Orbital-scale changes in the Australian–Indonesian monsoon activity over the last two glacial periods
1 : Institut des sciences de la Terre de Paris
(UMR 7193)
Université Pierre et Marie Curie Paris 6
2 : Centre de recherche sur la paléobiodiversité et les paléoenvironnements
(UMR 7207)
Museum National d'Histoire Naturelle
3 : Institut des sciences de la Terre de Paris
(UMR 7193)
Université Pierre et Marie Curie Paris 6
4 : Laboratoire des sciences du climat et de l'environnement
(LSCE)
CEA, CNRS, UVSQ
LSCE-Vallée Bât. 12, avenue de la Terrasse, F-91198 GIF-SUR-YVETTE CEDEX -
France
A multi proxy study of core MD01-2376 collected in the Timor Sea has been used to study past changes in Indo-Australia monsoon dynamics, especially in relationships with Pacific Warm Pool evolution. This core covers the last two climatic cycles. Major elements have been measured by AVAATECH X-Ray Florescence core scanner. Heavy elements like Ti and Zr have been interpreted as aeolian tracers. They show a strong precession band and a good coherence with the june insolation at 30°N which might indicates changes in the Indo-Australia monsoon intensity. allow us to study past changes in monsoon activity at different time scale in relationships with orbitally-driven changes in past insolation. The aeolian tracer elements (K, Ti and Zr). On the other side, Br has been used as a marine productivity indicator and indicates a higher productivity during glacial than interglacial periods.
| Subject : | : | poster |
| Topics | : | Sessions générales |
| PDF version | : |  PDF version |
