Water renewal timescales in the Scheldt Estuary

Brye, Benjamin de; Brauwere, Anouk de; Gourgue, Olivier; Delhez, Eric; Deleersnijder, Éric

doi:10.1016/j.jmarsys.2011.10.013

Cited by 59 publications

(38 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The water transport time scale has been used as fundamental parameter for the understanding of the hydroecological dynamics in lagoon environments [Gong et al, 2008;Ferrarin et al, 2008Ferrarin et al, , 2013bWan et al, 2013]. Hydrodynamic time parameters in semiclosed basins can be defined in many different ways depending on the numerical technique used [Takeoka, 1984;Monsen et al, 2002;Delhez et al, 2004;Jouon et al, 2006;Liu et al, 2008;de Brye et al, 2012;Melaku Canu et al, 2012], but there is no unique agreed method of determination.…”

Section: The Transport Time Scalesmentioning

confidence: 99%

Comparative hydrodynamics of 10 Mediterranean lagoons by means of numerical modeling

Umgiesser

Ferrarin

Cucco

et al. 2014

J. Geophys. Res. Oceans

177

135

View full text Add to dashboard Cite

A comparison study between 10 Mediterranean lagoons has been carried out by means of the 3-D numerical model SHYFEM. The investigated basins are the Venice and Marano-Grado lagoons in the Northern Adriatic Sea, the Lesina and Varano lagoons in the Southern Adriatic Sea, the Taranto basin in the Ionian Sea, the Cabras Lagoon in Sardinia, the Ganzirri and Faro lagoons in Sicily, the Mar Menor in Spain, and the Nador Lagoon in Morocco. This study has been focused on hydrodynamics in terms of exchange rates, transport time scale, and mixing. Water exchange depends mainly on the inlet shape and tidal range, but also on the wind regimes in the case of multi-inlet lagoons. Water renewal time, which is mostly determined by the exchange rate, is a powerful concept that allows lagoons to be characterized with a time scale. In the case of the studied lagoons, the renewal time ranged from few days in the Marano-Grado Lagoon up to 1 year in the case of the Mar Menor. The analysis of the renewal time frequency distribution allows identifying subbasins. The numerical study proved to be a useful tool for the intercomparison and classification of the lagoons. These environments range from a leaky type to a choked type of lagoons and give a representative picture of the lagoons situated around the Mediterranean basin. Mixing efficiency turns out to be a function of the morphological complexity, but also of the forcings acting on the system.

show abstract

Section: The Transport Time Scalesmentioning

confidence: 99%

Comparative hydrodynamics of 10 Mediterranean lagoons by means of numerical modeling

Umgiesser

Ferrarin

Cucco

et al. 2014

J. Geophys. Res. Oceans

177

135

View full text Add to dashboard Cite

show abstract

“…However, theoretical analysis is typically not sufficiently powerful when realistic topography or nonlinear terms are considered. Compared to the aforementioned methods, numerical simulation includes advection and diffusion processes in addition to realistic topography and forcing conditions [ Chen , 2007; Liu et al , 2008; Gong et al , 2009; Hong et al , 2010; Liu et al , 2011; de Brye et al , 2012].…”

Section: Introductionmentioning

confidence: 99%

The age of Yellow River water in the Bohai Sea

et al. 2012

View full text Add to dashboard Cite

To quantitatively understand the transport timescales of dissolved material discharged from large rivers into a semienclosed sea, the age of Yellow River water in the Bohai Sea was calculated with the constituent‐oriented age and residence time theory (CART) and particle‐tracking method. Yellow River water has a mean age of 3.0 years for the entire Bohai Sea. The spatial variation of the water age is significant: 1.2 years near the Yellow River estuary but 3.9 years in the Liaodong Bay. However, the temporal variation in water age is insignificant. The water particles released at the river mouth need only several days to reach the estuary area. The great water age (1.2 years) near the Yellow River estuary is caused by the presence of old water particles that initially left this area but returned to this area again. Without the reentry of Yellow River water from the Yellow Sea to the Bohai Sea, the mean age of Yellow River water in the entire Bohai Sea decreases to 1.2 years. Calculations without tidal forcing give a reduction in water age by more than 50%, suggesting that tidal forcing plays the most dominant role in controlling the age of Yellow River water in the Bohai Sea. Calculations without winds give an increase in water age by 20–30%, suggesting that wind forcing is secondary factor to the age of Yellow River water. Changes in discharge of the Yellow River and in thermal stratification have limited influence on the age of Yellow River water.

show abstract

“…The age concentration is an extensive variable; it satisfies a budget equation that can be used to compute the mean age of the constituent. This approach has been applied in a large number of studies (e.g., Gourgue et al 2007;Meier 2007;Plus et al 2009;Bendtsen et al 2009;de Brye et al 2012;Bendtsen and Hansen 2013;Ren et al 2014;Du and Shen 2015).…”

Section: Introductionmentioning

confidence: 99%

“…For instance, in their study of the dynamics of sediments in the Belgian coastal zone, Mercier and Delhez (2007) define two different ages providing a focus, respectively, on the rate of horizontal transport of the suspended matter and on the time spent by sediment flocs in the water column, i.e., on the frequency of deposition-resuspension events. In de Brye et al (2012), two different tracers tagging the freshwater entering from the upstream boundary and the water entering from the coastal area are used to compute two water renewal timescales in the Scheldt Estuary.…”

Section: Introductionmentioning

confidence: 99%

Partial ages: diagnosing transport processes by means of multiple clocks

Mouchet

Cornaton²,

Deleersnijder

et al. 2016

Ocean Dynamics

View full text Add to dashboard Cite

The concept of age is widely used to quantify the transport rate of tracers -or pollutants -in the environment. The age focuses only on the time taken to reach a given location and disregards other aspects of the path followed by the tracer parcel. To keep track of the subregions visited by the tracer parcel along this path, partial ages are defined as the time spent in the different subregions. Partial ages can

show abstract

Water renewal timescales in the Scheldt Estuary

Cited by 59 publications

References 42 publications

Comparative hydrodynamics of 10 Mediterranean lagoons by means of numerical modeling

Comparative hydrodynamics of 10 Mediterranean lagoons by means of numerical modeling

The age of Yellow River water in the Bohai Sea

Partial ages: diagnosing transport processes by means of multiple clocks

Contact Info

Product

Resources

About