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North Atlantic 60°N Current North America Hill's center Europe Gulf offset to west Canary Current Stream E Coriolis effect. 15°N Equator Ekman transport forms dome Pressure gradient Which sinks ...com- pressing the layers beneath .. forcing those layers to spread Pycnocline Thermocline is pushed deeper The surface of the North Atlantic is raised through wind motion and Ekman transport to form a low hill. Water from point 2 (see also Figures 9.4 and 9.6) turns westward and flows along the side of this hill. The westward-moving water is balanced between the Coriolis effect (which would turn the water to the right) and flows down the pressure gradient, driven by gravity (which would turn it to the left). Thus, water in a gyre moves along the outside edge of an ocean basin. 6 The hill is formed by Ekman transport. Water turns clockwise (inward) to form the dome, then descends, depressing the thermocline. Center of hill The average height of the surface of the North Atlantic is shown in color in this image derived from data taken in 1992 by the TOPEX/Poseidon satellite. Red indicates the highest surface; green and blue, the lowest. Note that the measured position of the hill is offset to the west, as seen in a. (The westward offset is explained in Figure 9.13.) The gradually sloping hill is only 2 meters (6.5 feet) high and would not be apparent to any- one traveling across the ocean. Figure 9.7 The hill of water in the North Atlantic. Cengage Learning NASAUPL BujuJee ebetueg e

North Atlantic 60°N Current North America Hill's center Europe Gulf offset to west Canary Current Stream E Coriolis effect. 15°N Equator Ekman transport forms dome Pressure gradient Which sinks ...com- pressing the layers beneath .. forcing those layers to spread Pycnocline Thermocline is pushed deeper The surface of the North Atlantic is raised through wind motion and Ekman transport to form a low hill. Water from point 2 (see also Figures 9.4 and 9.6) turns westward and flows along the side of this hill. The westward-moving water is balanced between the Coriolis effect (which would turn the water to the right) and flows down the pressure gradient, driven by gravity (which would turn it to the left). Thus, water in a gyre moves along the outside edge of an ocean basin. 6 The hill is formed by Ekman transport. Water turns clockwise (inward) to form the dome, then descends, depressing the thermocline. Center of hill The average height of the surface of the North Atlantic is shown in color in this image derived from data taken in 1992 by the TOPEX/Poseidon satellite. Red indicates the highest surface; green and blue, the lowest. Note that the measured position of the hill is offset to the west, as seen in a. (The westward offset is explained in Figure 9.13.) The gradually sloping hill is only 2 meters (6.5 feet) high and would not be apparent to any- one traveling across the ocean. Figure 9.7 The hill of water in the North Atlantic. Cengage Learning NASAUPL BujuJee ebetueg e

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
Section: Chapter Questions
Problem 1LR
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Without looking ahead, can you think why the peak of the hill is offset to the west? Would it also be offset to the west in the south Atlantic?

North Atlantic 60°N Current North America Hill's center Europe Gulf offset to west Canary Current Stream E Coriolis effect. 15°N Equator Ekman transport forms dome Pressure gradient Which sinks ...com- pressing the layers beneath .. forcing those layers to spread Pycnocline Thermocline is pushed deeper The surface of the North Atlantic is raised through wind motion and Ekman transport to form a low hill. Water from point 2 (see also Figures 9.4 and 9.6) turns westward and flows along the side of this hill. The westward-moving water is balanced between the Coriolis effect (which would turn the water to the right) and flows down the pressure gradient, driven by gravity (which would turn it to the left). Thus, water in a gyre moves along the outside edge of an ocean basin. 6 The hill is formed by Ekman transport. Water turns clockwise (inward) to form the dome, then descends, depressing the thermocline. Center of hill The average height of the surface of the North Atlantic is shown in color in this image derived from data taken in 1992 by the TOPEX/Poseidon satellite. Red indicates the highest surface; green and blue, the lowest. Note that the measured position of the hill is offset to the west, as seen in a. (The westward offset is explained in Figure 9.13.) The gradually sloping hill is only 2 meters (6.5 feet) high and would not be apparent to any- one traveling across the ocean. Figure 9.7 The hill of water in the North Atlantic. Cengage Learning NASAUPL BujuJee ebetueg e
Transcribed Image Text:North Atlantic 60°N Current North America Hill's center Europe Gulf offset to west Canary Current Stream E Coriolis effect. 15°N Equator Ekman transport forms dome Pressure gradient Which sinks ...com- pressing the layers beneath .. forcing those layers to spread Pycnocline Thermocline is pushed deeper The surface of the North Atlantic is raised through wind motion and Ekman transport to form a low hill. Water from point 2 (see also Figures 9.4 and 9.6) turns westward and flows along the side of this hill. The westward-moving water is balanced between the Coriolis effect (which would turn the water to the right) and flows down the pressure gradient, driven by gravity (which would turn it to the left). Thus, water in a gyre moves along the outside edge of an ocean basin. 6 The hill is formed by Ekman transport. Water turns clockwise (inward) to form the dome, then descends, depressing the thermocline. Center of hill The average height of the surface of the North Atlantic is shown in color in this image derived from data taken in 1992 by the TOPEX/Poseidon satellite. Red indicates the highest surface; green and blue, the lowest. Note that the measured position of the hill is offset to the west, as seen in a. (The westward offset is explained in Figure 9.13.) The gradually sloping hill is only 2 meters (6.5 feet) high and would not be apparent to any- one traveling across the ocean. Figure 9.7 The hill of water in the North Atlantic. Cengage Learning NASAUPL BujuJee ebetueg e
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