Age determination and age tie-points of sediment cores from the Timor Sea

DOI

The evolution of the Australian monsoon in relation to high-latitude temperature fluctuations over the last termination remains highly enigmatic. Here we integrate high-resolution riverine runoff and dust proxy data from X-ray fluorescence scanner measurements in four well-dated sediment cores, forming a NE-SW transect across the Timor Sea. Our records reveal that the development of the Australian monsoon closely followed the deglacial warming history of Antarctica. A minimum in riverine runoff documents dry conditions throughout the region during the Antarctic Cold Reversal (15-12.9 ka). Massive intensification of the monsoon coincided with Southern Hemisphere warming and intensified greenhouse forcing over Australia during the atmospheric CO2 rise at 12.9-10 ka. We relate the earlier onset of the monsoon in the Timor Strait (13.4 ka) to regional changes in landmass exposure during deglacial sea-level rise. A return to dryer conditions occurred between 8.1 and 7.3 ka following the early Holocene runoff maximum.

Supplement to: Kuhnt, Wolfgang; Holbourn, Ann E; Xu, Jian; Opdyke, Bradley N; De Deckker, Patrick; Röhl, Ursula; Mudelsee, Manfred (2015): Southern Hemisphere control on Australian monsoon variability during the late deglaciation and Holocene. Nature Communications, 6, 5916

Identifier
DOI https://doi.org/10.1594/PANGAEA.841351
Related Identifier https://doi.org/10.1038/ncomms6916
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.841351
Provenance
Creator Kuhnt, Wolfgang; Holbourn, Ann E ORCID logo; Xu, Jian ORCID logo; Opdyke, Bradley N ORCID logo; De Deckker, Patrick ORCID logo; Röhl, Ursula ORCID logo; Mudelsee, Manfred ORCID logo
Publisher PANGAEA
Publication Year 2015
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 5 datasets
Discipline Geosciences; Natural Sciences
Spatial Coverage (119.501W, -15.311S, 128.641E, -8.790N)
Temporal Coverage Begin 2001-05-03T21:05:00Z
Temporal Coverage End 2005-10-01T04:42:00Z