Penhoat Yves du, Cane M.A. (1991). Effect of low latitude Western boundary gaps on the reflection of Equatorial motions. Journal of Geophysical Research, 96, p. 3307-3322. ISSN 0148-0227.
Titre du document
Effect of low latitude Western boundary gaps on the reflection of Equatorial motions
Année de publication
1991
Type de document
Article
Auteurs
Penhoat Yves du, Cane M.A.
Source
Journal of Geophysical Research, 1991,
96, p. 3307-3322 ISSN 0148-0227
The Western Tropical Pacific is thought to be an important zone for generating El Nino : reflections at the boundary make it a potential source region of Equatorial Kelvin waves. Calculations of the effect of a gappy Western boundary on the reflection process are carried out in the framework of the low frequency limit of the shallow water equations and are highly idealized. The method is also applied to a schematic version of the flow through the Indonesian seas from the Western Pacific to the Indian oceans. The results indicate somestrong sensitivities to the location of the gap and to the structure of the incoming flows. In addition, the results can be quite different, depending on whether the zonal extend of the gap is assumed to be infinite or finite. (More precisely, the latter means that the extend of the gap is short compared with the zonal wavelength of the relevant free waves at that frequency). In view of the complexity of the results for even such a simplified model, it will be very difficult to be confident of any modelling study of the Indonesian throughflow short of a highly resolved numerical calculation with a detailed representation of the geometry and bathymetry
Plan de classement
Théories et méthodes statistiques [020STAT01]
;
Dynamique des eaux [032DYNEAU]
Descripteurs
CIRCULATION OCEANIQUE ; EL NINO ; ONDE ROSSBY ; MODELE ; ANALYSE MATHEMATIQUE ; ONDE KELVIN ; ENSO
