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| Muller, Fll; Balls, Pw; Tranter, M. |
| A first-order mass balance of twelve minor and trace elements in the coastal sea area of the Firth of Clyde is presented for the period August 1989-July 1990. It is based on our own four sets of chemical data collected in the Clyde Estuary and Firth of Clyde over that period, complemented by independent information relating to water column hydrography, rainfall, wind speed, river discharge, as well as sewage sludge and dredged material disposed of at sea. Terrigenous inputs were measured or estimated as continuous functions of time. Mean exchange rates with the open shelf were calculated over four periods representative of 77 % of the one-year period considered here. All these fluxes were subsequently converted to monthly values to facilitate... |
| Tipo: Text |
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| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00097/20793/18417.pdf |
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| Muller, Fll; Balls, Pw; Tranter, M. |
| A total of 28 chemical variables were measured on water samples taken on an approximately longitudinal section of the Firth of Clyde in August 1989, November 1989, March 1990, July 1990 and March 1991. The data were integrated in a study of the overall processes acting on these variables. The sampling section crossed two mixing zones, i.e. the Clyde Estuary Plume (30 < S < 32) and the Clyde Sea (32 < S < 34), with mixing times of 4-25 days and 60-150 days respectively. The interpretation of the distributional data was complicated in July 1990 by the penetration of an ''older'' water mass originating from one of the five sealochs bordering the Firth of Clyde. Heterogeneous reactions within the Clyde Estuary Plume generally modified the export... |
| Tipo: Text |
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| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00097/20792/18416.pdf |
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| Balls, Pw. |
| The distribution and behaviour of nutrients (nitrate, nitrite, ammonia, silicate and phosphate) have been examined over the course of a year in two major Scottish estuaries, the Forth and Tay. Maximum concentrations of nitrate and silicate in both estuaries occur in winter, when mixing is conservative. By contrast maximum phosphate, ammonia and nitrite concentrations (notably in the Forth) are observed in summer, these are related to lower oxygen concentrations both within the water column and sediments. Phosphate, ammonia and nitrite concentrations are high in the Forth relative to the Tay. Phosphate behaviour in plots for both estuaries show some common features including removal at low salinity, mid estuary inputs and simple dilution at high salinity.... |
| Tipo: Text |
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| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/00100/21160/18779.pdf |
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