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The best-fit model to predict spatial sedimentation rates at Loagan Bunut Lake, Miri, Sarawak

By R. B. Dagang, S. Lau and A. K. Sayok

Abstract

Physical laws are fundamental to natural systems across many fields in environmental science. For example, a study of fluid dynamics can be used to describe the dispersion of water pollutants. In this study, the best-fit model was produced to predict spatial sedimentation rates at Loagan Bunut Lake. The lake is a flood plain lake that is located within the boundaries of Loagan Bunut National Park in the northeast part of the state of Sarawak. Twenty-two cylindrical traps were installed at the lake. The traps were placed in November 2005 until April 2008. Each sample was collected after about four to five months of deployment. A dry sedimentation rates and linear distances from Trap 1 located at the confluence of Bunut River were measured. Based on strong coefficient of determinant, the best-fit model of sedimentation rates distributed by advective force at the distance 0-600 m from Bunut River was S = So e-kx or S = So e Rx/ws. Reynold ’s theorem of mass flux was used to explain coefficient k in the equation

Topics: Cylindrical traps, Environmental physics, Loagan Bunut Lake, Sarawak, Sedimentation rate
Publisher: Asian Network for Scientific Information
Year: 2011
DOI identifier: 10.3923/jas.2011.1465.1468
OAI identifier: oai:vtl.cc.swin.edu.au:swin:21412
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