Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Study on nutrient distribution and interaction with sediments in a macro-tidal estuary

Liang, Dongfang, Wang, Xiaolin, Bockelmann-Evans, Bettina Nicole ORCID: and Falconer, Roger Alexander ORCID: 2013. Study on nutrient distribution and interaction with sediments in a macro-tidal estuary. Advances in Water Resources 52 , pp. 207-220. 10.1016/j.advwatres.2012.11.015

Full text not available from this repository.


An integrated hydro-environmental model has been developed for predicting the distribution of nutrients in estuarine and coastal waters. This paper also reports on an application of the model to the Loughor Estuary in the U.K., which has a high tidal range. The horizontal two-dimensional model considers the hydrodynamic, sediment transport, dissolved oxygen and nutrient cycling processes. In particular, the effect of sediment suspension and deposition on the nutrient distribution in the water column has been included in the model. A TVD-MacCormack scheme has been adopted to numerically solve the coupled partial differential equations. Field surveys and laboratory experiments in connection with the Loughor Estuary were conducted to obtain measured data for model calibration and verification. It was found that the linear isotherm model gave a good approximation of the adsorption/desorption processes over the range of nitrogen and phosphorus concentrations measured in the natural estuary. Through experiments on the collected soil samples, the salinity-dependent partition ratios between the adsorbed and dissolved nutrients were determined. The results of the established model showed good agreement with the measured data. Finally, the model was used to examine the implications of changing the sewage effluent discharge scheme on the nutrient distributions in the estuary.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TC Hydraulic engineering. Ocean engineering
Uncontrolled Keywords: Nutrients; Water quality; Shallow water flows; Sediment transport; Adsorption/desorption; Estuaries
Publisher: Elsevier
ISSN: 0309-1708
Funders: Royal Society
Last Modified: 21 Oct 2022 10:44

Citation Data

Cited 29 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item