| Title | Long-term sea surface temperature and climate change in the Australian-New Zealand region |
| Author | Barrows, T.T.; Juggins, S.; De Deckker, P.; Calvo, E.; Pelejero, C. |
| Author Affil | Barrows, T.T., Australian National University, Department of Nuclear Physics, Canberra, A.C.T., Australia. Other: University of Newcastle, United Kingdom; Consejo Superior de Investigaciones Cientificas, Spain |
| Source | Paleoceanography, 22(2), PA2215. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0883- 8305 |
| Publication Date | Jun. 2007 |
| Notes | In English. 70 refs. GeoRef Acc. No: 285428. CRREL Acc. No: 62005538 |
| Index Terms | radioactive age determination; carbon isotopes; climatic change; isotopes; marine deposits; oxygen; paleoclimatology; Pleistocene; Quaternary deposits; radioactive isotopes; sediments; Antarctica; Australia; Deep Sea Drilling Project--DSDP Site 594; New Zealand; Pacific Ocean--South Pacific; absolute age; Australasia; C-13/C-12; C-14; carbon; Cenozoic; climate change; cores; Deep Sea Drilling Project; DSDP Site 594; Foraminifera; Holocene; ice cores; Invertebrata; IPOD; isotope ratios; Leg 90; marine sediments; microfossils; O-18/O-16; Pacific Ocean; paleotemperature; planktonic taxa; Protista; Quaternary; sea-surface temperature; South Pacific; stable isotopes; upper Pleistocene |
| Abstract | We compile and compare data for the last 150,000 years from four deep-sea cores in the midlatitude zone of the Southern Hemisphere. We recalculate sea surface temperature estimates derived from foraminifera and compare these with estimates derived from alkenones and magnesium/calcium ratios in foraminiferal carbonate and with accompanying sedimentological and pollen records on a common absolute timescale. Using a stack of the highest-resolution records, we find that first-order climate change occurs in concert with changes in insolation in the Northern Hemisphere. Glacier extent and inferred vegetation changes in Australia and New Zealand vary in tandem with sea surface temperatures, signifying close links between oceanic and terrestrial temperature. In the Southern Ocean, rapid temperature change of the order of 6°C occurs within a few centuries. (mod. journ. abst.) |
| URL | http://hdl.handle.net/10.1029/2006PA001328 |
| Publication Type | journal article |
| Record ID | 84279 |