This project was funded initially under Employment and Immigration Canada's Job Development Program, jointly administered by E.I.C. and the Department of Fisheries and Oceans. The contribution of Atmospheric Dynamics Corporation, Victoria, B.C., which sponsored the project on behalf of the Business and Industrial Commission of Victoria, is gratefully acknowledged. Special thanks are due to Dr.G.L.Greer, Job Development Coordinator at the Institute of Ocean Sciences, Sidney,B.C., without whose diligent efforts the project would not have proceeded, and to Dr.A.D.Booth for constructive criticism and encouragement over a long period. Other funding has been through support by the National Research Program of United States Geological Survey.