuvre des réglementations adaptées à la gestion durable des embouchures tidales, des études environnementales systématiques ... |
author2 |
LIttoral ENvironnement et Sociétés - UMR 7266 (LIENSs) Institut national des sciences de l'Univers (INSU - CNRS)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Université de La Rochelle André Fortunato Xavier Bertin |
format |
Doctoral or Postdoctoral Thesis |
author |
Dodet, Guillaume |
author_facet |
Dodet, Guillaume |
author_sort |
Dodet, Guillaume |
title |
Morphodynamic modelling of a wave-dominated tidal inlet : the Albufeira lagoon |
title_short |
Morphodynamic modelling of a wave-dominated tidal inlet : the Albufeira lagoon |
title_full |
Morphodynamic modelling of a wave-dominated tidal inlet : the Albufeira lagoon |
title_fullStr |
Morphodynamic modelling of a wave-dominated tidal inlet : the Albufeira lagoon |
title_full_unstemmed |
Morphodynamic modelling of a wave-dominated tidal inlet : the Albufeira lagoon |
title_sort |
morphodynamic modelling of a wave-dominated tidal inlet : the albufeira lagoon |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://theses.hal.science/tel-01127011 https://theses.hal.science/tel-01127011/document https://theses.hal.science/tel-01127011/file/2013LAROS413.pdf |
long_lat |
ENVELOPE(141.190,141.190,-66.700,-66.700) ENVELOPE(-131.903,-131.903,52.928,52.928) |
geographic |
Houle Lagoon Inlet |
geographic_facet |
Houle Lagoon Inlet |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
https://theses.hal.science/tel-01127011 Earth Sciences. Université de La Rochelle, 2013. English. ⟨NNT : 2013LAROS413⟩ |
op_relation |
NNT: 2013LAROS413 tel-01127011 https://theses.hal.science/tel-01127011 https://theses.hal.science/tel-01127011/document https://theses.hal.science/tel-01127011/file/2013LAROS413.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766131326037000192 |