1. Department of Marine Geosciences Leon Charney School of Marine Sciences University of Haifa Mt. Carmel, Haifa 31905 Israel
2. Israel Oceanographic and Limnological Research P.O.B 8030 Haifa 31080 Israel
3. Oceanography Department Dalhousie University 1355 Oxford Street P.O.B 15000 Halifax Nova Scotia B3H 4R2 Canada