气候变化领域集成服务门户(CCPortal): Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co

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DOI	10.1007/s11434-012-5083-5
	Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co
	Ju JianTing; Zhu LiPing; Feng JinLiang; Wang JunBo; Wang Yong; Xie ManPing; Peng Ping; Zhen XiaoLin; Lu XinMiao
通讯作者	Ju, JT (通讯作者)
发表日期	2012
ISSN	1001-6538
EISSN	1861-9541
起始页码	2433
结束页码	2441
卷号	57 期号:19
英文摘要	Under the background of global warming, some lakes on the Tibetan Plateau (TP) are potentially sensitive to temperature change. With a case study of Pumayum Co, where glacier meltwater is important to supply (we call this a glacier-fed lake hereafter), we analyze the sensitivity of lake sediment grain size to temperature change. This is done by resolving the modern hydrodynamic process, coupled with comparison of paleoclimatic proxies. According to the spatial distributions of parameters, percentage of grain size and the grain size frequency distribution curve, hydrodynamic processes are analyzed. Five clastic sedimentation types are thereby discriminated. In the open lake area, suspended load transport is the main transport agent. Grain Size Trend Analysis (GSTA), a sediment dynamics model, reveals a trend toward eastward transport. This indicates that the largest and glacier-fed river, the Jiaqu River, influences the entire lake (not just the subsurface alluvial fan), and that lake sediment grain size may serve as a temperature indicator. Time series comparison between grain size of a short core from the central lake and meteorological data confirms this temperature indication, which in turn shows reliability of the method discriminating the hydrodynamic process. This case study will improve the ability of paleoclimatic reconstruction using lake sediment in glacier-fed lakes on the Tibetan Plateau.
关键词	SEDIMENT TRANSPORT ENVIRONMENTAL-CHANGE CLIMATE-CHANGE TREND ANALYSIS PUMOYUM CO RECORD MONSOON CORES AREA FLUCTUATIONS
英文关键词	grain size; environmental significance; Pumayum Co; hydrodynamic process; grain size trend analysis
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000305564000015
来源期刊	CHINESE SCIENCE BULLETIN
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/258004
推荐引用方式 GB/T 7714	Ju JianTing,Zhu LiPing,Feng JinLiang,et al. Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co[J]. 中国科学院青藏高原研究所,2012,57(19).
APA	Ju JianTing.,Zhu LiPing.,Feng JinLiang.,Wang JunBo.,Wang Yong.,...&Lu XinMiao.(2012).Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co.CHINESE SCIENCE BULLETIN,57(19).
MLA	Ju JianTing,et al."Hydrodynamic process of Tibetan Plateau lake revealed by grain size: Case study of Pumayum Co".CHINESE SCIENCE BULLETIN 57.19(2012).