气候变化领域集成服务门户(CCPortal): Timing and extent of glacial fluctuations around Mt. Noijin Kangsang on the southern Tibetan Plateau during the Little Ice Age

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DOI	10.1016/j.palaeo.2024.112092
	Timing and extent of glacial fluctuations around Mt. Noijin Kangsang on the southern Tibetan Plateau during the Little Ice Age
	Chen, Xin; Yang, Weilin; Li, Yingkui; Yang, Yanmin; Liu, Jinhua; Liu, Qiang
发表日期	2024
ISSN	0031-0182
EISSN	1872-616X
起始页码	640
卷号	640
英文摘要	Mapping and dating the fresh moraines close to the termini of glaciers have significantly improved the understanding of glacier changes in the past millennium. However, it is challenging to reconstruct the continuous change of glaciers due to the fragmentary nature of the moraine record. We combine glacial modeling with geomorphological mapping and Be-10 surface exposure dating of moraine boulders to reconstruct the fluctuations of two valley glaciers (Qiangyong Glacier and Karola West Valley Glacier) in the Mt. Noijin Kangsang area, southern Tibetan Plateau, during the Little Ice Age (LIA). We first constrain the formation age of the fresh moraine close to Qiangyong Glacier using Be-10 surface exposure dating and re-analyze the six previously published Be-10 exposure ages in front of the Karola West Valley Glacier. Then, the Open Global Glacier Model (OGGM) is used to simulate the continuous changes of the glaciers from 900 to 2000 CE based on the climate records of 8 General Circulation Models (GCMs). The simulated results are verified with mapped lengths and extents of the glaciers and reconstructed ice volumes using an ArcGIS-based flowline model, PalaeoIce. Four Be-10 surface exposure ages indicate that the moraine close to Qiangyong Glacier was formed at 333 +/- 44 a, corresponding to the LIA. The OGGM simulations show four major glacial advances of the two glaciers around 1281 CE, 1473 CE, 1666 CE, and 1837 CE, corresponding to four temperature depressions. The lengths, areas, and volumes of these two glaciers have retreated by 20.5%, 14.7%, and 36.5%, respectively, since the LIA. The OGGM-simulated glacier length and area changes are similar to the mapped results (< 3% differences). Adding to the uncertainties in the ice thickness estimate, the differences between the ice volumes reconstructed by OGGM and PalaeoIce are 6% and 12% for the LIA glaciers in the Karola West Valley and Qiangyong Valley, respectively. This study provides important insights into the response of glaciers to climate change over the past millennium on the southern Tibetan Plateau.
英文关键词	Little Ice Age; Glacier Evolution; Tibetan Plateau; OGGM; PalaeoIce
语种	英语
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:001188915700001
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305154
作者单位	Hebei Normal University; Monash University; Peking University; University of Tennessee System; University of Tennessee Knoxville; East China University of Technology
推荐引用方式 GB/T 7714	Chen, Xin,Yang, Weilin,Li, Yingkui,et al. Timing and extent of glacial fluctuations around Mt. Noijin Kangsang on the southern Tibetan Plateau during the Little Ice Age[J],2024,640.
APA	Chen, Xin,Yang, Weilin,Li, Yingkui,Yang, Yanmin,Liu, Jinhua,&Liu, Qiang.(2024).Timing and extent of glacial fluctuations around Mt. Noijin Kangsang on the southern Tibetan Plateau during the Little Ice Age.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,640.
MLA	Chen, Xin,et al."Timing and extent of glacial fluctuations around Mt. Noijin Kangsang on the southern Tibetan Plateau during the Little Ice Age".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 640(2024).