气候变化领域集成服务门户(CCPortal): Little Ice Age on the Tibetan Plateau and its bordering mountains: Evidence from moraine chronologies

CCPortal

DOI	10.1016/j.gloplacha.2014.02.003
	Little Ice Age on the Tibetan Plateau and its bordering mountains: Evidence from moraine chronologies
	Xu, Xiangke; Yi, Chaolu
通讯作者	Xu, XK (通讯作者)
发表日期	2014
ISSN	0921-8181
EISSN	1872-6364
起始页码	41
结束页码	53
卷号	116
英文摘要	Knowledge of the Little Ice Age (LIA) on the Tibetan Plateau (TP) is of critical importance for understanding the climate changes over the past millennium. However, the data associated with the extents and chronologies of TP LIA moraines are highly dispersed in literature. Lack of systematic integration of these data hampers us to further understand the nature of the LIA, especially from a perspective of whole TP. The paper reviews multiple types of dating on LIA moraines to examine the timing and nature of the LIA on the TP. These include ages of radiocarbon C-14, lichenometry, and cosmogenic radionuclide (CRN), by which we can cross-date the same or morphostratigraphically similar landforms. LIA moraines on the TP are usually present a few hundred to thousand meters beyond the contemporary glaciers. The morphological and stratigraphic evidence indicates multiple periods of glacier advance during the last millennium (LIA). At present, available chronology evidence allows to fully compare the timing of the LIA maximum extents. The glaciers reached and retreated from their LIA maximum extents by an asynchronous pattern between different parts of the TP. The majority of glaciers advanced to their LIA maximum extents at late-14th and early-14th century on the southern and northwestern TP, respectively. The glaciers retreated from their LIA maximum extents during 16th to early-18th, late-14th to early-15th and early-16th century on the southern, northwestern, and northeastern TP, respectively. In addition, the glacier advance period of late-18th to early-19th centuries and retreat period of late-19th century are common on the whole TP. Comparison with ice core records suggests that on the TP, the glacier fluctuations responded more strongly to temperature than to precipitation. By comparison of the LIA chronologies from a global perspective, this paper also concludes that the LIA maximum extents occurred commonly earlier on the TP than in North Atlantic and Southern Hemisphere regions, despite of the variability in the timing of LIA maximum extents on the TP and in the North Atlantic regions. Further, more chronology programs, especially in the central TP, are necessarily needed to improve our understanding of the LIA glacier fluctuations. (C) 2014 Elsevier B.V. All rights reserved.
关键词	LATE QUATERNARY GLACIATION EQUILIBRIUM-LINE ALTITUDES GLACIER FLUCTUATIONS CLIMATE-CHANGE URUMQI RIVER SOLAR MODULATION PRODUCTION-RATES AIR-TEMPERATURE SOUTHERN NORWAY MUZTAG ATA
英文关键词	Tibetan Plateau; Little Ice Age; Moraine dating; LIA maximum extent
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000336708400004
来源期刊	GLOBAL AND PLANETARY CHANGE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258252
推荐引用方式 GB/T 7714	Xu, Xiangke,Yi, Chaolu. Little Ice Age on the Tibetan Plateau and its bordering mountains: Evidence from moraine chronologies[J]. 中国科学院青藏高原研究所,2014,116.
APA	Xu, Xiangke,&Yi, Chaolu.(2014).Little Ice Age on the Tibetan Plateau and its bordering mountains: Evidence from moraine chronologies.GLOBAL AND PLANETARY CHANGE,116.
MLA	Xu, Xiangke,et al."Little Ice Age on the Tibetan Plateau and its bordering mountains: Evidence from moraine chronologies".GLOBAL AND PLANETARY CHANGE 116(2014).