6 A body of water can be thought of as a set of lay- ers. The top layer is driven forward by the wind, and each layer below is moved by friction. Each succeeding layer moves with a slower speed and at an angle to the layer immediately above it-to the right in the Northern Hemisphere, to the left in the Southern Hemisphere-until water motion becomes negligible. Wind force Wind Direction Surface water Friction of motion Net direction of Ekman transport 45° Wind force Direction of motion a The Ekman spiral model. © Though the direction of Figure 9.5 The Ekman spiral and the mechanism by which it operates. The length of the arrows in the diagrams is proportional to the speed of the current in each layer. movement varies for each layer in the stack, the theo- retical net flow of water in the Northern Hemisphere is 90° to the right of the prevailing wind force. Net flow Gujuseoj abebuego bujuJen a bebuan e
6 A body of water can be thought of as a set of lay- ers. The top layer is driven forward by the wind, and each layer below is moved by friction. Each succeeding layer moves with a slower speed and at an angle to the layer immediately above it-to the right in the Northern Hemisphere, to the left in the Southern Hemisphere-until water motion becomes negligible. Wind force Wind Direction Surface water Friction of motion Net direction of Ekman transport 45° Wind force Direction of motion a The Ekman spiral model. © Though the direction of Figure 9.5 The Ekman spiral and the mechanism by which it operates. The length of the arrows in the diagrams is proportional to the speed of the current in each layer. movement varies for each layer in the stack, the theo- retical net flow of water in the Northern Hemisphere is 90° to the right of the prevailing wind force. Net flow Gujuseoj abebuego bujuJen a bebuan e
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
Related questions
Question
Is there any depth at which water flows in exactly the opposite direction from the direction of the surface wind?
Transcribed Image Text:6 A body of water can be
thought of as a set of lay-
ers. The top layer is driven
forward by the wind, and
each layer below is moved
by friction. Each succeeding
layer moves with a slower
speed and at an angle
to the layer immediately
above it-to the right in
the Northern Hemisphere,
to the left in the Southern
Hemisphere-until water
motion becomes negligible.
Wind force
Wind
Direction
Surface water
Friction
of motion
Net
direction
of Ekman
transport
45°
Wind force
Direction
of motion
a The Ekman spiral model.
© Though the direction of
Figure 9.5 The Ekman spiral and the mechanism by which it operates.
The length of the arrows in the diagrams is proportional to the speed of
the current in each layer.
movement varies for each
layer in the stack, the theo-
retical net flow of water in
the Northern Hemisphere
is 90° to the right of the
prevailing wind force.
Net flow
Gujuseoj abebuego
bujuJen a bebuan e
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