348
B. Kjerfve eta!.
Fig. 3. Co tidal phase of the semi diurnal M 2 tide around South America, where the large
numbers refer to the number of lunar hours the local high tide lags the passage of the
moon across the Greenwich meridian (epoch). The small numbers along the coast are
the mean semidiurnal spring tidal ranges, 2x(M 2 +S 2 ), in em. (Modified from Dietrich et
a!. 1980
wave environments predominantly exist along the Pacific and Atlantic
shores of the southern cone of South America. Long-period swells from the
southwest, often with wave heights greater than 4 m and periods longer
than 10 s, occur along the entire west coast of South and Central America
(Davies 1980). The Pacific coast also experiences occasional, very destruc-
Précédent

- 363/376

Suivant