Journal ArticleDOI
Geologic Approach to the Long-Term History of Atmospheric Circulation
TLDR
Analysis of the particle size, composition, and mass accumulation rate of dust grains provide independent evidence of the intensity of atmospheric circulation and the availability of material in the eolian source region at time scales ranging from 103 to 108 years.Abstract:
Eolian dust preserved in deep-sea pelagic sediments can be used as a proxy indicator of paleoclimate. Analyses of the particle size, composition, and mass accumulation rate of dust grains provide independent evidence of the intensity of atmospheric circulation and the availability of material in the eolian source region. These data provide information on atmospheric circulation and on the climate of the source area at time scales ranging from 103 to 108 years and have the potential to test computer-generated global circulation models.read more
Citations
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Journal ArticleDOI
The paleoclimatic record provided by eolian deposition in the deep sea: The geologic history of wind
TL;DR: The most important change in Cenozoic atmospheric circulation was a severalfold reduction in wind intensity that occurred at the time of the Paleocene-Eocene boundary as mentioned in this paper.
Journal ArticleDOI
Interplay between the Westerlies and Asian monsoon recorded in Lake Qinghai sediments since 32 ka
Zhisheng An,Zhisheng An,Steven M. Colman,Weijian Zhou,Xiaoqiang Li,Eric T. Brown,A. J. Timothy Jull,Yanjun Cai,Yongsong Huang,Xuefeng Lu,Hong Chang,Yougui Song,Youbin Sun,Hai Xu,Weiguo Liu,Zhangdong Jin,Xiaodong Liu,Peng Cheng,Yu Liu,Li Ai,Xiangzhong Li,Xiuju Liu,Libin Yan,Zhengguo Shi,Xulong Wang,Feng Wu,Xiaoke Qiang,Jibao Dong,Fengyan Lu,Xinwen Xu +29 more
TL;DR: The longest and highest-resolution drill core from Lake Qinghai on the northeastern Tibetan Plateau is presented, which uniquely records the variability of both the Westerlies and the ASM since 32 ka, reflecting the interplay of these two systems.
Journal ArticleDOI
Late Cenozoic Eolian deposition in the North Pacific: Asian drying, Tibetan uplift, and cooling of the northern hemisphere
TL;DR: A newly constructed record of eolian dust accumulation from the central North Pacific shows that dust deposition increased by an order of magnitude quite rapidly at 3.6-2.6 Ma as discussed by the authors.
Journal ArticleDOI
Grain-size distribution function of polymodal sediments in hydraulic and aeolian environments, and numerical partitioning of the sedimentary components
TL;DR: A genetic analysis of grain-size components of hydraulic and aeolian sediments demonstrates the following environmental implications: Fluvial sediment is composed of isolated saltation and suspension components as discussed by the authors.
Journal ArticleDOI
Global connections between aeolian dust, climate and ocean biogeochemistry at the present day and at the last glacial maximum
TL;DR: In this paper, present-day sources and properties of dust, synthesise available records of dust deposition at the last glacial maximum (LGM); evaluate the evidence for changes in ocean palaeo-productivity associated with, and possibly caused by, changes in aeolian flux to the oceans at the LGM; and consider the radiative forcing effects of increased LGM dust loadings.
References
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Journal ArticleDOI
Variations in the Earth's Orbit: Pacemaker of the Ice Ages
TL;DR: It is concluded that changes in the earth's orbital geometry are the fundamental cause of the succession of Quaternary ice ages and a model of future climate based on the observed orbital-climate relationships, but ignoring anthropogenic effects, predicts that the long-term trend over the next sevem thousand years is toward extensive Northern Hemisphere glaciation.
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Oxygen isotope and palaeomagnetic stratigraphy of Equatorial Pacific core V28-238: Oxygen isotope temperatures and ice volumes on a 105 year and 106 year scale☆
TL;DR: The core Vema 28-238 as discussed by the authors preserves an excellent oxygen isotope and magnetic stratigraphy and is shown to contain undisturbed sediments deposited continuously through the past 870,000 yr.
Journal ArticleDOI
Oxygen isotope calibration of the onset of ice-rafting and history of glaciation in the North Atlantic region
Nicholas J Shackleton,Jan Backman,Jan Backman,H. Zimmerman,Dennis V. Kent,M.A. Hall,David G Roberts,Detmar Schnitker,Jack G. Baldauf,A. Desprairies,R. Homrighausen,P. Huddlestun,J.B. Keene,A. J. Kaltenback,K.A.O. Krumsiek,Andrew C. Morton,John W. Murray,J. Westberg-Smith +17 more
TL;DR: The first major horizon of ice-rafting occurred at about 2.4 Myr, and was preceded by a minor pulse of icerafting at 2.5 Myr as discussed by the authors, and the carbon isotope record shows that the site has been bathed by a water mass of similar characteristics to present-day North Atlantic deep water at least since 3.5
Journal ArticleDOI
Long-Range Atmospheric Transport of Soil Dust from Asia to the Tropical North Pacific: Temporal Variability
TL;DR: The concentration of airborne soil dust at Enewetak Atoll in April 1979 was 2.3 micrograms per cubic meter but decreased steadily to 0.02 microgramper cubic meter over the next 5 months, suggesting that the spring dust is probably derived from China.