Consulta: subjectFacets:"Zonal jets"
Registros recuperados: 2
Data/hora: 01/06/2024 05:51:56

Bifurcation of the subtropical south equatorial current against New Caledonia in December 2004 from a hydrographic inverse box model
Provedor de dados: 5
Autores: Ganachaud, Alexandre; Gourdeau, Lionel; Kessler, William.
The South Equatorial Current (SEC), the westward branch of the South Pacific subtropical gyre, extends from the equator to 30 degrees S at depth. Linear ocean dynamics predict that the SEC forms boundary currents on the eastern coasts of the South Pacific islands it encounters. Those currents would then detach at the northern and southern tips of the islands, and cross the Coral Sea in the form of jets. The Fiji Islands, the Vanuatu archipelago, and New Caledonia are the major topographic obstacles on the SEC pathway to the Australian coast. Large-scale numerical studies, as well as climatologies, suggest the formation of three jets in their lee: the north Vanuatu jet (NVJ), the north Caledonian jet (NCJ), and the south Caledonian jet (SCJ), implying a...
Tipo: Text
Palavras-chave: Tropical Pacific ocean; Depth integrated flow; Zonal jets; Coral sea; Circulation; Waters; Variability; Generation; Island; Heat.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00207/31809/30221.pdf

Observations and mechanisms for the formation of deep equatorial and tropical circulation
Provedor de dados: 5
Autores: Menesguen, Claire; Delpech, Audrey; Marin, Frederic; Cravatte, Sophie; Schopp, Richard; Morel, Yves.
The Intermediate and Deep Equatorial and Tropical Circulations (DEC and DTC) consist of a complex system of zonal jets. This paper attempts at unifying existing observations and theories to present our current understanding of this jets system. Recent in‐situ observations suggesting a continuity between DEC and DTC are confronted against the various generation mechanisms that have been proposed in the literature. The key notion to differentiate these previous studies lies in the so‐called "cascade of mechanisms", i.e. the energy pathway and equilibration processes chain that lead to the jets from their initial energy source. Many studies see the Deep Equatorial Intra‐seasonal Variability (DEIV) as the initial energy source, highlighting its key role in...
Tipo: Text
Palavras-chave: Deep equatorial circulation; Deep tropical circulation; Zonal jets.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00482/59393/62159.pdf