quinta-feira, 28 de abril de 2016

Blowing across the SEA - My favorites quotes from the famous Bowditch


Leia uma explicação para esta série de 30 posts clicando aqui.


Oceano Atlântico - 2013 - foto de Fernando Costa


"The stress of wind blowing across the SEA causes a
surface layer of water to move. Due to the low viscosity of
water, this stress is not directly communicated to the ocean
interior, but is balanced by the Coriolis force within a
relatively thin surface layer, 10-200m thick. This layer is
called the Ekman layer and the motion of this layer is
called the Ekman transport. Because of the deflection by
the Coriolis force, the Ekman transport is not in the
direction of the wind, but is 90° to the right in the Northern
Hemisphere and 90° toward the left in the Southern
Hemisphere. The amount of water flowing in this layer
depends only upon the wind and the Coriolis force and is
independent of the depth of the Ekman layer and the
viscosity of the water."

CHAPTER 31 OCEAN CURRENTS

BOWDITCH

THE AMERICAN PRACTICAL NAVIGATOR





Leia uma explicação para esta série de 30 posts clicando aqui.

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