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OCN 201 Seventh Quiz Questions

Wind and Ocean Circulation II

Pinet - Chapter 6

6-3 Deep-Ocean Circulation (p. 211)

1. Explain why density-driven subsurface currents are called thermohaline circulation.

2. Give the percentages of the ocean affected by density-driven thermohaline circulation and wind-driven surface circulation.

Water Masses and Density-Driven Water Flow

3. Explain why temperature and salinity can be used to trace subsurface water masses. (Also see table 6-2)

4. Contrast the temperatures and the salinities of the three groups of water masses listed in table 6-2.

5. Give the range of temperatures and salinities for 75% of the ocean's volume. (Also see fig. 6-13)

A General Model of Thermohaline Circulation

6. Give the latitudinal extent of the warm surface (central waters). (Also see table 6-2 and figs. 6-14 and 6-15)

Atlantic Ocean

7. Describe the formation of the densest water in the ocean, the AABW. (Also see figs. 6-15 and 6-16)

8. Give the direction of flow for the AABW. (Also see figs. 6-15 and 6-16)

9. Describe the formation of the most common water in the Atlantic Ocean, the NADW. (Also see figs. 6-15 and 6-16)

10. Give the direction of flow for the NADW. (Also see figs. 6-15 and 6-16)

11. List the two intermediate water masses in the Atlantic Ocean, the AAIW and MIW, and give their directions of flow. (Also see figs. 6-15 and 6-16)

12. Describe the formation of the MIW. (Also see figs. 6-15, 6-16, and 6-18, and Section 6-4 on p. 220)

13. Use the isohalines and isotherms to find the MIW in fig. 6-14.

Pacific Ocean

14. Give the primary type of water in the Pacific Ocean. (Also see fig. 6-15)

15. Describe the formation of Common Water (CoW). (Also see table 6-2 and figs. 6-15 and 6-16b)

16. Give the directions of flow for the AAIW and the NPIW in the Pacific Ocean.(Also see figs. 6-15 and 6-16)

Indian Ocean

17. Give the primary type of water in the Indian Ocean. (Also see fig. 6-15)

18. Other than the AAIW give the name of the other thermohaline water body in the Indian Ocean.(Also see fig. 6-15)

19. Use the model of the MIW to explain the formation of the RSIW. (Also see fig. 6-18)

20. Describe the global pattern of ocean circulation depicted in fig. 6-16b.

21. Explain the role of the global circulation in the marine ecosystem.