
A primary cause of water motion is wind energy, which transfers to the water as it blows across its surface. This results in two primary types of water motion: currents and waves, both of which can result from forces other than wind as well."
K. Shreeves, L. Alexander, R. Yakzan, J. Kinsella, A. Brylske, J. Lewis:
The Encyclopedia of Recreational Diving
PADI, Rancho Santa Margarita - 2005
pag. 2-27
catalogazione: libreria accanto al computer