Climatic implications of hydrologic changes in two lake catchments on the central Tibetan Plateau since the last glacial

Tian, Qian; Liang, Jie; Wang, Mingda; He, Yue

doi:10.1007/s10933-017-9976-9

Cited by 32 publications

(18 citation statements)

References 49 publications

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“…Present inflow is mainly from the Bogcarg Zangbo River. The mean annual precipitation is ∼316 mm, and the mean annual temperature is ∼0.55°C in this region (Hou et al, 2017). About 15 paleoshorelines are well-preserved on the eastern and southern lake margin and can be identified on Google-Earth images and in the field (Figure 2A).…”

Section: Dagze Co Location and Environmental Parametersmentioning

confidence: 91%

“…The main anions are CO 3 2− , SO 4 2− and Cl − , and the main cations are Na + and K + (Supplementary Table S1). The modern lake area and maximum lake depth are ∼299 km 2 and ∼38 m (Hou et al, 2017), respectively. The basin catchment area is 12845 km 2 (Hou et al, 2017).…”

Section: Dagze Co Location and Environmental Parametersmentioning

confidence: 99%

“…The modern lake area and maximum lake depth are ∼299 km 2 and ∼38 m (Hou et al, 2017), respectively. The basin catchment area is 12845 km 2 (Hou et al, 2017). Present inflow is mainly from the Bogcarg Zangbo River.…”

Section: Dagze Co Location and Environmental Parametersmentioning

confidence: 99%

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Climate Conditions on the Tibetan Plateau During the Last Glacial Maximum and Implications for the Survival of Paleolithic Foragers

Liu

et al. 2020

Front. Earth Sci.

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Environmental conditions on the Tibetan Plateau (TP) during the last glacial maximum (LGM) are poorly known. Existing studies of environmental proxies and climate model simulations are contradictory, with interpretations varying between cold-dry and cold-wet environmental conditions which differentially influenced lake volumes, loess deposition and vegetation communities across the TP. Genetic and archaeological studies suggest anatomically modern paleolithic foragers initially occupied the TP between 60 and 30 ka, and may have seasonally occupied the TP during the LGM. Hence, a better understanding for LGM environmental conditions is needed in order to estimate whether paleolithic foragers could have survived on the TP during the extreme LGM cold stage. Here we report the investigation of lacustrine sediments and beach deposits within two paleoshorelines around Dagze Co on the southern TP, ∼22 and ∼42 m higher than the present lake level. Optical age estimates suggest the sediments were deposited during the LGM and mid-Holocene, respectively. TraCE-21 climate model simulation results suggest that net annual LGM precipitation in the Dagze Co basin was lower than the mid-Holocene, but about the same as that of the past 1,000 years. Combining the optical age estimates with TraCE-21 and CAM4 climate model simulation results, we deduce that increased summer precipitation and glacier meltwater supply, combined with decreased lake surface evaporation, produced LGM lake levels ∼22 m higher than present. We also synthesized paleoenvironmental records reported across the TP spanning the LGM. This synthesis suggests that the LGM climate in the northern TP was cold and dry, but that some of the southern TP was cold and wet. These relatively wetter LGM conditions in the southern TP may have favored the growth of cold-resistant plants which, in turn, may have supported larger herbivore populations, and provided food for paleolithic foragers. We conclude that seasonal or short-term human occupation of the TP during the LGM was thus more likely in the southern TP than in the north.

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Section: Dagze Co Location and Environmental Parametersmentioning

confidence: 91%

Section: Dagze Co Location and Environmental Parametersmentioning

confidence: 99%

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Climate Conditions on the Tibetan Plateau During the Last Glacial Maximum and Implications for the Survival of Paleolithic Foragers

Liu

et al. 2020

Front. Earth Sci.

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“…(c) Weighted average dD values for C 26 , C 28 and C 30 n-alkanoic acids from Lingge Co [13]. (d) Mean grain size record of Chibuzhang Co. (e) Ti record from Jiang Co [14]. (f) Ti record from Daze Co [14].…”

mentioning

confidence: 99%

“…(d) Mean grain size record of Chibuzhang Co. (e) Ti record from Jiang Co [14]. (f) Ti record from Daze Co [14]. (g) Rb/Sr record from Serling Co [8].…”

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confidence: 99%

Climatic and lake environmental changes in the Serling Co region of Tibet over a variety of timescales

Zhu

Wang

et al. 2019

Science Bulletin

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Holocene hydroclimate changes on the north‐eastern Tibetan Plateau inferred from geochemical records in Lake Gyaring

Ning

Jiang

et al. 2021

J Quaternary Science

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The north-eastern Tibetan Plateau (TP) is an ideal region for understanding the interaction between the Asian Summer Monsoon (ASM) and the Westerlies. Here we present a high-resolution elemental record from Lake Gyaring in the source region of the Yellow River to investigate the paleo-hydroclimate changes over the past ~10 ka. Our results show that lithogenic elements (Ti, Rb, Mn, Ti, Zn and Ni) increased while carbonate-related elements (Ca, Sr and Mg) decreased up the core sediments, indicating that the effective moisture on the north-eastern TP has steadily increased throughout the Holocene. This inference is also supported by the gradual augmentation and diminution of Rb/Sr and Ca/(Ti + Fe + Al) ratios, respectively. The persistent wetting trend on the north-eastern TP inferred from our study disagrees with the Holocene pattern of the ASM but corresponds well with that of the Westerlies. This implies that the strengthening Westerlies since the Holocene might have played a more important role than monsoon circulation in controlling the hydroclimate changes on the north-eastern TP. However, the significant increase in the mid-Holocene might be related to the combined effects of the strengthened ASM and Westerlies. Ultimately, Northern Hemisphere solar insolation and the substantial remnant of ice sheets might have controlled Holocene moisture availability on the north-eastern TP through their influence on the intensity of the Westerlies and ASM as well as Atlantic Ocean sea surface temperatures.

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Climatic implications of hydrologic changes in two lake catchments on the central Tibetan Plateau since the last glacial

Cited by 32 publications

References 49 publications

Climate Conditions on the Tibetan Plateau During the Last Glacial Maximum and Implications for the Survival of Paleolithic Foragers

Climate Conditions on the Tibetan Plateau During the Last Glacial Maximum and Implications for the Survival of Paleolithic Foragers

Climatic and lake environmental changes in the Serling Co region of Tibet over a variety of timescales

Holocene hydroclimate changes on the north‐eastern Tibetan Plateau inferred from geochemical records in Lake Gyaring

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