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DOI	10.5194/tc-12-2341-2018
	Age ranges of the Tibetan ice cores with emphasis on the Chongce ice cores, western Kunlun Mountains
	Hou S.; Jenk T.M.; Zhang W.; Wang C.; Wu S.; Wang Y.; Pang H.; Schwikowski M.
发表日期	2018
ISSN	19940416
卷号	12 期号:7
英文摘要	An accurate chronology is the essential first step for a sound understanding of ice core records. However, dating ice cores drilled from the high-elevation glaciers is challenging and often problematic, leading to great uncertainties. The Guliya ice core, drilled to the bedrock (308.6m in length) along the western Kunlun Mountains on the northwestern Tibetan Plateau (TP) and widely used as a benchmark for palaeoclimate research, is believed to reach > 500 ka (thousand years) at its bottom. Meanwhile other Tibetan ice cores (i.e. Dasuopu and East Rongbuk in the Himalayas, Puruogangri in the central TP and Dunde in the north-eastern TP) are mostly of Holocene origin. In this study, we drilled four ice cores into bedrock (216.6, 208.6, 135.8 and 133.8m in length, respectively) from the Chongce ice cap ∼ 30 km to the Guliya ice core drilling site. We took measurements of 14C, 210Pb, tritium and β activity for the ice cores, and used these values in a two-parameter flow model to establish the ice core depth-age relationship. We suggested that the Chongce ice cores might be of Holocene origin, consistent with the other Tibetan ice cores except Guliya. The remarkable discrepancy between the Guliya and all the other Tibetan ice core chronology implies that more effort is necessary to explore multiple dating techniques to confirm the age ranges of the TP glaciers, including those from Chongce and Guliya. © Author(s) 2018.
学科领域	age determination; bedrock; chronology; depth; drilling; glacial history; Holocene; ice core; paleoclimate; China; Dasuopu Glacier; Guliya Ice Cap; Kunlun Mountains; Qinghai-Xizang Plateau; Rongbuk Glacier; Xizang
语种	英语
scopus关键词	age determination; bedrock; chronology; depth; drilling; glacial history; Holocene; ice core; paleoclimate; China; Dasuopu Glacier; Guliya Ice Cap; Kunlun Mountains; Qinghai-Xizang Plateau; Rongbuk Glacier; Xizang
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119103
作者单位	School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100101, China; Laboratory of Environmental Chemistry, Paul Scherrer Institute, Villigen PSI, 5232, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Sidlerstrasse 5, Bern, 3012, Switzerland; Department of Geology, University of Dayton, Dayton, OH 45469, United States; College of Geography and Environment, Shandong Normal University, Jinan, 250358, China
推荐引用方式 GB/T 7714	Hou S.,Jenk T.M.,Zhang W.,et al. Age ranges of the Tibetan ice cores with emphasis on the Chongce ice cores, western Kunlun Mountains[J],2018,12(7).
APA	Hou S..,Jenk T.M..,Zhang W..,Wang C..,Wu S..,...&Schwikowski M..(2018).Age ranges of the Tibetan ice cores with emphasis on the Chongce ice cores, western Kunlun Mountains.Cryosphere,12(7).
MLA	Hou S.,et al."Age ranges of the Tibetan ice cores with emphasis on the Chongce ice cores, western Kunlun Mountains".Cryosphere 12.7(2018).