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Figure 5.2. Carta Marina by Olaus Magnus 1539

Figure 5.3. The drainage basin of the Baltic Sea

Figure 5.4. The functional zones of the Baltic Sea

Figure 5.5. The seasonal variation in drainage to the Baltic Sea

Figure 5.7. Water exchange in the Baltic Sea

Figure 5.8. Bathymetric map of the Baltic Sea

Figure 5.9. Surface water currents in the Baltic Sea.

Figure 5.10. Salinity distribution in the Baltic Sea

Figure 5.11. Vertical profiles for temperature (broken line), salinity and oxygen (solid lines) in the Gotland deep in 1987

Figure 5.12a. Variation in temperature (°C) at the Gotland deep during the period 1963 - 1997

Figure 5.12b. Variation in salinity (parts per thousand) at the Gotland deep during the period 1963 - 1997.

Figure 5.12c. Variation in oxygen (mg/ml) at the Gotland deep during the period 1963 - 1997.

Figure 5.13. Major saltwater inflows during the 20th century

Figure 5.14a. Vertical distribution of salinity (parts per thousand) in the Bothnian Bay, Bothnian Sea and Baltic proper

Figure 5.14b. Vertical distribution of temperature (°C ) in the Bothnian Bay, Bothnian Sea and Baltic proper

Figure 5.15. Small-scale variability of oceanographic parameters exemplified by the water temperature dynamics

Figure 5.16a. Distribution of ice in the Baltic Sea

Figure 5.16b. Maximum extension of ice in winter 2000/01

Figure 5.17. Summary of the complex interaction between the physical, chemical, and biological parameters that characterize an aquatic ecosystem

Figure 5.19. Coastal types

Figure 5.28. Use of morphometric data to calculate coastal water exchange and bottom dynamic conditions

Figure 5.30. Formation and function of different bottom types

Figure5.31. The ETA diagram

Figure 5.32a. Areas with low oxygen concentrations 1993

Figure 5.32b. Areas with low oxygen concentrations 1999

Figure 5.33. Declining oxygen concentrations