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Ba distribution in surface Southern Ocean sediments and export production estimates
Provedor de dados: 5
Autores: Fagel, N; Dehairs, F; Andre, L; Bareille, G; Monnin, C.
We present excess Ba (Baxs) data (i.e., total Ba corrected for lithogenic Ba) for surface sediments from a north-south transect between the Polar Front Zone and the northern Weddell Gyre in the Atlantic sector and between the Polar Front Zone and the Antarctic continent in the Indian sector. Focus is on two different processes that affect excess Ba accumulation in the sediments: sediment redistribution and excess Ba dissolution. The effect of these processes needs to be corrected for in order to convert accumulation rate into vertical rain rate, the flux component that can be linked to export production. In the Southern Ocean a major process affecting Ba accumulation rate is sediment focusing, which is corrected for using excess (230)Th. This correction,...
Tipo: Text
Palavras-chave: Excess Ba; Sediment; Southern Ocean; Export production.
Ano: 2002
URL: https://archimer.ifremer.fr/doc/00223/33392/31868.pdf