Sea level record obtained from submerged the Great Barrier Reef coral reefs

Author(s): Yokoyama, Y.; Esat, Tezer M.; Thompson, W. G.; Thomas, Alex L.; Webster, Jody; Miyairi, Y.; Matsuzaki, H.; Okuno, J.; Fallon, Stewart; Braga, J.; Humblet, Marc; Iryu, Y.; Potts, D. C.
Author Affiliation(s): Primary:
University of Tokyo, Chiba, Japan
Other:
Australian Nuclear Science and Technology Organization, Australia
Woods Hole Oceanographic Institution, United States
University of Edinburgh, United Kingdom
University of Sydney, Australia
Japan Agency for Marine-Earth Science and Technology, Japan
Australian National University, Research School of Earth Sciences, Australia
Universidad de Granada, Spain
Nagoya University, Japan
Tohoku University, Japan
University of California Santa Cruz, United States
Volume Title: AGU 2013 fall meeting
Source: American Geophysical Union Fall Meeting, Vol.2013; American Geophysical Union 2013 fall meeting, San Francisco, CA, Dec. 9-13, 2013. Publisher: American Geophysical Union, Washington, DC, United States
Note: In English
Summary: The last glacial is an interesting time in climate history. The growth and decay of large northern hemisphere ice sheets acting in harmony with major changes in ocean circulation amplified climate variations and resulted in severe and rapid climate swings throughout this time. The variability is not limited to climate but includes rapid, large scale changes in sea level recorded by tropical corals (eg., Yokoyama and Esat, 2011 Oceanography). Research done in the last decade using corals provides a better picture of the climate system, though only a few samples older than 15 ka are available. The Integrated Ocean Drilling Program (IODP) Expedition 325 drilled 34 holes across 17 sites in the Great Barrier Reef, Australia to recover fossil coral reef deposits. We recovered reef materials from water depth to 126 m that ranged in age from 9,000 years to older than 30,000 years ago covering several paleoclimatologically important events, including the Last Glacial Maximum. Two transects separated more than 600 km apart show an identical sea-level history thereby verifying the reliability of the records. Radiometrically dated corals and coralline algae indicate periods of rapid sea-level fluctuation at this time, likely due to complex interactions between ocean currents and ice sheets of the North Atlantic.
Year of Publication: 2013
Research Program: IODP Integrated Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Cenozoic; Coral Sea; Expedition 325; Great Barrier Reef; Great Barrier Reef Environmental Changes; Integrated Ocean Drilling Program; Last glacial maximum; Pacific Ocean; Paleoclimatology; Paleoenvironment; Quaternary; Reefs; South Pacific; Southwest Pacific; West Pacific
Coordinates: S195100 S152800 E1502900 E1454900
Record ID: 2015085831
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