Advances in
G E O P H Y S I C S
Edited by
H. E. LANDSBERG
lnrtftute for FluM Dynamics and Eqplrcd Mathematics
University of Maryland, Cdlegt Park, Maryland
J. V A N MIEGHEM
Royal Belgian Meteorological Institute
Uccle, &Ilium
Editorkd Advisory Committee
BERNARD HAURWITZ
R. STONELEY
ROGER REVELLE
URHO A. UOTllA