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Reconstructing historic reservoir sedimentation rates using data-based mechanistic modelling.

Rowan, J. S. and Price, L. E. and Fawcett, C. P. and Young, Peter C. (2001) Reconstructing historic reservoir sedimentation rates using data-based mechanistic modelling. Physics and Chemistry of the Earth Part B: Hydrology, Oceans and Atmosphere, 26 (1). pp. 77-82. ISSN 1464-1909

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Abstract

This paper reports an application of data-based mechanistic (DBM) modelling to the study of reservoir sedimentation. A detailed monitoring programme in the catchment of the Wyresdale Park reservoir was used to calibrate a two component DBM sedimentation model. The first component was a non-linear rainfall to suspended sediment load (SSL, kg s−1) model, the second dealt with sediment routing and the trap efficiency of the reservoir. Daily precipitation data for the period 1911–1996 were used to simulate the sedimentation history of the reservoir. The synthetic accretion sequence evidences the effects of climatic forcing and was compared to lake-bed sediment cores independently dated using 137Cs. The synthetic stack showed general agreement with the observed accretion data. Departures in model performance most likely reflect non-stationarity in the system due to local changes in land use and reservoir regulation.

Item Type: Article
Journal or Publication Title: Physics and Chemistry of the Earth Part B: Hydrology, Oceans and Atmosphere
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Arts & Social Sciences > Linguistics & English Language
Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 21576
Deposited By: ep_ss_importer
Deposited On: 22 Jan 2009 09:36
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 15:49
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/21576

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