The Freshwater-Saltwater Interface and Its Relationship to the Turbidity Maximum in the Tamar Estuary, United Kingdom

Estuaries ◽  
1993 ◽  
Vol 16 (1) ◽  
pp. 126 ◽  
Author(s):  
R. J. Uncles ◽  
J. A. Stephens
Keyword(s):  
United Kingdom ◽  
Turbidity Maximum ◽  
Tamar Estuary

The Behavior of Arsenic in Selected United Kingdom Estuaries

1983 ◽  
Vol 40 (S2) ◽  
pp. s143-s150 ◽  
Author(s):  
W. J. Langston
Keyword(s):  
United Kingdom ◽  
Bottom Sediments ◽  
Coastal Waters ◽  
Estuarine Sediments ◽  
Tamar Estuary ◽  
Physicochemical Conditions ◽  
Dissolved Species

High As concentrations occur in certain United Kingdom estuaries as a result of mineralization and associated processes including mining and metal refining. Analyses of dissolved and particulate As, carried out in estuaries of differing contamination, indicate that As is readily precipitated with Fe during mixing at the freshwater–seawater interface. This gives rise to significant correlations between the two elements in suspended and bottom sediments. More than 80% of the As entering Restronguet Creek, the most contaminated of the estuaries studied, is retained by estuarine sediments, which consequently act as sinks for riverine inputs and limit transport of dissolved species to coastal waters. However, the behavior of As in different estuaries varies with the physicochemical conditions present and the nature of the source. Most significantly, remobilization of sediments is recognized as a feature affecting the cycling of As in the Tamar Estuary.

Observations on Floc Settling Velocities in the Tamar Estuary, United Kingdom

2021 ◽  
Vol 147 (5) ◽  
pp. 04021015
Author(s):  
William H. McAnally ◽  
Ashish J. Mehta ◽  
Andrew J. Manning
Keyword(s):  
United Kingdom ◽  
Tamar Estuary

The turbidity maximum in the Tamar estuary

1993 ◽  
Vol 27 (2-4) ◽  
pp. 121-133 ◽  
Author(s):  
E. J. Darbyshire ◽  
J. R. West
Keyword(s):  
Turbidity Maximum ◽  
Tamar Estuary

Chemical Composition of Suspended Particles in an Estuarine Turbidity Maximum Zone

1983 ◽  
Vol 40 (S1) ◽  
pp. s201-s206 ◽  
Author(s):  
D. H. Loring ◽  
R. T. T. Rantala ◽  
A. W. Morris ◽  
A. J. Bale ◽  
R. J. M. Howland
Keyword(s):  
River Flow ◽  
Suspended Particle ◽  
Suspended Particles ◽  
Turbidity Maximum ◽  
Estuarine Turbidity Maximum ◽  
Tamar Estuary ◽  
Correlation Matrices ◽  
Spatial Differences ◽  
Chemical Conditions ◽  
High River Flow

The detrital and nondetrital elemental compositions of suspended particles in the Tamar Estuary, U.K., have been examined when the estuarine turbidity maximum was well developed and also when high river flow restricted the development of a turbidity maximum. Correlation matrices and 'r'-mode factor analyses were used to identify significant relationships within and between the variances in the fractionated particulate compositions and in the ambient physico-chemical conditions. Marked temporal and spatial differences in the elemental composition of suspended particles were found. At high river flow, suspended particulate compositions throughout the estuary were dominated by dilution and dispersion of an overwhelming flux of riverborne material. Under normal conditions of low riverine particle flux, internal cycling of particles, especially within the turbidity maximum region, controlled the spatial distributions of suspended particle compositions and subsidiary inputs were of greater significance.Key words: estuaries, suspended sediment, particle transport, trace elements

Sorption Behaviour of Waste-Generated Trace Metals in Estuarine Waters

1988 ◽  
Vol 20 (6-7) ◽  
pp. 113-121 ◽  
Author(s):  
G. A. Glegg ◽  
J. G. Titley ◽  
G. E. Millward ◽  
D. R. Glasson ◽  
A. W. Morris
Keyword(s):  
Specific Surface ◽  
Toxic Metal ◽  
Nitrogen Adsorption ◽  
Turbidity Maximum ◽  
Tamar Estuary ◽  
Sorption Behaviour ◽  
Surface Areas ◽  
Adsorption Desorption ◽  
Mn Oxides

Samples of suspended particles have been collected from the turbidity maximum region of the Tamar Estuary, S.W. England. Specific surface areas and porosities of the particles were determined by a BET nitrogen adsorption technique. The role of surface coatings of organic matter and Fe and Mn oxides was examined. The data show that the specific surface area was highest at the turbidity maximum and was associated with high Fe/Mn ratios. The characterised particles were then used in time-dependent adsorption-desorption experiments, with waters from the metal-rich Carnon River, S.W. England. The rates and extents of the sorption processes were interpreted in terms of a two-stage reaction which was related to the microstructures of the particles. Kinetic analyses of the desorption profiles gave rate constants which are of significance in the prediction of the fate of toxic metal wastes discharged into estuaries.

Nature of the Turbidity Maximum in the Tamar Estuary, U.K.

1993 ◽  
Vol 36 (5) ◽  
pp. 413-431 ◽  
Author(s):  
R.J. Uncles ◽  
J.A. Stephens
Keyword(s):  
Turbidity Maximum ◽  
Tamar Estuary

A comparison of the United Kingdom Clinical Aptitude Test (UK-CAT) with a traditional admission selection process

2009 ◽  
pp. 1-6 ◽  
Author(s):  
Nishan Fernando ◽  
Gordon Prescott ◽  
Jennifer Cleland ◽  
Kathryn Greaves ◽  
Hamish McKenzie
Keyword(s):  
United Kingdom ◽  
Selection Process ◽  
Aptitude Test ◽  
The United Kingdom
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