In spite of increasing computational resources, rivers, lakes, and ocean circulation models cannot resolve all relevant scales of motion. Hence, parameterizations for subgrid scales will continue to be necessary. In particular, the kinetics of chemical and biological reactions may be best described at the smallest scales, comparable with diffusional length-scales. Understanding of small-scale turbulence is important for explaining or predicting the kinetics of chemical and biological reactions in natural systems when these are limited by transport processes. This research is concerned with the study of small-scale turbulence in the aquatic environments, with specific interest in potential interactions between biological productivity and the turbulent flow field.
An IBM Intellistation workstation, received through the Supercomputing Institute and IBM's Shared University Research Award Program, is being used as a data server and image/sonic processor. Incorporated into the existing LAN and St. Anthony Falls Laboratory, it is accessible from a wide array of experimental and academic workstations. Current research efforts involving intensive graphic and numeric analysis include the measurement of two- and three-dimensional fluid velocity fields using particle image velocimetry and the spectral analysis of microstructure field data. Further work is acquiring, processing, and analyzing color algal images acquired with a microscope. This work is also dealing with water quality analysis.
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