Physics
Scientific paper
Aug 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.2243w&link_type=abstract
Geophysical Research Letters, Volume 26, Issue 15, p. 2243-2246
Physics
1
Oceanography: Physical: Eddies And Mesoscale Processes, Oceanography: Physical: Fronts And Jets, Oceanography: Physical: Sea Level Variations, Oceanography: Physical: Upper Ocean Processes
Scientific paper
Analysis of the first 5 years of TOPEX/Poseidon altimetry data reveals that mesoscale variability (MV) in the Kuroshio Extension region has a large, well structured temporal change. The mesoscale variance varies by more than a factor of 2 over the 5-year span. The temporal variation appears to be the combination of two forms: a large-scale standing (from 140°E to 170°E) modulation, and accompanying with it a variation that propagates westward slowly with a phase speed of about 0.7 cm/s. Along with the westward propagation, the center of maximum MV retreats westward. As a comparison, variation of MV in the Gulf Stream region is computed. The analysis shows that MV in the Gulf Stream region also undergoes large temporal change. But it is much less well structured.
Koblinsky Chester
Wang Liping
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