The holocene sedimental characteristicand paleoclimatic evolution of Ebinur Lake, XinJiang

Wu, Jian; Wang, Sumin; Wu, Yanhong

doi:10.1007/s11769-996-0038-x

Cited by 6 publications

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“…Increasing 8-16 lm fraction and Cr/Ti, along with TOC and Picea + Betula, suggest a transition to more favourable environmental conditions. The hydrothermal conditions might have reached the highest level over the study period during 8.7-5 ka, which was in accordance with a previous study from Lake Ebinur (Wu et al 1995) and probably corresponded to the regional Holocene Optimum (Mischke et al 2019). At ~6.2 and ~5 ka, sharply decreased values of Picea and Betula, along with relatively low values of Paq and TOC, suggest vegetation degradation during these two dry events.…”

Section: Millennial-scale Climate Variabilitysupporting

confidence: 91%

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Late Quaternary hydroclimate change inferred from lake sedimentary record in arid central Asia

Zhou

Zhang

et al. 2021

Boreas

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Arid central Asia is a key region in the study of global climate change; however, the characteristics and mechanisms of regional hydroclimate changes during the late Quaternary remain poorly known. Here we present a new hydroclimate record from Lake Ebinur in arid northwestern China based on a comprehensive multiproxy analysis. The results show that Lake Ebinur formed at ~33.5 ka under relatively warm and humid conditions that continued to 26.7 ka. The following Last Glacial Maximum was cold and dry from 26.7 to 18.5 ka, most notably during the interval between 21.3 and 18.5 ka, suggesting a two-step hydroclimate change. The moisture conditions started to improve at 15 ka and reached their highest level during the Middle Holocene (8.7-4.4 ka). A comparison of our record with other records in the Northern Hemisphere indicated that the moisture changes in central Asia followed similar variability trends to those of the east Asia monsoon region during the last glacial period, suggesting common driving forces, such as the boreal solar insolation and its associated Northern Hemisphere ice-sheet volume. The Holocene moisture optimum in central Asia was delayed by 2000-3000 years relative to that in east Asia, which demonstrated a large influence of the remnant Northern Hemisphere ice-sheet forcings on the midlatitude Asia atmospheric circulation (e.g. mid-latitude westerlies and Siberian High) in the Early Holocene.

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Section: Millennial-scale Climate Variabilitysupporting

confidence: 91%

“…The hydrothermal conditions might have reached the highest level over the study period during 8.7–5 ka, which was in accordance with a previous study from Lake Ebinur (Wu et al . 1995) and probably corresponded to the regional Holocene Optimum (Mischke et al . 2019).…”

Section: Discussionmentioning

confidence: 99%

Late Quaternary hydroclimate change inferred from lake sedimentary record in arid central Asia

Zhou

Zhang

et al. 2021

Boreas

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“…The highest lake level occurred at approximately 9.0 ka and decreased sharply at approximately 5.0 ka, as indicated by changes in the content of EM4. Pollen and ostracod records from the AZ section, which is close to the EB core location, indicate that the climate became warmer and wetter since 8.3 ka (Wu et al, 1996).…”

Section: Discussionmentioning

confidence: 92%

“…Our inferred Holocene climate conditions in the Ebinur Lake region are consistent with findings of earlier studies. Environmental proxies in the AZ section from Ebinur Lake show that the study region was characterized by humid conditions in the early Holocene and even warmer and wetter climate conditions at 8.3 ka (Wu et al, 1996, 2005). Indeed, a relatively wet early and middle Holocene period was confirmed by numerous lake sediment records from arid central Asia.…”

Section: Discussionmentioning

confidence: 99%

Late Quaternary lake-level and climate changes in arid central Asia inferred from sediments of Ebinur Lake, Xinjiang, northwestern China

Zhou

et al. 2019

Quat. res.

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Arid central Asia plays an important role in global climate dynamics, but large uncertainties remain in our understanding of the region's hydroclimate variability during the Late Quaternary. Here we present a new, high-resolution record of lacustrine sediment grain-size and element chemistry from Ebinur Lake, which was used to infer lake conditions and related climate changes in the study region between ca. 39.2 and 3.6 ka. End-member modeling analysis of grain-size data and PCA of elemental data show that lake level fluctuated dramatically from 39.2 to 34.0 ka. Subsequently, Ebinur Lake experienced a high stand from 34.0 to 28.0 ka, under humid climate conditions. The subsequent period, from 28.0 to 12.0 ka, was characterized by lake regression under dry climate conditions, whereas afterward (12.0–3.6 ka), considerably higher lake levels and humid conditions again prevailed. Millennial-scale abrupt climate changes, such as Heinrich events (H3 and H1) and the Younger Dryas, which are documented in the North Atlantic region, are also detected in the sediment record from Ebinur Lake. Comparisons with other sediment records from arid central Asia generally support the claim that climate change in this region was influenced mainly by variations in North Atlantic sea surface temperatures, through the westerlies.

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Sediment record of environmental change at Lake Lop Nur (Xinjiang, NW China) from 13.0 to 5.6 cal ka BP

Wang

Jia

2016

Chin. J. Ocean. Limnol.

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The holocene sedimental characteristicand paleoclimatic evolution of Ebinur Lake, XinJiang

Cited by 6 publications

References 0 publications

Late Quaternary hydroclimate change inferred from lake sedimentary record in arid central Asia

Late Quaternary hydroclimate change inferred from lake sedimentary record in arid central Asia

Late Quaternary lake-level and climate changes in arid central Asia inferred from sediments of Ebinur Lake, Xinjiang, northwestern China

Sediment record of environmental change at Lake Lop Nur (Xinjiang, NW China) from 13.0 to 5.6 cal ka BP

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