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SURFACE SALINITIES 37 36 35 34 33 32 31 60°N 50° 40° 30° 20° 10 0° 10° 20 30 40° 50° 60°S Latitude A Figure 8 Graph for plotting surface salinities. h latitudes in the Atlantic Ocean have the highest surface salinities? are two factors that control the salinity of seawater? and s the salinity of the surface waters of the equatorial and subtropical regions (about 30° latitude) in n different? Surface Salinity (C)

SURFACE SALINITIES 37 36 35 34 33 32 31 60°N 50° 40° 30° 20° 10 0° 10° 20 30 40° 50° 60°S Latitude A Figure 8 Graph for plotting surface salinities. h latitudes in the Atlantic Ocean have the highest surface salinities? are two factors that control the salinity of seawater? and s the salinity of the surface waters of the equatorial and subtropical regions (about 30° latitude) in n different? Surface Salinity (C)

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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Introduction to Oceanography SURFACE SALINITIES 37 36 35 34 33 32 31 60°N 50 40° 30° 20° 10° 0° 10° 20° 30° 40° 50° 60°S Latitude A Figure 8 Graph for plotting surface salinities. 2. Which latitudes in the Atlantic Ocean have the highest surface salinities? 3. What are two factors that control the salinity of seawater? and 4. Why is the salinity of the surface waters of the equatorial and subtropical regions (about 30° latitude) in the Atlantic Ocean different? 5. Does the Atlantic Ocean or Pacific Ocean have a higher average surface salinity? Use Figure 9, which shows how ocean water salinity varies with depth at different latitudes, to complete the following. 6. In general, does salinity increase or decrease with depth in equatorial regions? Does salinity increase or decrease with depth in polar regions? Changes in Ocean Water Salinity with Depth in the Summer Salinity rial regions. with depth in equato- Salinity Low High Salinity regions. with depth in polar Surface mixed zone 7. In the subtropics, why are the surface salinities much higher than the deep-water salinities? Transition zone Polar latitudes Equator 8. The halocline (halo = salt, cline = slope) is a layer of ocean water where there is a rapid change in salin- ity with depth. Label the halocline on Figure 9. Subtropics 9. Does the salinity of ocean water below the halo- cline increase rapidly, remain fairly constant, or decrease rapidly? Deep The salinity of ocean water below the halocline. zone 10. In winter, sea ice forms in the polar latitudes. The water in this ice is essentially salt-free freshwater. How does the formation of sea ice influence sur- face salinity in polar regions? Show this change by sketching a line on Figure 9. A Figure 9 Changes in ocean water salinity with depth for equatorial, subtropical, and polar latitudes. Surface Salinity (%.) Depth
Transcribed Image Text:Introduction to Oceanography SURFACE SALINITIES 37 36 35 34 33 32 31 60°N 50 40° 30° 20° 10° 0° 10° 20° 30° 40° 50° 60°S Latitude A Figure 8 Graph for plotting surface salinities. 2. Which latitudes in the Atlantic Ocean have the highest surface salinities? 3. What are two factors that control the salinity of seawater? and 4. Why is the salinity of the surface waters of the equatorial and subtropical regions (about 30° latitude) in the Atlantic Ocean different? 5. Does the Atlantic Ocean or Pacific Ocean have a higher average surface salinity? Use Figure 9, which shows how ocean water salinity varies with depth at different latitudes, to complete the following. 6. In general, does salinity increase or decrease with depth in equatorial regions? Does salinity increase or decrease with depth in polar regions? Changes in Ocean Water Salinity with Depth in the Summer Salinity rial regions. with depth in equato- Salinity Low High Salinity regions. with depth in polar Surface mixed zone 7. In the subtropics, why are the surface salinities much higher than the deep-water salinities? Transition zone Polar latitudes Equator 8. The halocline (halo = salt, cline = slope) is a layer of ocean water where there is a rapid change in salin- ity with depth. Label the halocline on Figure 9. Subtropics 9. Does the salinity of ocean water below the halo- cline increase rapidly, remain fairly constant, or decrease rapidly? Deep The salinity of ocean water below the halocline. zone 10. In winter, sea ice forms in the polar latitudes. The water in this ice is essentially salt-free freshwater. How does the formation of sea ice influence sur- face salinity in polar regions? Show this change by sketching a line on Figure 9. A Figure 9 Changes in ocean water salinity with depth for equatorial, subtropical, and polar latitudes. Surface Salinity (%.) Depth
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