Water exchanges between a multi-inlet lagoon and the ocean: the role of forcing mechanisms

Fabião, João Pedro Farinha; Rodrigues, Marta; Fortunato, A. B.; Jacob, José; Cravo, Alexandra

doi:10.1007/s10236-015-0918-7

Cited by 27 publications

(14 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Due to the dynamic connectivity between inlets, dynamics of the shallow lagoon-inlet-coastal ocean system with multiple inlets (e.g., the Rio Formosa coastal lagoon in the southern coast of Portugal and the western Dutch Wadden Sea) are complex. Fabião et al (2016) and Duran-Matute et al (2016) indicated that remote transport of the water flux was synergistically controlled by tide, wind, shallow-water process, and inlet geometry. By closing the remote inlet, variations of the circulation near the OCI and CI were at different levels (i.e., comparing Cases CW1 minus CW3 and CW1 minus CW4 in Fig.…”

Section: Effect Of Inlet Closure On Inlet Dynamicsmentioning

confidence: 99%

“…The conceptual model used by Orescanin et al (2014), however, is limited within an idealized system owing to the simplification of model domain and the assumption of a uniform wind field. Using the unstructuredgrid-based model with spatiotemporally varying winds, Fabião et al (2016) and Kang et al (2017) identified that wind direction significantly impacts water exchanges of the complex multipleinlet system, especially under strong wind conditions. However, both models were tested in the absence of waves, which play a prominent role in the inlet circulation and should be taken into account (Wargula et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wave–current dynamics and interactions near the two inlets of a shallow lagoon–inlet–coastal ocean system under hurricane conditions

Mao

Xia

2018

Ocean Modelling

View full text Add to dashboard Cite

Inlet wave-current dynamics and interactions are vital to the physical exchanges in a lagoon-inlet-coastal ocean system. A wave-current coupled model was calibrated and validated against observational data, and then applied to investigate the complex dynamics in the Maryland Coastal Bays during Hurricane Irene (2011). With the inclusion of wave-current interactions, skill in simulating the maximum total water surface elevation was improved under hurricane conditions. Major processes of wave-current interactions include the radiation stressinduced setup and current, and water depth variation-induced wave breaking. Wave-induced bottom friction and sea surface roughness are of secondary importance to nearshore dynamics. Further investigations reveal that tidal currents and ocean swells dominate inlet circulation and wave dynamics, respectively. Physical dynamics within the paired inlets are regulated by local winds, wave-current interactions, and unique inlet characteristics. However, wave dynamics in the lagoon and behind inlets are dominated by local winds and modulated by the shallow bathymetry. With the hypothetical closure of any inlet, wave-current dynamics and interactions behind the corresponding inlet are strongly altered, whereas they are weakly influenced from a remote one. Occasionally, the circulation near the narrow Ocean City Inlet area is influenced moderately by artificially shutting down the relatively wider Chincoteague Inlet. The finding from this work on the Maryland Coastal Bays can be beneficial to understanding similar lagoon-inlet-coastal ocean systems elsewhere. Longuet-Higgins and Stewart (1964), who proposed that two-dimensional (2D), depth-averaged wave radiation stress is responsible for generating the wave-induced setup and longshore currents in the surf zone. This proposal was verified by observations in the shallow regions of North Carolina (Lentz et al., 1999; Lentz and Raubenheimer, 1999), Kaneohe Bay, Hawaii (Lowe et al., 2009), and the Red Sea (Lentz et al., 2016). Perrie et al. (2003) determined that the conversion of excessive momentum fluxes from waves to surface currents begins to take effect during intense storms. Recently, Mellor (2005, 2013, 2015) extended the work of Longuet-Higgins and Stewart (1964) and derived vertically dependent equations of radiation stress. Subsequently, the significance of this newly developed three-dimensional (3D) radiation stress was recognized in shallow-water dynamics from idealized numerical experiments (

show abstract

Section: Effect Of Inlet Closure On Inlet Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wave–current dynamics and interactions near the two inlets of a shallow lagoon–inlet–coastal ocean system under hurricane conditions

Mao

Xia

2018

Ocean Modelling

View full text Add to dashboard Cite

show abstract

“…Inclui módulos de agitação marítima (Roland et al, 2012), qualidade da água (Rodrigues et al, 2009(Rodrigues et al, , 2011, transporte de hidrocarbonetos , morfodinâmica (Pinto et al, 2012, Guerin et al, 2016, entre outros. Tem sido abundantemente utilizado na costa Portuguesa (Guerreiro et al, 2015;Fortunato et al 2016Fortunato et al , 2017bFabião et al, 2016;.…”

Section: Sistema De Modelaçãounclassified

“…Esta implementação é efetuada a partir da aplicação do modelo hidrodinâmico SCHISM, efetuado no âmbito do desenvolvimento do observatório UBEST , devidamente calibrado e validado com dados de campo (Fabião et al, 2016).…”

Section: Aplicação à Previsão Da Circulação Na Ria Formosaunclassified

Plataforma interativa e integradora para gestão do risco de inundação costeira

Oliveira¹,

Fortunato²,

Freire³

et al. 2018

View full text Add to dashboard Cite

ResumoA necessidade de prever eventos extremos e de antecipar os seus impactos tem motivado o desenvolvimento de sistemas de previsão em tempo real. A operação destes sistemas é, no entanto, exigente, quer no estabelecimento de novos casos, quer na sua manutenção com fiabilidade e robustez, limitando a sua adoção generalizada para a totalidade das zonas costeiras. Para ultrapassar esta lacuna, o LNEC e o LIP desenvolveram uma plataforma para estabelecer, de forma interativa, um sistema de previsão em tempo real da circulação de um trecho costeiro à escolha do utilizador. Esta aplicação, designada OPENCoastS.pt, permitirá apoiar a gestão da zona costeira, antecipar eventos de perigo e planear a resposta de emergência. A aplicação é baseada no WIFF -Water Information Forecast Framework, o sistema de previsão em tempo real do LNEC, aplicável desde o oceano até à bacia hidrográfica. Apresenta-se aqui a conceção deste serviço para a circulação na costa Portuguesa e ilustra-se a sua versatilidade num caso de estudo. IntroduçãoOs sistemas de previsão em tempo real (SPTR) têm vindo a ser desenvolvidos há mais de 2 décadas para os sistemas aquáticos naturais, com prevalência para a previsão das inundações de origem fluvial (Moore et al., 1990) e para a circulação e agitação marítima nas zonas costeiras (Baptista, 2006;Rusu et al., 2009;Anselmi-Molina et al., 2012), estando hoje em operação num vasto número de entidades gestoras.Tipicamente o desenvolvimento de um sistema de previsão parte do conhecimento aprofundado da dinâmica do meio natural de interesse, materializado no estabelecimento de um modelo numérico de eleição, devidamente calibrado e validado. O sistema de previsão é depois construído tendo como base a implementação local do modelo, particularizado para as condições de forçamento disponíveis para o domínio de estudo e customizado para o estabelecimento de serviços de resposta às necessidades das entidades que gerem o meio natural em causa. Esta abordagem permite obter um primeiro sistema operacional que cumpre na totalidade os requisitos imediatos dos utilizadores, mas que não permite a sua atualização de forma ágil nem a sua generalização a outros sistemas. É exemplo desta abordagem o sistema de previsão em tempo real do LNEC, WIFF -Water Information Forecast Framework, suportado pelo sistema de modelação SCHISM (Zhang et al., 2016) e aplicável à previsão da circulação devida a marés, ondas, sobre-elevação meteorológica e caudal fluvial, da agitação marítima assim como da qualidade da água microbiológica (na cidade e nos meios recetores) e de derrames de hidrocarbonetos , Fortunato et al., 2017a, David et al., 2013. Este sistema apresenta uma abordagem e conceptualização genérica, mas cada implementação a um sistema é customizada através da implementação de software adaptado ao meio em estudo.

show abstract

“…For multi‐inlet coastal systems, residual (horizontal) circulation is influenced by winds, which alters salt transports in each inlet. Examples include the Dutch Wadden Sea (Duran‐Matute et al, 2014, 2016), the Ria Formosa (south of Portugal) multi‐inlet lagoon (Fabião et al, 2016), the Altamaha River Estuary (C. Li, 2013), and the lagoon of Venice (Bellafiore et al, 2008). While the effect of winds on saltwater intrusion and circulation has been studied in other cases, relatively little is known about the role of wind on saltwater intrusion in estuaries where morphology has been significantly modified through the construction of shipping channels and other structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Dikes on Saltwater Intrusion Under Various Wind Conditions in the Changjiang Estuary

Zhu

Chant

et al. 2020

JGR Oceans

View full text Add to dashboard Cite

To improve navigation, the deep waterway project (DWP) was implemented in the North Passage of the Changjiang Estuary in 1998, which includes a deep channel and two dikes protecting it. By altering estuarine morphology, the DWP can affect saltwater intrusion and mixing, with implications for drinking water intake and supply. In this study, we employ a numerical model to study the influence of dikes of the DWP on saltwater intrusion in the estuary under the climatic and persistent strong northerly wind conditions that occurred in February 2014. The model results show that the dikes prevent the southward transport of relatively low‐salinity water at the mouth of the North Channel (NC) under climatic wind conditions, resulting in the weakening of saltwater intrusion and mixing in this channel. Under persistent strong northerly wind conditions, relatively high‐salinity water is transported southward to the mouth of NC and blocked by the dikes causing a water level rise at the mouth of the NC. As a result, a large amount of high‐salinity water advected into the NC and then out to the sea from the South Chanel, forming a counterclockwise horizontal circulation. The salinity increases abnormally, but mixing decreases in the NC for no more salinity variance input with the implementation of the DWP. Overall, the DWP favors water intake for the reservoir in NC under climatic wind conditions and is unfavorable to water intake under persistent strong northerly winds (>9 m/s), which can lead to extremely severe saltwater intrusion.

show abstract

Water exchanges between a multi-inlet lagoon and the ocean: the role of forcing mechanisms

Cited by 27 publications

References 38 publications

Wave–current dynamics and interactions near the two inlets of a shallow lagoon–inlet–coastal ocean system under hurricane conditions

Wave–current dynamics and interactions near the two inlets of a shallow lagoon–inlet–coastal ocean system under hurricane conditions

Plataforma interativa e integradora para gestão do risco de inundação costeira

Effect of Dikes on Saltwater Intrusion Under Various Wind Conditions in the Changjiang Estuary

Contact Info

Product

Resources

About