Spatial variation in physio-chemistry in a small river estuary

Chanson, Hubert and Ramsay, Ian (2008) Spatial variation in physio-chemistry in a small river estuary. Water Management: Proceedings of the Institution of Civil Engineers, 161 WM5: 241-251. doi:10.1680/wama.2008.161.5.241

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Author Chanson, Hubert
Ramsay, Ian
Title Spatial variation in physio-chemistry in a small river estuary
Journal name Water Management: Proceedings of the Institution of Civil Engineers   Check publisher's open access policy
ISSN 1741-7589
Publication date 2008-10-01
Year available 2008
Sub-type Article (original research)
DOI 10.1680/wama.2008.161.5.241
Open Access Status File (Publisher version)
Volume 161
Issue WM5
Start page 241
End page 251
Total pages 11
Place of publication London, U.K.
Publisher ICE Publishing
Collection year 2008
Language eng
Subject 290000 Engineering and Technology
290800 Civil Engineering
290802 Water and Sanitary Engineering
290899 Civil Engineering not elsewhere classified
291800 Interdisciplinary Engineering
Abstract The understanding of riverine and estuarine mixing processes remains limited, and the predictions are highly sensitive to specific features of the natural system. One reason is the very complex variations of hydrodynamic and physio-chemical properties with the tidal phase. This study presents the results of two field works during which a range of flow and chemical parameters were recorded simultaneously at several locations along a small sub-tropical estuary. The studies were conducted in contrasted conditions: wet and dry conditions. The field measurements indicated that the hydrodynamics and water conductivity were dominated by the tidal forcing, and to a lesser extent by the freshwater inputs. There were generally significantly greater differences between longitudinal sites than between vertical depths, although some marked differences were observed between the upper and lower estuarine zones. The comparative results between wet and dry field studies illustrated some marked stratification in wet weather along all the estuary, implying that the surface samples were not representative of the average water column properties. Overall the complexity of the hydrodynamics and water quality has some impact on the water quality modelling of the system.
Keyword Water quality
Subtropical river and estuary
Long-term monitoring
Longitudinal variations
Field measurements
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes The full bibliographic details are : CHANSON, H., and RAMSAY, H. (2008). "Spatial Variations in Physio-Chemistry in a Small Sub-Tropical River Estuary." Water Management, Proceedings of the Institution of Civil Engineers, UK, Vol. 161, No. WM5, pp. 241-251 & Cover photograph (DOI: 10.1680/wama.2008.161.5.241) (ISSN 1741-7589 [Print] 1751-7729 [Online]).

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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Created: Fri, 26 Dec 2008, 11:07:37 EST by Hubert Chanson on behalf of School of Civil Engineering