Late quaternary dust flow on the chinese Loess Plateau

An, Zhisheng; Kukla, George; Porter, Stephen C.; Xiao, Jinchong

doi:10.1016/0341-8162(91)90012-m

Cited by 344 publications

(184 citation statements)

References 5 publications

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“…The loess-paleosol sequence in the Chinese Loess Plateau (CLP) has long been documented as a continuous history of dust activity over 2.4 Ma (Liu 1985;An et al 1991). Due to its eolian origin, the loess in the CLP is one of a few direct records of paleowinds that not only aid greatly in reconstructing synoptic-scale paleoclimatology (Porter and An 1995), but also provide climate information on the dust-generated area .…”

Section: Introductionmentioning

confidence: 99%

Provenance of Chinese Loess: Evidence from Stable Lead Isotope

Wu¹,

Ho²,

Sun³

et al. 2011

Terr. Atmos. Ocean. Sci.

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Twenty-seven samples of typical loess and paleosol strata collected in nine different regions of the Chinese Loess Plateau (CLP) were fractionated into PM 1.0 , PM 2.5 , PM 10 and Total Suspended Particulates (TSP) (particulate matter with aerodynamic diameters less than 1.0, 2.5, 10 and ~30 μm, respectively) by a resuspension chamber at the Desert Research Institute (DRI; Reno, NV, United States). The amounts and isotope ratios of lead (Pb) were quantified in the loess samples. Our size-segregated analysis demonstrated that the Pb isotopic composition in the loess-paleosol deposits was preserved after grain-size sorting and that therefore the isotope ratio can serve as a proxy for source tracing. A similar pattern of Pb isotope ratios was observed for sediment collected from potential source regions and the loess samples suggested that the Gobi and deserts in southern Mongolia and northern China are major sources for the deposits in the CLP. No significant deviation of Pb isotope amount was found between the nine samples of loess and paleosol strata, implying the stability of loess sources during the glacial and interglacial regime.

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Section: Introductionmentioning

confidence: 99%

Provenance of Chinese Loess: Evidence from Stable Lead Isotope

Wu¹,

Ho²,

Sun³

et al. 2011

Terr. Atmos. Ocean. Sci.

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“…The grain size, magnetic susceptibility and other parameters of these wind-blown silts provide a relatively continuous terrestrial record of past global climate changes (e.g. Liu, 1985;An et al, 1991;Vandenberghe et al, 1997;Lu and Sun, 2000;Ding et al, 2002). Outside the central Loess Plateau, the loess-palaeosol sequences generally become less complete, and in most cases thinner, depending on their geographic and geomorphic locations (Liu, 1985).…”

Section: Introductionmentioning

confidence: 99%

Dust supply from river floodplains: the case of the lower Huang He (Yellow River) recorded in a loess–palaeosol sequence from the Mangshan Plateau

Prins¹,

Zheng

Beets³

et al. 2008

J Quaternary Science

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The Mangshan Plateau is located on the south bank of the Huang He (Yellow River) just west of the city of Zhengzhou, well outside the Loess Plateau in central China. Mixing models of the grain-size data indicate that the loess deposits are mixtures of three loess components. Comparison of the mixing model with existing models established for a series of loess-palaeosol sequences from the Loess Plateau indicates that the Mangshan loess has been supplied from a proximal dust source, the Huang He floodplain, during major dust outbreaks. The high accumulation rates, the composition of the loess components, and especially the high proportions of a sandy loess component support this. Owing to the exceptionally high accumulation rates, the Mangshan grain size, magnetic susceptibility and carbonate records provide a high-resolution archive of environmental and climate change.

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“…Although dust pulses are evident in Chinese loess [Liu et al, 1985;An et al, 1991;Zhang et al, 1993Zhang et al, , 1994Porter and An, 1995], it has not been possible to apportion the contributions among source regions or even pinpoint the source areas. In this paper, elemental concentrations (Al, Fe, Mg, and Sc) for mineral dust from 12 desert sites in China (Figure 1) were used to estimate the total amount of Chinese desert dust injected into the atmosphere and to evaluate the sources for the dust input to the Loess Plateau during the last glaciation.…”

Section: Introductionmentioning

confidence: 99%

Dust emission from Chinese desert sources linked to variations in atmospheric circulation

Zhang¹,

Arimoto²,

An³

1997

J. Geophys. Res.

511

309

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Abstract. Estimates of atmospheric dust deposition to five Asian/Pacific regions indicate that -800 Tg of Chinese desert dust is injected into the atmosphere annually; about 30% of this is redeposited onto the deserts, 20% is transported over regional scales, primarily within continental China. The remaining 50% of the dust is subject to long-range transport to the Pacific Ocean and beyond. Elemental tracers based on several dustderived elements (A1, Fe, Mg, and Sc) reveal high-frequency variability in the contributions of the western desert sources versus northern high-dust and low-dust desert sources to eolian deposits from the center of the Loess Plateau. Comparisons of the patterns uncovered with climate signals from the remote North Atlantic region for the last glaciation show that shifts in source areas of Asian dust were synchronous with large-scale variations in atmospheric circulation. spring of 1994 were analyzed directly using proton-induced X ray emission (PIXE). The PIXE analyses were performed using the 2.5 MeV protons with a 50 nA beam current produced by the 2 x 1.7 MV tandem accelerator at Beijing Normal University. Using these procedures, we were able to determine the concentrations of 17 elements, but in this paper we only consider the data for Al, Fe, Mg, and Sc. The concentrations of these four elements also were determined by PIXE in eight aliquots of a standard reference material from National Bureau of Chemical Exploration Analysis, China [GSS, 1984]. The results showed that the precision (<10%) and accuracy (<20%) were satisfactory. 3.Results and Discussion Atmospheric Emission of Chinese Desert DustAs a first approximation, all of the Chinese desert dust produced is assumed to deposit in regions A, B, C, D, and E (i.e., deposition equal to production, Figure 1). The total dust deposited is calculated as the sum of the dry plus the wet deposition averaged over each region (Tables 1 and 2 28,041

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Late quaternary dust flow on the chinese Loess Plateau

Cited by 344 publications

References 5 publications

Provenance of Chinese Loess: Evidence from Stable Lead Isotope

Provenance of Chinese Loess: Evidence from Stable Lead Isotope

Dust supply from river floodplains: the case of the lower Huang He (Yellow River) recorded in a loess–palaeosol sequence from the Mangshan Plateau

Dust emission from Chinese desert sources linked to variations in atmospheric circulation

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