Elements and Magnetic Susceptibility Dataset from the Lake Yamzhog Yumco Core in Southern Tibetan Plateau over the Past 2000 Years

GCdataPR ◽  
2020 ◽  
Author(s):  
Chao GUO ◽  
Yuzhen MA

The Holocene ◽  
2015 ◽  
Vol 25 (6) ◽  
pp. 892-899 ◽  
Author(s):  
Xiumei Li ◽  
Jie Liang ◽  
Juzhi Hou ◽  
Wenjing Zhang


2020 ◽  
Author(s):  
Kejia Ji ◽  
Erlei Zhu ◽  
Guoqiang Chu ◽  
Juzhi Hou

<p>Precise age controls are fundamental prerequisites for reconstructing past climate and environment changes. Lakes on the Tibetan Plateau are one of the important archives for studying past climate and environment changes. However, radiocarbon ages for lake sediment core are subject to old radiocarbon reservoir effects, which caused severe problems in constructing age controls for lake sediment cores, especially on the Tibetan Plateau (TP). Here we present a varve chronology over the past 2000 years at Jiang Co on the central TP. The clastic-biogenic varves comprise of a coarse-grained layer and a fine-grained layer observed by petrographic microscope and Electron Probe Micro Analyzer. Varve chronology is supported by measurements of <sup>210</sup>Pb and <sup>137</sup>Cs, which is further used to determine the radiocarbon reservoir ages in the past ~2000 years. The percentage of coarse-grain layer thickness within single varves was considered as proxy for precipitation as the coarse grains were mainly transported by runoff, which is highly correlated with local meteorological observation. During the past 2000 years, the precipitation records show centennial-scale fluctuations that are consistent with regional records. The varve chronology at Jiang Co provides a valuable opportunity to examine variation in reservoir ages on the TP and a robust chronology for reconstructing paleoclimate.</p>



2014 ◽  
Vol 60 (223) ◽  
pp. 879-888 ◽  
Author(s):  
Tian Lide ◽  
Zong Jibiao ◽  
Yao Tandong ◽  
Ma Linglong ◽  
Pu Jianchen ◽  
...  

AbstractNumerous studies have confirmed the rapid retreat of Tibetan Plateau glaciers in recent decades, and resulting reductions in glacier volume. However, high-resolution determinations of the changes in glacier thickness remain sparse. This paper presents results based on differential GPS measurements to accurately measure glacier thickness change over the past few years. Measurements from the lower part of Gurenhekou glacier show an average thickness change of –3.82 m over a 4 year period. On the lower part of Kangwure glacier we measured an average thickness change of –2.70 m over 3 years. On the upper part of Naimona’Nyi glacier (northern branch), western Himalaya, thickness changed by –1.34 m on average between 2008 and 2010, and –0.87 m between 2010 and 2013. Large temporal changes in thinning rates were found on Naimona’Nyi glacier, due to variations in local precipitation. Our measurements also show variable changes in glacier thickness over different parts of each glacier, with little dependence on elevation. The limited data also show glacier thinning in the accumulation zone.



2014 ◽  
Vol 396 ◽  
pp. 75-92 ◽  
Author(s):  
Mitsugu Nishimura ◽  
Tetsuya Matsunaka ◽  
Yoshimune Morita ◽  
Takahiro Watanabe ◽  
Toshio Nakamura ◽  
...  




The Holocene ◽  
2021 ◽  
pp. 095968362110032
Author(s):  
Xiaolong Zhang ◽  
Baiqing Xu ◽  
Jiule Li ◽  
Ying Xie ◽  
Gerd Gleixner

Glaciers on the Tibetan Plateau (TP) are reliable water sources for Asia. Continuously high-resolution and high-accuracy long-term glacier fluctuations have been examined to improve the reliability of predictions regarding future TP glacier behavior under global climate change. In this study, we analyzed physiochemical parameters in typical glaciolacustrine sediments to reconstruct multidecadal activities of the monsoonal Qiangyong Glacier over the past ~2500 years. The results show that the glacier advanced most strongly during 560 BC–AD 100, followed by AD 1050–1850 and AD 600–850. It retreated most severely during AD 1850–present, followed by AD 100–600 and AD 850–1050. This continuous record corresponds well with changes in the temperature and regional precipitation before the Current Warm Period, exhibiting “warm-humid-retreat” and “cold-dry-advance” patterns. This indicates that temperature changes, rather than precipitation variations, control the monsoonal glaciers at the southern TP at multidecadal to centennial scales. As global warming continues, although the precipitation on the southern TP is projected to increase, the mass loss of TP monsoonal glaciers is expected to continue.



2007 ◽  
Vol 39 (4) ◽  
pp. 671-677 ◽  
Author(s):  
Ninglian Wang ◽  
Xi Jiang ◽  
Lonnie G. Thompson ◽  
Mary E. Davis


2021 ◽  
Vol 18 (5) ◽  
pp. 1246-1255
Author(s):  
Dong-liang Zhang ◽  
Yao-ming Li ◽  
Kai-hui Li ◽  
Xue-xi Ma ◽  
Yun-peng Yang


2021 ◽  
pp. 1-9
Author(s):  
Feng Shi ◽  
Anmin Duan ◽  
Qiuzhen Yin ◽  
John T Bruun ◽  
Cunde Xiao ◽  
...  

Abstract The Qinghai–Tibetan Plateau and Arctic both have an important influence on global climate, but the correlation between climate variations in these two regions remains unclear. Here we reconstructed and compared the summer temperature anomalies over the past 1,120 yr (900–2019 CE) in the Qinghai–Tibetan Plateau and Arctic. The temperature correlation during the past millennium in these two regions has a distinct centennial variation caused by volcanic eruptions. Furthermore, the abrupt weak-to-strong transition in the temperature correlation during the sixteenth century could be analogous to this type of transition during the Modern Warm Period. The former was forced by volcanic eruptions, while the latter was controlled by changes in greenhouse gases. This implies that anthropogenic, as opposed to natural, forcing has acted to amplify the teleconnection between the Qinghai–Tibetan Plateau and Arctic during the Modern Warm Period.



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