Regional insolation forcing of late Quaternary climate change in the Southern Hemisphere

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doi: 10.1038/nature 03826
Author(s): Vandergoes, Markus J.; Newnham, Rewi M.; Preusser, Frank; Hendy, Chris H.; Lowell, Thomas V.; Fitzsimons, Sean J.; Hogg, Alan G.; Kasper, Haino Uwe; Schlüchter, Christian
Author Affiliation(s): Primary:
University of Maine, Climate Change Institute, Orono, ME, United States
University of Plymouth, United Kingdom
University of Bern, Switzerland
University of Waikato, New Zealand
University of Cincinnati, United States
University of Otago, New Zealand
Universität zu Köln, Federal Republic of Germany
Volume Title: Nature (London)
Source: Nature (London), 436(7048), p.242-245. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 CODEN: NATUAS
Note: In English. 29 refs.; illus.
Summary: The deposits and landforms of the glaciers in the Southern Alps of New Zealand provide a complex record of late Quaternary ice advance linked to global climate events, and associated sedimentary sequences provide evidence for comparing terrestrial changes in S New Zealand with marine and Antarctic records. A moraine-impounded peat bog, > 10 m deep at Okarito Pakihi, situated outside the limit of the Last Glacial Maximum (LGM) ice advance on the West Coast of South Island, was sampled by drilling. The succession comprised lower laminated organic silty sands and upper dark brown organic units which were dated by the 14C and luminescence methods, giving a mean age of 127 ± 29 kyr for the lower laminated unit and indicating its deposition during the later stages of the Last Interglacial. With independently dated pollen records from this peat bog section, the results mainly corroborate the last Milankovitch model of orbital forcing, though an earlier onset and longer duration of the LGM is suggested. Regional insolation variation may, however, have played a greater role in climate change than previously recognized, and may provide an alternative to the bi-polar 'seesaw' to explain differences in inter-hemisphere climate records.
Year of Publication: 2005
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 24 Surficial Geology, Quaternary Geology; Absolute age; Australasia; Biostratigraphy; C-14; Carbon; Cenozoic; Chatham Rise; Climate change; Climate forcing; Correlation; DSDP Site 594; Dates; Deep Sea Drilling Project; IPOD; Insolation; Isotopes; Last glacial maximum; Leg 90; Milankovitch theory; Miospores; New Zealand; O-18/O-16; Okarito Pakiri New Zealand; Orbital forcing; Oxygen; Pacific Ocean; Paleoclimatology; Palynomorphs; Pollen; Quaternary; Radioactive isotopes; South Island; South Pacific; Southern Hemisphere; Stable isotopes; Upper Quaternary
Coordinates: S453129 S453128 E1745653 E1745652
Record ID: 2006014797
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom