The aeolian component inferred from lake sediments in China

Zhang, Bowei; Liu, Xingqi; Li, Junfeng

doi:10.1016/j.aeolia.2021.100700

Cited by 12 publications

(13 citation statements)

References 65 publications

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“…Knowledge of the dust storm activities in Northwest China is critical to understanding the response of aeolian activity to climate changes and human impacts, and evaluating its potential impacts on ecology, environment, and regional sustainability. Most of the previous studies suggested a similar response of dust storm activities to climate fluctuation, that is, marked increases in dust storm activity generally coincide with cold conditions (Chen et al., 2013; Zhang et al., 2020; S. Zhang et al., 2021). The strengthening of Siberian High and westerlies, characterized by cold and strong winds, has been widely regarded as a dominant factor for dust storm outbreaks (Chen et al., 2013; Huang et al., 2011; S. Zhang et al., 2021).…”

Section: Introductionmentioning

confidence: 78%

“…Most of the previous studies suggested a similar response of dust storm activities to climate fluctuation, that is, marked increases in dust storm activity generally coincide with cold conditions (Chen et al., 2013; Zhang et al., 2020; S. Zhang et al., 2021). The strengthening of Siberian High and westerlies, characterized by cold and strong winds, has been widely regarded as a dominant factor for dust storm outbreaks (Chen et al., 2013; Huang et al., 2011; S. Zhang et al., 2021). Whereas, some other studies also found that enhanced dust activities around Qaidam Basin and Tibetan Plateau are broadly synchronous with warming periods (Thompson et al., 2000; Wu et al., 2020).…”

Section: Introductionmentioning

confidence: 78%

“…On one hand, declining in surface wind speed, which is modulated by reduced surface pressure gradients and weakened atmospheric circulations due to increased air temperature, could be responsible for the decreasing trend of dust storms. For example, the dust storms recorded in Lake Karakul (Zhang et al., 2020) and Lake Daihai (S. Zhang, Xu, Lan, et al., 2021) decreased clearly during the last century, suggesting that the decreased wind speed under a global warming scenario weakens dust storm activities on annual to decadal timescales over North China (Zhang et al., 2020). On the other hand, changes in soil moisture influence dust activities by modulating dust supplies on multidecadal to centennial timescales (Wang et al., 2022).…”

Section: Influence Of Late Holocene Hydroclimatic Variations On Dust ...mentioning

confidence: 99%

“…Lake sediments continuously record eolian dust falls, and therefore have been widely used to reconstruct long‐term dust storm histories (Chen et al., 2020; He et al., 2015; Zhang et al., 2020; S. Zhang et al., 2021). In this study, we present a ∼1,600‐year dust storm history based on sedimentary grainsize from Lake Hurleg and Lake Qinghai on the northeastern Tibetan Plateau (NETP) (Figure 1; see hydroclimatic backgrounds in Text S1 and methods in Text S2 in Supporting Information ), and explore the potential driving mechanisms of dust storms on centennial scales, with special concern on distinguishing potential natural and anthropogenic forcing.…”

Section: Introductionmentioning

confidence: 99%

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Prolonged Drought Enhances Northwest China Dust Storm Activity

Jin

Lan

et al. 2022

JGR Atmospheres

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The patterns and forcing mechanism of dust storms in arid Northwest China remain unclear and debated due to lack of reliable long‐term geological records. Here we present a ∼1,600‐year dust storm history in Northwest China based on the sedimentary coarse fraction (>63 μm) retrieved from Lake Hurleg and Lake Qinghai on the northeastern Tibetan Plateau (NETP). The NETP dust storm history, which agrees well with those from North China, shows two prolonged intervals of high dust storm occurrences during the Medieval Warm Period and the past century, and two prolonged weakened dust storm intervals from ∼400 to 700 CE and during the Little Ice Age. The temporal variation in NETP dust storm activities is out‐of‐phase with moisture records over central Asia, with enhanced dust storms corresponding to warm‐dry intervals, and vice versa. The prolonged centennial warm‐dry climates over arid Northwest China to arid central Asia could have led to decreased soil moisture, deteriorated vegetation cover, and increased dust particle supply and dust storm activities; while the prolonged centennial cold‐wet climates could have increased soil moisture, vegetation cover, and decreased dust storm activities. We contend that whilst human impact could be responsible for the obviously increased eolian dust flux in the most recent century, it is most likely that the prolonged natural hydroclimatic conditions regulate the global dust storm activity before the Anthropocene.

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Section: Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 78%

Section: Influence Of Late Holocene Hydroclimatic Variations On Dust ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prolonged Drought Enhances Northwest China Dust Storm Activity

Jin

Lan

et al. 2022

JGR Atmospheres

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“…Bivariate plots of the discriminant functions based on grain size parameters are also used to classify sediments of unknown origin and decipher the depositional processes in different environmental settings such as desert, coastal, and lacustrine ecosystem using grain size parameters [12,[15][16][17][18]22,23]. Several researchers proposed unmixing algorithms to differentiate the depositional processes and source environments using grain size data from sediment [9][10][11][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Deciphering Depositional Environment of Playa Lakes Using Grain Size Parameters in the Arid and Semi-Arid Region of Rajasthan, India

et al. 2022

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This study encompasses the grain size distribution of the playa lakes (Pachpadra, Pokhran, and Didwana) of the Thar Desert in Rajasthan, India. The grain size of sediment particles is the most fundamental feature, giving essential information regarding their origin, transport history, and depositional conditions. The aeolian and fluvial transport processes were evaluated through environmentally sensitive grain size subpopulations to identify the differential sedimentary sources and dynamics in the playas. End-member modelling further determined the sediment grain size distribution through statistical analysis. The playa sediments mainly consist of very fine sand (46–54%) and very coarse silt (22–37%). The results show that the average fine fraction of Pachpadra, Pokhran, and Didwana playa was 46.29%, 66.11%, and 66.28%, respectively. In contrast, the average coarser fraction deposition in Pachpadra, Pokhran, and Didwana corresponds to 53.71%, 33.89%, and 33.72%, respectively. This suggests that the playas mostly contain aeolian sediment rather than fluvial sediment transported by dust/sand storms. Additionally, the textural pattern and depositional distribution of the sediments determined through the Passega CM diagram and bivariate plots indicate that 82% of the samples were poorly sorted, and 18% were very poorly sorted. Furthermore, an environmentally sensitive grain size component (ESGSC) was also assessed to identify the spatial variability and transport processes of sediment between these playas. Three ESGSCs in Pokhran (250 µ, 31 µ, and 2 µ) and Pachpadra (125 µ, 31 µ, and 4 µ), while two ESGSCs in Didwana playa (125 µ and 16 µ) were identified, indicating sediment deposition with moderate velocity in a low energy environment with a mixed sediment population transported by aeolian and fluvial activities.

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Millennial‐ to centennial‐scale anti‐phase relationship between the Westerlies and the East Asian summer monsoon and its cultural response along the Silk Roads after a great earthquake in southern Altay ~ 3500 cal a BP

Fan

Jiang

et al. 2022

J Quaternary Science

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It is strongly debated whether the Westerlies and the East Asian summer monsoon (EASM) are in‐phase, anti‐phase or out‐of‐phase, and how hydroclimatic changes in the above two climate systems affected trans‐Eurasian cultural exchanges during the late Holocene. In this study, we establish a 3500‐a‐long paleoclimatic sequence based on high‐resolution analyses of sedimentological and geochemical data of a well‐dated sediment core from Yileimu Lake in southern Altay. High percentages of the >63‐µm fraction and high values of Zr/Rb and Rb/Sr ratios indicate strong transport of weakly weathered, coarse sediments into the depocenter of the lake caused by enhanced surface runoff and catchment erosion associated with a wet climate, and vice versa. High values of Ca and total inorganic carbon (TIC) contents imply increased precipitation of endogenic carbonates in the lake water under intense evaporation associated with a dry climate, and vice versa. This new record indicates two wet intervals at 3500–2300 and 600–100 cal a bp, interrupted by a severe and prolonged dry interval from 2300 to 1000 cal a bp, and a mild dry interval with occasionally wet conditions from 1000 to 600 cal a bp. These results are broadly consistent with other paleoclimatic records in Westerlies‐dominated Asia and are generally anti‐phase with those in the EASM region. We suggest that a strengthening/weakening and southward/northward migration of the Westerlies during a negative/positive phase of the North Atlantic Oscillation (NAO) transported more/less water vapor into arid Asia. Meanwhile, a decreasing/increasing El Niño‐Southern Oscillation (ENSO) superimposed on a southward/northward shift of the Intertropical Convergence Zone (ITCZ) triggered a weakening/strengthening and southward/northward movement of the West‐Pacific subtropical high (WPSH), resulting in decreasing/increasing EASM intensity. In addition, the wet climate from 3500 to 2300 cal a bp may have contributed to the development of nomadic herding in the eastern Eurasian Steppe and Altay region, and to the opening of the proto‐Silk Roads. Potentially, intense seismic activities in the Altay Mountains ~3500 cal a bp may have also promoted the opening of the proto‐Silk Roads by forcing the herdsmen to move to the inter‐mountainous basins. The strong EASM intensity from 2300 to 1000 cal a bp in eastern China may have contributed to the creation of the ancient Silk Roads by the Han Dynasty.

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The aeolian component inferred from lake sediments in China

Cited by 12 publications

References 65 publications

Prolonged Drought Enhances Northwest China Dust Storm Activity

Prolonged Drought Enhances Northwest China Dust Storm Activity

Deciphering Depositional Environment of Playa Lakes Using Grain Size Parameters in the Arid and Semi-Arid Region of Rajasthan, India

Millennial‐ to centennial‐scale anti‐phase relationship between the Westerlies and the East Asian summer monsoon and its cultural response along the Silk Roads after a great earthquake in southern Altay ~ 3500 cal a BP

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