Consulta: creatorFacets:"Cabioch, G."
Registros recuperados: 3
Data/hora: 27/07/2024 03:06:25

Inter-hemispheric asymmetry in the early Pleistocene Pacific warm pool
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Russon, T.; Elliot, M.; Sadekov, A.; Cabioch, G.; Correge, T.; De Deckker, P.
The position of the southern boundary of the Pacific warm pool is shown to have been stable since the early Pleistocene, based upon a planktic foraminiferal Mg/Ca-derived reconstruction of subtropical sea surface temperature in the Coral Sea. This contrasts with previous reconstructions showing warm pool contraction from the north and east and means that the early Pleistocene warm pool was more hemispherically asymmetric than its present configuration. The latter was not established until similar to 1Ma, supporting a strengthening of the northern Hadley Cell, which was not replicated in its southern counterpart, prior to the Mid-Pleistocene Transition.
Tipo: Text
Palavras-chave: Pacific warm pool; Mg/Ca paleothermometry; Mid-Pleistocene Transition.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00144/25527/23672.pdf

Middle-late Pleistocene deep water circulation in the southwest subtropical Pacific
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Russon, T.; Elliot, M.; Kissel, C.; Cabioch, G.; De Deckker, P.; Correge, T.
The modern delta(13)C(DIC) distribution in southwest subtropical Pacific deep waters is consistent with a regional mixing regime between water masses of open Pacific Ocean and Tasman Sea origin. This mixing regime is reconstructed across the middle-late Pleistocene using a record of benthic foraminiferal delta(13)C in a sediment core from the New Caledonia Trough. The relative influence on the mixing regime from open Pacific Ocean deep waters is seen to be significantly reduced during glacial in comparison to interglacial stages over the past 1.1 Ma. The spatial delta(13)C gradient in the Southern Ocean between deep waters entering the Tasman Sea and the open Pacific Ocean is shown to be consequently greater during glacial than interglacial stages but was...
Tipo: Text
Ano: 2009
URL: https://archimer.ifremer.fr/doc/00144/25522/23666.pdf

The mid-Pleistocene transition in the subtropical southwest Pacific
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Russon, T.; Elliot, M.; Sadekov, A.; Cabioch, G.; Correge, T.; De Deckker, P.
Reconstructions of subtropical southwest Pacific climate variability over the Pleistocene were derived from coupled planktic foraminiferal δ18O-Mg/Ca measurements taken from a southern Coral Sea sediment core. A clear shift from ∼40 kyr to ∼100 kyr modes of reconstructed glacial-interglacial sea surface temperature (SST) variability is seen over the mid-Pleistocene transition, and these fluctuations are shown to have remained coherent with the orbital obliquity cycle across the transition. The likely origin of this strong obliquity signal in subtropical southwest Pacific SST is shown to be the southern high latitudes, and comparison with existing SST reconstructions from the equatorial Pacific is consistent with the communication of the signal occurring...
Tipo: Text
Ano: 2011
URL: https://archimer.ifremer.fr/doc/00141/25187/23293.pdf