Pleistocene precession forcing of the upper ocean structure variations of the southern South China Sea

Author(s): Tian Jun; Wang Pinxian; Cheng Xinrong
Author Affiliation(s): Primary:
Tongji University, Laboratory of Marine Geology, Shanghai, China
Volume Title: Progress in Natural Science
Source: Progress in Natural Science, 14(11), p.1004-1009. Publisher: Science Press, Beijing, China. ISSN: 1002-0071
Note: In English. 28 refs.; illus., incl. sketch map
Summary: The precession plays a dominant role in driving the tropical monsoon variations. Our high resolution, millennial scale marine isotope records from ODP Site 1143 in the southern South China Sea (SCS) present the detailed history of the upper ocean structure variations over the past 1.56 Ma on glacial/interglacial timescale. The cross spectral analyses between the Earth's orbital variations and the isotopic differences reveal a high coherency between the East-Asian-monsoon-related thermocline and nutricline variations of the SCS and the precession. The variations of monsoon-related isotopic difference between species also demonstrate periodicities of 11-, 12- and 14-thousand years near semi-precession which originates in the tropics, highlighting the importance of the precession in driving the east Asian monsoon changes.
Year of Publication: 2004
Research Program: ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Benthic taxa; Biostratigraphy; C-13/C-12; Carbon; Cenozoic; Climate forcing; Continental slope; Foraminifera; Glacial environment; Globigerinacea; Globigerinidae; Globigerinoides; Globigerinoides ruber; Holocene; Interglacial environment; Invertebrata; Isotope ratios; Isotopes; Leg 184; Magnetostratigraphy; Marine environment; Methods; Microfossils; Milankovitch theory; Monsoons; North Pacific; Northwest Pacific; Nutricline; Nutrients; O-18/O-16; ODP Site 1143; Ocean Drilling Program; Orbital forcing; Oxygen; Pacific Ocean; Paleo-oceanography; Paleoecology; Planktonic taxa; Pleistocene; Precession; Protista; Pulleniatina obliquiloculata; Quaternary; Relative age; Rotaliina; South China Sea; Southern South China Sea; Stable isotopes; Thermocline; West Pacific
Coordinates: N092143 N092143 E1131707 E1131707
Record ID: 2006037556
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