Method for Estimation of Ocean Current Velocity from Satellite Images

Barotropic instability waves on a shear interface propagate at the average speed of the water on the two sides. Assuming the instability to be excited by tidal oscillations, the phase speed is the wavelength divided by the tidal period. If the water is at rest on one side of the shear layer the curr...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1981-05, Vol.212 (4495), p.661-662
Hauptverfasser: Mollo-Christensen, Erik, Cornillon, Peter, Affonso Da S. Mascarenhas
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container_issue 4495
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container_title Science (American Association for the Advancement of Science)
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creator Mollo-Christensen, Erik
Cornillon, Peter
Affonso Da S. Mascarenhas
description Barotropic instability waves on a shear interface propagate at the average speed of the water on the two sides. Assuming the instability to be excited by tidal oscillations, the phase speed is the wavelength divided by the tidal period. If the water is at rest on one side of the shear layer the current speed on the other side can be calculated. This method, applied to the Gulf Stream beyond Cape Hatteras as seen in satellite images, gives estimates of current speed in general agreement with in situ observations.
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source American Association for the Advancement of Science; Jstor Complete Legacy
subjects 520100 - Environment, Aquatic- Basic Studies- (-1989)
Artificial satellites
Average speed
Calcite
CURRENTS
Dissolution
ENVIRONMENTAL SCIENCES
Estimation methods
GULF STREAM
Gulfs
MEASURING METHODS
NORTH AMERICA
NORTH CAROLINA
Ocean currents
Oceans
SATELLITES
Sea water
Shear layers
SOUTHEAST REGION
TIDE
USA
USES
VELOCITY
WATER CURRENTS
WATER WAVES
title Method for Estimation of Ocean Current Velocity from Satellite Images
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