Paleoclimate investiations on sediment core MD01-2378

We present a high-resolution (not, vert, similar 60-110 yr) multi-proxy record spanning Marine Isotope Stage 3 from IMAGES Core MD01-2378 (13°04.95'S and 121°47.27'E, 1783 m water depth), located in the Timor Sea, off NW Australia. Today, this area is influenced by the Intertropical Convergence Zone, which drives monsoonal winds during austral summer and by the main outflow of the Indonesian Throughflow, which represents a key component of the global thermohaline circulation system. Thus, this core is ideally situated to monitor the linkages between tropical and high latitude climate variability. Benthic d18O data (Planulina wuellerstorfi) clearly reflect Antarctic warm events (A1-A4) as recorded by the EPICA Byrd and Dronning Maud Land ice cores. This southern high latitude signal is transferred by deep and intermediate water masses flowing northward from the Southern Ocean into the Indian Ocean. Planktonic d18O shows closer affinity to northern high latitudes planktonic and ice core records, although only the longer-lasting Dansgaard-Oeschger warm events, 8, 12, 14, and 16-17 are clearly expressed in our record. This northern high latitude signal in the surface water is probably transmitted through atmospheric teleconnections and coupling of the Asian-Australian monsoon systems. Benthic foraminiferal census counts suggest a coupling of Antarctic cooling with carbon flux patterns in the Timor Sea. We relate increasing abundances of carbon-flux sensitive species at 38-45 ka to the northeastward migration of the West Australian Current frontal area. This water mass reorganization is also supported by concurrent decreases in Mg/Ca and planktonic d18O values (Globigerinoides ruber white).

Data and Resources

This dataset has no data

Cite this as

Dürkop, Anke, Holbourn, Ann E, Kuhnt, Wolfgang, Zuraida, Rina, Andersen, Nils, Grootes, Pieter Meiert (2009). Dataset: Paleoclimate investiations on sediment core MD01-2378. https://doi.org/10.1594/PANGAEA.728474

DOI retrieved: 2009

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.728474
Author Dürkop, Anke
Given Name Anke
Family Name Dürkop
More Authors
Holbourn, Ann E
Kuhnt, Wolfgang
Zuraida, Rina
Andersen, Nils
Grootes, Pieter Meiert
Source Creation 2009
Publication Year 2009
Resource Type application/zip - filename: duerkop_2008
Subject Areas
Name: Paleontology

Related Identifiers
Title: Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3
Identifier: https://doi.org/10.1016/j.marmicro.2007.10.002
Type: DOI
Relation: IsSupplementTo
Year: 2008
Source: Marine Micropaleontology
Authors: Dürkop Anke , Holbourn Ann E , Kuhnt Wolfgang , Zuraida Rina , Andersen Nils , Grootes Pieter Meiert .