Last glacial maximum to Holocene climate evolution controlled by sea-level change, Leeuwin Current, and Australian monsoon in the northwestern Australia

Author(s): Ishiwa, Takeshige; Yokoyama, Yusuke; McHugh, Cecilia M.; Reuning, Lars; Gallagher, Stephen J.
Author Affiliation(s): Primary:
National Institute of Polar Research, Tokyo, Japan
University of Tokyo, Japan
City University of New York Queens College, United States
Rheinisch-Westfälische Technische Hochschule Aachen, Germany
University of Melbourne, Australia
Volume Title: AGU 2017 fall meeting
Source: American Geophysical Union Fall Meeting, Vol.2017; American Geophysical Union 2017 fall meeting, New Orleans, LA, Dec. 11-15, 2017. Publisher: American Geophysical Union, Washington, DC, United States
Note: In English
Summary: The transition from cold to warm conditions during the last deglaciation influenced climate variability in the Indian Ocean and Pacific as a result of submerge of continental shelf and variations in the Indonesian Throughflow and Australian Monsoon. The shallow continental shelf (< 200 m water depth) developed along the northwestern Australian margin is influenced by the Australian Monsoon and Leeuwin Current (one of branch of the Indonesian Throughflow). The International Ocean Discovery Program Expedition 356 Indonesian Throughflow drilled in the northwestern Australian shallow continental shelf and recovered an interval from the Last Glacial Maximum to Holocene in Site U1461. Radiocarbon dating on macrofossils, foraminifera, and bulk organic matter provided a precise age-depth model, leading to high-resolved paleoclimate reconstruction. X-ray elemental analysis results are interpreted as an indicator of sedimentary environmental changes. The upper 20-m part of Site U1461 apparently records the climate transition from the LGM to Holocene in the northwestern Australia, which could be associated with sea-level change, Leeuwin Current activity, and the Australian Monsoon.
Year of Publication: 2017
Research Program: IODP Integrated Ocean Drilling Program
IODP2 International Ocean Discovery Program
Key Words: 03 Geochronology; 24 Surficial Geology, Quaternary Geology; Absolute age; Australasia; Australia; C-14; Carbon; Carnarvon Basin; Cenozoic; Climate change; Expedition 356; Holocene; IODP Site U1461; Indian Ocean; International Ocean Discovery Program; Isotopes; Last glacial maximum; Leeuwin Current; Marine environment; Monsoons; Paleoclimatology; Paleoenvironment; Quaternary; Radioactive isotopes; Shelf environment; Upper Holocene; Western Australia
Coordinates: S201251 S201251 E1150356 E1150356
Record ID: 2018093737
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