We study dispersion effects in the rotating fluid system in the whole space
. We prove global strong convergence results for. Leray's solutions, as wel
l as global regularity and uniqueness of solutions as soon as the Rossby nu
mber is small enough; the method involves anisotropic Strichartz-type estim
ates. (C) 1999 Academie des sciences/Editions scientifiques et medicales El
sevier SAS.