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2002 LAPCOD Meeting
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Surface Transport and Mixing in Monterey Bay: A First Look from Synoptic HF Radar Measurements
B. L. Lipphardt, Jr., A. D. Kirwan, Jr., C. E. Grosch, J. D. Paduan, D. Small, S. Wiggins, K. Ide
University of Delaware
brucel@udel.edu(Abstract received 09/27/2002 for session B)
ABSTRACT
Nearly continuous hourly HF radar observed surface currents in Monterey Bay, California are available for the period June 1999 through January 2000. We objectively map these measurements using a technique called normal mode analysis to fill spatial and temporal gaps, and to filter them in both space and time. The observations are projected onto two subsets of basis functions: vorticity modes and divergence modes. The mapped surface velocity field is used to evolve clusters of simulated drifters in the bay. Examples of drifter cluster evolution are presented to demonstrate the complexity of transport and mixing patterns suggested by the observations and to provide rough estimates of residence time scales inside the bay. The complex character of these simulated trajectories has motivated us to study hourly residence time maps in the bay created from large populations of simulated trajectories. These simulations are quite computationally intensive.
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2002 LAPCOD Meeting, Key Largo, Florida, December 12-16, 2000