CHAPTER 8 . Quality Status, Appropriate Monitoring and Legislation of the North Sea
147
Fig. 8.1 a. Map of the North Sea indicating residual currents. The width of arrows indicates the magnitude of volume transport (From Quality Status Report for the North Sea (1993), after Turrell et al. 1992)
On average the water in the North Sea is exchanged with the North Atlantic every
1-2 years, but the renewal time varies between 0.5 and 3 years for different areas. For
example, a renewal time of less than 6 months is e,xpected for Norwegian coastal wa-
147
Fig. 8.1 a. Map of the North Sea indicating residual currents. The width of arrows indicates the magnitude of volume transport (From Quality Status Report for the North Sea (1993), after Turrell et al. 1992)
On average the water in the North Sea is exchanged with the North Atlantic every
1-2 years, but the renewal time varies between 0.5 and 3 years for different areas. For
example, a renewal time of less than 6 months is e,xpected for Norwegian coastal wa-