Generation of cyclonic eddies by the Agulhas Current in the lee of the Agulhas Bank

Citation
P. Penven et al., Generation of cyclonic eddies by the Agulhas Current in the lee of the Agulhas Bank, GEOPHYS R L, 28(6), 2001, pp. 1055-1058
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Earth Sciences
Journal title
GEOPHYSICAL RESEARCH LETTERS
ISSN journal
0094-8276 → ACNP
Volume
28
Issue
6
Year of publication
2001
Pages
1055 - 1058
Database
ISI
SICI code
0094-8276(20010315)28:6<1055:GOCEBT>2.0.ZU;2-1
Abstract
Anti-cyclonic rings are shed from the Agulhas Current at its retroflection. They subsequently drift off into the South Atlantic. Smaller, cyclonic edd ies have also been observed in this region. The origin of these latter eddi es has remained unknown. We present model results that indicate that the co nfiguration of the southern Agulhas Current and the poleward termination of the continental shelf of Africa allows shedding of cyclonic lee eddies by a flow detachment process. Hydrographic data, thermal infrared satellite im ages and altimetric observations are furnished that show that this model si mulation is consistent with the characteristics and the behaviour of cyclon ic eddies in the region.