Atmospheric Dust Variations in the Ili Basin, Northwest China, During the Last Glacial Period as Revealed by a High Mountain Loess‐Paleosol Sequence

Li, Yue; Song, Yougui; Qiang, Mingrui; Miao, Yunfa; Zeng, Mengxiu

doi:10.1029/2019jd030470

Cited by 43 publications

(28 citation statements)

References 169 publications

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“…The spatial relation of grain size to latitude implies that there is a thinning trend from north to south in the Qilian Mountains (Figure 2(d), (f), (h), (j)). When a typical sandstorm occurs, the sand component gradually increases with the strengthening wind power, while fine particles gradually decrease (Li et al, 2019), which has been confirmed in wind tunnel experiments (Wang et al, 2018). In arid and semi-arid areas of northwest China, the degree of soil development is low, and magnetic minerals are mainly from dust deposition.…”

Section: Discussionmentioning

confidence: 62%

Formation and evolution of mountainous aeolian sediments in the northern Tibet Plateau and their links to the Asian winter monsoon and westerlies since the Last Glacial Maximum

Peng

Liu

et al. 2021

Progress in Physical Geography: Earth and Environment

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The production, transport, and deposition of dust has profound impacts and feedbacks on the regional and global environments. In parallel, the Tibet Plateau (TP) plays an important role in East Asian and global climate systems. Previous studies have shown that the dust can reach the plateau by long-distance transport from the westerlies and by short-distance transport from regional weathering. Here we present three new datasets in the Qilian Mountains of the northern TP, including two mountainous aeolian sedimentary sequences and a surface sample dataset. Proxies include grain size, magnetic susceptibility, mineral composition, total organic carbon, and total nitrogen. Data from surface samples indicate spatial gradient effects in altitude (from low to high) and latitude (from north to south), suggesting dust transport from the Gobi Desert to the plateau. The synthetic analysis of two aeolian sedimentary sequences and paleoclimate simulation data reveals that the northern TP can be a dust transport channel controlled mainly by the Asian winter monsoon and less influenced by the westerlies.

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Section: Discussionmentioning

confidence: 62%

Formation and evolution of mountainous aeolian sediments in the northern Tibet Plateau and their links to the Asian winter monsoon and westerlies since the Last Glacial Maximum

Peng

Liu

et al. 2021

Progress in Physical Geography: Earth and Environment

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“…Moreover, there is no corresponding change in grain size with vegetation change at ∼33.5 ka in the NLK section (Y. Li et al, 2019). This suggests that the variation trend of the grain size of the quartz component is relatively unaffected by humidity changes in the source area.…”

Section: 1029/2020pa003970mentioning

confidence: 96%

“…A study of the NLK section in the Ili Valley suggested that humid conditions developed during the middle of Marine Isotope Stage (MIS) 3 and that the abundance of sand-sized particles consistently increased at the same time (Y. Li et al, 2019). Moreover, there is no corresponding change in grain size with vegetation change at ∼33.5 ka in the NLK section (Y.…”

Section: 1029/2020pa003970mentioning

confidence: 99%

“…The Siberian high-pressure system significantly influences the near-surface wind strength in northeastern central Asia (Y. Li et al, 2019;F. Wang, Lang, et al, 2018;F.…”

Section: Holocene Evolution Of Near-surface Wind Strength In Northeasmentioning

confidence: 99%

“…A strong Siberian high-pressure system would result in strong near-surface wind strength in the study area (Y. Li et al, 2019), and thus lead to high value of mean grain size of the quartz component. Therefore, the high value of mean grain size of the quartz component indicates that stronger Siberian high-pressure system and near-surface wind occurred during the early to middle Holocene and that subsequently the Siberian high-pressure system and near-surface wind strength weakened gradually.…”

Section: Holocene Evolution Of Near-surface Wind Strength In Northeastern Arid Central Asia and Its Forcing Mechanismsmentioning

confidence: 99%

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Evolution of Near‐Surface Wind Strength in Northeastern Arid Central Asia During the Holocene

Gao

Zheng

Jia

et al. 2021

Paleoceanog and Paleoclimatol

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Arid central Asia is one of the most important nonzonal arid regions in the central and eastern part of the middle latitude Eurasian continent (Chen et al., 2008). Northeastern arid central Asia is one of the most important sources of Asian dust due to its unique geomorphic features and dry climate (Kim & Kai, 2007; Shao & Wang, 2003). It has been demonstrated that the solar radiation balance at the Earth's surface, global atmospheric CO 2 concentration, and global hydrological and biogeochemical cycles can be influenced by dust emissions (e.g., Booth et al., 2012; Ginoux et al., 2004). As a significant natural hazard, dust activity is usually related to dust emissions (Dun, 2019), and the temporal trend in dust activity in the area is closely linked to the near-surface wind (Pi et al., 2017; Xi & Sokolik, 2015). However, there are few studies of wind dynamics on a long temporal scale, such as that of the Holocene, and the lack of knowledge of the trend of variation of near-surface wind strength on a long time scale makes it difficult to determine the factors influencing dust activity in this area. The grain size of bulk samples from loess-paleosol sequences in East Asia has been used as a proxy for the East Asian winter monsoon (Xiao et al., 1995). However, bulk samples of Aeolian sediments comprise both pedogenic clay deflated from the dust source regions and argillic clay produced during postdepositional pedogenesis (Z. An et al., 1991; X. Liu et al., 1992). The clay from postdepositional pedogenesis results in a reduction of the grain size of bulk samples, thereby potentially obscuring information about aeolian transport conditions (Xiao et al., 1995). Quartz is one of the most resistant minerals and its physical and chemical properties are very stable during erosion, transport, postdepositional weathering, and pedogenesis. Thus the

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The patchwork loess of Central Asia: Implications for interpreting aeolian dynamics and past climate circulation in piedmont regions

Dave

Lisá

Scardia

et al. 2023

J Quaternary Science

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Reconstruction of mass accumulation rates (MARs) in loess deposits are widely used for interpreting long‐term aeolian transport and climate dynamics in terrestrial environments. However, these interpretations are often driven by a preponderance of reconstructions from individual or selected sites, which can bias our understanding of past climate, especially in the absence of other proxy information. Recent studies on MARs from multiple loess sites in Arid Central Asia (ACA) reveal disparities in the timing of peaks in accumulation between sites, as well as asynchronies with loess flux in the Chinese Loess Plateau (CLP). We investigate this issue by (1) dating five new sites from the western Ili Basin, therefore extending the spatial cover of loess chronologies across ACA and (2) combining that with MARs from >30 sites across ACA and the CLP over the last 60 ka. Our results indicate spatio‐temporal inhomogeneity in the timing and rate of loess deposition across the ACA, and highlight the importance of interrogating local and regional influences on dust supply and transport. Our synthesis of MARs from ACA and the CLP suggests that the timing of peak dust flux as an indicator of large‐scale climate dynamics is best derived from an aggregate of sites; this removes site‐specific bias where local processes or topographic settings outweigh the climate signature.

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Atmospheric Dust Variations in the Ili Basin, Northwest China, During the Last Glacial Period as Revealed by a High Mountain Loess‐Paleosol Sequence

Cited by 43 publications

References 169 publications

Formation and evolution of mountainous aeolian sediments in the northern Tibet Plateau and their links to the Asian winter monsoon and westerlies since the Last Glacial Maximum

Formation and evolution of mountainous aeolian sediments in the northern Tibet Plateau and their links to the Asian winter monsoon and westerlies since the Last Glacial Maximum

Evolution of Near‐Surface Wind Strength in Northeastern Arid Central Asia During the Holocene

The patchwork loess of Central Asia: Implications for interpreting aeolian dynamics and past climate circulation in piedmont regions

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