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Brazil–Malvinas Confluence
The Brazil–Malvinas Confluence Zone (also called the Brazil–Falkland Confluence Zone or the Brazil–Falklands Confluence Zone) is a very energetic region of water just off the coast of Argentina and Uruguay where the warm poleward flowing Brazil Current and the cold equatorward flowing Malvinas Current converge. This region does oscillate latitudinally, however, in general this region of confluence occurs between 35 and 45 degrees south latitude and 50 to 70 degrees west longitude. The confluence of these two currents causes a strong thermohaline to exist and causes numerous high energy eddies to form.〔Maamaatuaiahutapu, K. et al.(1998)., Transports of the Brazil and Malvinas Currents at their Confluence. Journal of Marine Research Vol. 56 Issue 2, p417〕
== Brazil Current ==
(詳細はsubtropical water. The Brazil Current branches off northward from the South Equatorial Current at around 10 degrees South. As it flows poleward it branches off into two pieces at around 22 degrees South. One part flows eastward, and the other portion continues the poleward march flowing along the South American continental shelf. The poleward directed branch is the current that comes into convergence with the Malvinas Current. Typical temperature values for the Brazil Current are between 18 and 28 degrees Celsius, decreasing as it moves poleward. Typical salinities for the Brazil Current range between 35 and 36psu with some isolated spots as high as 37 psu. The current typically flows in the upper 600 meters of the ocean and its volume transport as it reaches the confluence zone is upwards of 20 Sverdrups with speeds over a half a meter per second.〔Peterson, R.G. and L. Stramma, 1990: Upper-level circulation in the South Atlantic Ocean. Progress in Oceanography, 26, 1-73.〕〔Evans, D.L, S.S. Signorini and L.B. Miranda, 1983: A note on the transport of the Brazil Current. Journal of Physical Oceanography, 13, 1732-1738.〕〔Memery, L., M. Arhan, X.A. Alvarez-Salgado, M-J. Messias, H. Mercier, C.G. Castro, A.F. Rios, 2000: The water masses along the western boundary of the south and equatorial Atlantic. Progress in Oceanography, 47, 69-98.〕
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