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Oceanography

WCHS Oceanography Chapter 16

WordDefinition
Ocean current mass of ocean water that flows from one place to another
surface current movement of water that flows horizontally in the upper part of the ocean's surface.
gyre the large circular surface current pattern found in each ocean.
Coriolis effect The apparent deflective force of Earth's rotation on all free-moving objects, including the atmosphere and oceans'; defection is to the right in the Northern Hemisphere, and to the left in the Sourhtern Hemisphere.
upwelling the rising of cold water from deeper layers to replace warmer surface water that has been moved away
density current Current of ocean water that results from density differences among water masses
wavelength the horizontal distance seperating successive crests or troughs
wave height the vertical didstance between the trough and crest of a wave
wave period the time interval between the passage of successive crests at a stationary point.
fetch the distance that the wind has traveled across open water.
tide daily change in the elevation of the ocean surface.
tidal range the difference in height between successive high and low tides.
spring tide highest tidal range that occurs due to the alignment of Earth, the moon, and the sun.
neap tide the lowest tidal range, occurring near the times of the first-quarter and third-quarter phases of the moon.
beach the accumulation of sediment found along the shore of a lake or an ocean.
wave refraction the process by which the portion of a wave in shallow water slows, causing the wave to bend and tend to align itself with the underwater contours.
longshore current a near-shore current that flows parallel t the shore.
barrier islands a low, elongated ridge of sand that parallels the coast.
Created by: dmoudy
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