The dense NADW originating in the North Atlantic sinks to depths exceeding 3000 m and flows southward (as seen in Figure 5B-5). In much of the Atlantic, NADW can be found at depths of about 1500 m to 3000 m or more. Figure 5B-6 from the NOAA World Ocean Atlas 2018 depicts annual mean temperatures at an ocean depth of 3000 m (9800 ft.). It shows the water with temperatures ranging between 2.25 and 2.75°C pooled at that depth in the Atlantic extending southward as far as about ______°S latitude.

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Chapter1: The Study Of Minerals
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The dense NADW originating in the North Atlantic sinks to depths exceeding 3000 m and flows southward (as seen in Figure 5B-5). In much of the Atlantic, NADW can be found at depths of about 1500 m to 3000 m or more. Figure 5B-6 from the NOAA World Ocean Atlas 2018 depicts annual mean temperatures at an ocean depth of 3000 m (9800 ft.). It shows the water with temperatures ranging between 2.25 and 2.75°C pooled at that depth in the Atlantic extending southward as far as about ______°S latitude.
a.10
b.30
c.60

Figure 5B-5 depicts a vertical cross section of the Atlantic Ocean along a north-
south line. It shows the general form of the layered structure of the Atlantic Ocean
(South and North). Arrows portray the density-driven circulation of water masses.
Almost all the water masses identified in this investigation originated in a few
relatively small regions of the ocean. The sinking of cold dense water at high
latitudes drives circulation. These water masses and deep currents also circulate
through the other major ocean basins. Again, note the initials are identified in
Figure 5B-3 under the diagram.
SFC
NACSW
AAIW
1 km
MIW
2 km
NADW
ААВW
3 km
4 km
Ocean Bottom
80S
60S
40S
20s
EQ
20N
40N
60N
80N
Figure 5B-5. Atlantic Ocean South-North vertical cross section.
Transcribed Image Text:Figure 5B-5 depicts a vertical cross section of the Atlantic Ocean along a north- south line. It shows the general form of the layered structure of the Atlantic Ocean (South and North). Arrows portray the density-driven circulation of water masses. Almost all the water masses identified in this investigation originated in a few relatively small regions of the ocean. The sinking of cold dense water at high latitudes drives circulation. These water masses and deep currents also circulate through the other major ocean basins. Again, note the initials are identified in Figure 5B-3 under the diagram. SFC NACSW AAIW 1 km MIW 2 km NADW ААВW 3 km 4 km Ocean Bottom 80S 60S 40S 20s EQ 20N 40N 60N 80N Figure 5B-5. Atlantic Ocean South-North vertical cross section.
World Ocean Atlas Climatology
Decadal average: 1955 - 2017
Contour Interval-0.25
60'E
120'E
180
120'W
60'W
90'N-
-90'N
60'N-
60'N
4
30'N-
30'N
30'S-
-30'S
60'S-
60'S
-0
60'E
120'E
180
120'W
60 W
Annual temperature [°C] at 3000 m. depth (one-degree grid)
Figure 5B-6. Mean annual temperature at a depth of 3000 m (9800 ft.). [World Ocean Atlas 2018,
Link 5B-4]
U
Transcribed Image Text:World Ocean Atlas Climatology Decadal average: 1955 - 2017 Contour Interval-0.25 60'E 120'E 180 120'W 60'W 90'N- -90'N 60'N- 60'N 4 30'N- 30'N 30'S- -30'S 60'S- 60'S -0 60'E 120'E 180 120'W 60 W Annual temperature [°C] at 3000 m. depth (one-degree grid) Figure 5B-6. Mean annual temperature at a depth of 3000 m (9800 ft.). [World Ocean Atlas 2018, Link 5B-4] U
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The dense NADW originating in the North Atlantic sinks to depths exceeding 3000 m and flows southward (as seen in Figure 5B-5). In much of the Atlantic, NADW can be found at depths of about 1500 m to 3000 m or more. Figure 5B-6 from the NOAA World Ocean Atlas 2018 depicts annual mean temperatures at an ocean depth of 3000 m (9800 ft.). It shows the water with temperatures ranging between 2.25 and 2.75°C pooled at that depth in the Atlantic extending southward as far as about ______°S latitude.

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