Seasonal Variability of the Water Residence Time in the Madura Strait, East Java, Indonesia

Article type: Research Article

Authors: Nugrahadi, Mochamad Saleh^; | Duwe, Kurt | Schroeder, Friedhelm | Goldmann, Dirk

Affiliations: The Agency for the Assessment and Application of Technology (BPPT), Jl. M.H. Thamrin 8, Jakarta 10340, Indonesia | Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research, Max-Planck-Straße 1, 21502 Geesthacht, Germany | HYDROMOD GbR, Hafenstr. 32b, D-22880 Wedel, Germany

Note: [] Corresponding Author. E-mail: [email protected]

Abstract: A Lagrangian particle tracer method embedded within a 3-D finite difference hydrodynamic model is used to study the transport and exchange processes in a semi-enclosed water of Madura Strait, East Java, Indonesia. The 3-D hydrodynamic model forcing functions consist of tidal elevation at north and east open boundary, river discharge of Brantas River estuaries, and monsoonal wind. The validated model successfully estimated the variability of residence time. The calculation results show that water residence times in Madura Strait and especially in its tributaries are mainly governed by the strength of river discharges, whereas the direction of advection is influenced mainly by monsoon wind directions and less by the tide-induced residual current.

Keywords: Hydrodynamics, water residence time, Lagrangian model, Brantas River, Madura Strait

Journal: Asian Journal of Water, Environment and Pollution, vol. 10, no. 1, pp. 117-128, 2013