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Marzin, C.; Kallel, Nejib; Kageyama, Masa; Duplessy, Jean-claude; Braconnot, Jean-claude. |
Several paleoclimate records such as from Chinese loess, speleothems or upwelling indicators in marine sediments present large variations of the Asian monsoon system during the last glaciation. Here, we present a new record from the northern Andaman Sea (core MD77-176) which shows the variations of the hydrological cycle of the Bay of Bengal. The high-resolution record of surface water delta O-18 dominantly reflects salinity changes and displays large millennial-scale oscillations over the period 40 000 to 11 000 yr BP. Their timing and sequence suggests that events of high (resp. low) salinity in the Bay of Bengal, i.e. weak (resp. strong) Indian monsoon, correspond to cold (resp. warm) events in the North Atlantic and Arctic, as documented by the... |
Tipo: Text |
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Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00264/37572/36845.pdf |
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Braconnot, Jean-claude; Casanova, Jean-paul. |
Examining the planktonic material collected by the oceanographic vessel of the Institute of Marine Fisheries the "Président Théodore-Tissier", in autumn 1958, in the western Mediterranean area located north of the 42nd parallel, some samples proved to be very interesting in the study of individuals budded by Doliolum nationalis phorozoids, recently characterised by a member of our team. This pelagic tunicate abounds in the area, and contrary to what is usually observed in the Mediterranean Sea or the Atlantic Ocean, for this species, embodied only by phorozoids, two stages-a phorozoid stage and a (apparently) gonozoid stage-meet together. But these gonozoids are aberrant: they have both well-shaped gonads and a ventral peduncle with buds, a typical... |
Tipo: Text |
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Ano: 1967 |
URL: http://archimer.ifremer.fr/doc/1967/publication-3871.pdf |
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