from the abstract, "In this report we reanalyse the Great Lakes Drogue Studies data taken in 1964. Original drogue position data are edited into smoothed position data for this purpose. The edited data are then processed using linear regression procedures to calculate not only Lagrangian deformations but also velocity gradient parameters, i.e. divergence, vorticity, deformation rates. The linear regression method also enables evaluation of turbulent characteristics, in particular momentary eddy diffusivities. . ."
84 p. : ill. ; 28 cm. Bibliography. " Sponsored by Great Lakes Environmental Research Laboratory, NOAA, Ann Arbor, Mich., contract 03-5-022-65."