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Title: Estimating net transport and mixing using a time-dependent inverse method Authored by: Anohin, V.V., Imberger, J., Ivey, G.N. and Romero, J. Abstract:
A finite-difference inverse method was applied to time-dependent two-dimensional tracer fields from a long narrow water supply reservoir to obtain time-averaged estimates of horizontal and vertical velocities and the vertical eddy diffusivities. The inverse method successfully resolved two major processes observed in the lake during the experiment: wave-induced hypolimnetic flows and wind-driven surface layer currents, the results of the inversions supported by direct measurements. To avoid aliasing in the method, the time interval between the transects must be larger than the time scale for the flow to traverse the horizontal distance between adjacent vertical tracer profiles (order of hours), but smaller than the natural time scales of variability of the hydrodynamic processes active in the lake (order of days).
Reference: Anohin, V.V., Imberger, J., Ivey, G.N. and Romero, J., 2008, Estimating net transport and mixing using a time-dependent inverse method, 113, C07006, doi:10.1029/2006JC003705 |
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