TY - JOUR
T1 - Glacial Indonesian Throughflow weakening across the Mid-Pleistocene Climatic Transition
AU - Petrick, Benjamin
AU - Martínez-García, Alfredo
AU - Auer, Gerald
AU - Reuning, Lars
AU - Auderset, Alexandra
AU - Deik, Hanaa
AU - Takayanagi, Hideko
AU - De Vleeschouwer, David
AU - Iryu, Yasufumi
AU - Haug, Gerald H.
N1 - Funding Information:
This study was funded by the Max Planck Society. We would like to thank the technical staff of the Max Planck Institute for Chemistry (F. Rubach and B. Hinnenberg) for assistance during sample collection and analysis. This work utilized samples and data provided by the International Ocean Discovery Program (IODP). We thank the staff and crew of the D/V JOIDES Resolution for their work during IODP Expedition 356, and the shipboard science party for generating the shipboard data. All shipboard data are publicly available from www.iodp. tamu. edu. We would also like to thank Daniel Babin and one anonymous reviewer along with the editor Anna von der Heydt for their helpful comments. All data will be available on PANGEA upon publication.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The Indonesian Throughflow (ITF) controls the oceanic flux of heat and salt between the Pacific and Indian Oceans and therewith plays an important role in modulating the meridional overturning circulation and low latitude hydrological cycle. Here, we report new sea surface temperature and aridity records from the west coast of Australia (IODP Site U1460), which allow us to assess the sensitivity of the eastern Indian Ocean to the major reorganization of Earth’s climate that occurred during the Mid-Pleistocene Transition. Our records indicate glacial coolings at 1.55 and 0.65 million years ago that are best explained by a weakening of the ITF as a consequence of global sea level and tectonic changes. These coincide with the development of pronounced gradients in the carbon isotope composition of the different ocean basins and with substantial changes in regional aridity, suggesting that the restrictions of the ITF influenced both the evolution of global ocean circulation and the development of the modern hydrological cycle in Western Australia.
AB - The Indonesian Throughflow (ITF) controls the oceanic flux of heat and salt between the Pacific and Indian Oceans and therewith plays an important role in modulating the meridional overturning circulation and low latitude hydrological cycle. Here, we report new sea surface temperature and aridity records from the west coast of Australia (IODP Site U1460), which allow us to assess the sensitivity of the eastern Indian Ocean to the major reorganization of Earth’s climate that occurred during the Mid-Pleistocene Transition. Our records indicate glacial coolings at 1.55 and 0.65 million years ago that are best explained by a weakening of the ITF as a consequence of global sea level and tectonic changes. These coincide with the development of pronounced gradients in the carbon isotope composition of the different ocean basins and with substantial changes in regional aridity, suggesting that the restrictions of the ITF influenced both the evolution of global ocean circulation and the development of the modern hydrological cycle in Western Australia.
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U2 - 10.1038/s41598-019-53382-0
DO - 10.1038/s41598-019-53382-0
M3 - Article
C2 - 31740711
AN - SCOPUS:85075115623
SN - 2045-2322
VL - 9
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 16995
ER -
