An abrupt cooling event early in the last interglacial in the northern South China Sea

Author(s): Tu Xia; Zheng Fan; Wang Jiliang; Cai Huimei; Wang Pinxian; Buhring, C.; Sarnthein, M.
Author Affiliation(s): Primary:
Chinese Academy of Sciences, South China Sea Institute of Oceanology, Guangzhou, China
Tongji University, China
Universität Kiel, Federal Republic of Germany
Volume Title: Science in China. Series D, Earth Sciences
Source: Science in China. Series D, Earth Sciences, 44(10), p.865-870. Publisher: Science in China Press, Beijing, China. ISSN: 1006-9313
Note: In English. 16 refs.; illus.
Summary: High-resolution quantitative analysis of planktonic foraminifera and δ18O records of the section between 96.49-137.6 mcd at ODP Site 1144 on the continental slope of the northern South China Sea reveal an abrupt cooling event of sea surface temperature (SST) during the last interglacial (MIS 5.5, i.e. 5e). The range of the drop in winter SST may come to 7.5°, corresponding to 1.2% of the δ18O value of sea surface water. This event is comparable with those discovered in Western Europe and the northern Atlantic Ocean, but is expressed in a more intensive way. It is inferred that this event may have been induced by middle- to low-latitude processes rather than by polar ice sheet change. Since the Kuroshio-index species Pulleniatina obliquilocu lata displayed the most distinct change during the event, it may also be related to paleo-oceanographic changes in the low-latitude area in the western Pacific Ocean. This event can be considered to be one of the "Younger Dryas-style coolings", and is indicative of climate variability during the last interglacial stage.
Year of Publication: 2001
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Cenozoic; Climate change; Cooling; Foraminifera; Interglacial environment; Invertebrata; Isotope ratios; Isotopes; Kuroshio; Last glacial maximum; Leg 184; Microfossils; North Pacific; Northwest Pacific; O-18/O-16; ODP Site 1144; Ocean Drilling Program; Oxygen; Pacific Ocean; Paleo-oceanography; Paleoclimatology; Paleoecology; Planktonic taxa; Pleistocene; Protista; Pulleniatina; Pulleniatina obliquiloculata; Quaternary; Sea-surface temperature; South China Sea; Stable isotopes; Upper Pleistocene; Upper Weichselian; Weichselian; West Pacific; Younger Dryas
Coordinates: N200311 N200311 E1172508 E1172508
Record ID: 2009023084
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