HR: 09:50h
AN: PP31E-08    [Abstracts]
TI: The late Pliocene-early Pleistocene 100-kyr problem
AU: King, J
EM: jking@gso.uri.edu
AF: URI Graudate School of Oceanography, South Ferry Road, Narragansett, RI 02882, United States
AU: * Nie, J
EM: junsheng@gso.uri.edu
AF: URI Graudate School of Oceanography, South Ferry Road, Narragansett, RI 02882, United States
AB: The forcing mechanisms for the dominant 100-kyr ice volume cycles over the last one Myr have been extensively studied. Little is known, however, about the 100-kyr ice volume and other climatic cycles immediately before 1 Ma except that they are coherent with the 100-kyr eccentricity cycles. Here we show that the amplitude of the 100-kyr cycles in the intensity of East Asian summer monsoon and ice volume between 3-1 Ma does not follow that of eccentricity, but follows that of benthic carbon isotopes, suggesting that, even in the Pliocene, the link between eccentricity and climate is complicated.
DE: 1616 Climate variability (1635, 3305, 3309, 4215, 4513)
DE: 1620 Climate dynamics (0429, 3309)
DE: 4934 Insolation forcing
DE: 4946 Milankovitch theory
DE: 4962 Thermohaline
SC: Paleoceanography and Paleoclimatology [PP]
MN: 2007 Fall Meeting