I 12
Effects of Waves and Currents
a
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.
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,0' SUBTROPICAL HIGHo~HORSE LATS 30· .... RIABLE WINOS ANOCALMS
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EQUATORIAL LOW Oil DOLDRUMS
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A
HEAVY PRECI"ITATION
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O· VARIABLE WINOS AND CALMS
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Fig. 4.14 a-b . Gulf Stream. and wind-driven ocean circulation. a The Gulf Stream carries warm
surface waters toward the seas of NW Europe. It is part of the giant subtropical gyre of the North
Atlantic whose center is the Sargasso Sea. [Mainly after G. Neumann, W. J. Pierson, 1966, Principles of physical oceanography. Prentice-Hall, Englewood Cliffs]. b The global wind system,
schematically. [R. H. Fleming, 1957, Geol. Soc. Am . Mem. 67: 87J