Tidal variations of flow convergence, shear, and stratification at the Rio de la Plata estuary turbidity front

@article{Framian2008TidalVO,
  title={Tidal variations of flow convergence, shear, and stratification at the Rio de la Plata estuary turbidity front},
  author={Mariana B. Frami{\~n}an and Arnoldo Valle‐Levinson and H{\'e}ctor Hito Sep{\'u}lveda and Otis B. Brown},
  journal={Journal of Geophysical Research},
  year={2008},
  volume={113}
}
[1] Intratidal variability of density and velocity fields is investigated at the turbidity front of the Rio de la Plata Estuary, South America. Current velocity and temperature-salinity profiles collected in August 1999 along a repeated transect crossing the front are analyzed. Horizontal and vertical gradients, stability of the front, convergence zones, and transverse flow associated to the frontal boundary are described. Strong horizontal convergence of the across-front velocity and build up… 

Figures and Tables from this paper

Horizontal transport, mixing and retention in a large, shallow estuary: Río de la Plata
We use field data and a high-resolution three-dimensional (3D) hydrodynamic numerical model to investigate the horizontal transport and dispersion characteristics in the upper reaches of the shallow
Very near-bottom tidal straining in a sea strait
[1] Large vertical temperature differences up to 3°C m−1 are observed very near ( 1 m s−1. The upper sensor at 0.42 m above the bottom (mab) follows typical temperature variations higher up in the
Very near‐bottom tidal straining in a sea strait
Large vertical temperature differences up to 3°C m−1 are observed very near (<0.5 m from) the 2‐m sand‐waves bottom in a 20–25 m deep sea strait dominated by tidal flows >1 m s−1. The upper sensor at
Temporal and Spatial Variability Scales of Salinity at a Large Microtidal Estuary
The Río de la Plata is a large fluvial–estuarine–sea system discharging into the southwestern Atlantic Ocean, which has relevant features such as high fluvial discharge, microtidal astronomical tidal
The Relation of Cross-sectional Residual Current and Stratification during Spring and Neap Tidal Cycle at Seokmo Channel, Han River Estuary Located at South Korea
This study analyzed cross-sectional variations in residual current and strengths of stratification by observing cross-sectional velocity and salinity during spring tide and neap tide, respectively,
Altimeter‐derived seasonal circulation on the southwest Atlantic shelf: 27°–43°S
TLDR
Altimeter sea surface height (SSH) fields are analyzed to define and discuss the seasonal circulation over the wide continental shelf in the SW Atlantic Ocean during 2001-2012 and compare well to previous studies using in situ data and to results from realistic numerical models of the regional circulation.
Investigation on the dynamics of gravity-driven coastal currents
Numerical simulations of buoyant, gravity-driven coastal plumes are summarized and compared to the inviscid geostrophic theory of Thomas & Linden (2007) and to laboratory studies for plumes owing
Physical and biological controls of algal blooms in the Río de la Plata
Coupled three-dimensional hydrodynamic and ecological numerical simulations were used to investigate the role of transport, stagnation zones and dispersion on inter-annual blooms of the diatom
...
...

References

SHOWING 1-10 OF 60 REFERENCES
Flow convergence and stability at a tidal estuarine front: Acoustic Doppler current observations
Characteristics of the flow field in an estuarine frontal zone have been investigated in a field study in the lower James River estuary. Underway sampling with an acoustic Doppler current profiler
Convergence and Downwelling at a River Plume Front
Abstract The small-scale structure of the circulation and hydrography at the frontal boundary of the Connecticut River plume in Long Island Sound has been resolved using a novel combination of
Residual and tidal flow at a tidal mixing front in the North Sea
Tidal straining, density currents, and stirring in the control of estuarine stratification
Buoyancy input as fresh water exerts a stratifying influence in estuaries and adjacent coastal waters. Predicting the development and breakdown of such stratification is an inherently more difficult
Observations of subtidal and tidal flow in the Rı́o de la Plata Estuary
Residual circulation in shallow estuaries: 1. Highly stratified, narrow estuaries
Long-wave theory and simple turbulence closures have been used to show that three distinct types of circulation (highly stratified, weakly stratified, and partially mixed) arise in narrow, shallow
The Cycle of Turbulent Dissipation in the Presence of Tidal Straining
In regions of large horizontal density gradient, tidal straining acts to produce a periodic component of stratification that interacts with turbulent mixing to control water column structure and
The Formation of Estuarine Turbidity Maxima Due to Density Effects in the Salt Wedge. A Hydrodynamic Process Study
Abstract By means of a numerical model of an idealized flat-bottom estuary, the paper studies the hydrodynamic control of the turbidity zone by the combined effect of the salt wedge and tidal
Observations and Modelling of Periodic Stratification in the Upper York River Estuary, Virginia
Abstract Two current meter moorings were deployed simultaneously for 61 days during the winter of 1989-90 in the Upper York River Estuary, Virginia, at a separation along the estuary axis of one
...
...