气候变化领域集成服务门户(CCPortal): Sediment dynamics and hydrologic events affecting small lacustrine systems on the southern-central Tibetan Plateau

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DOI	10.1177/0959683614561885
	Sediment dynamics and hydrologic events affecting small lacustrine systems on the southern-central Tibetan Plateau - the example of TT Lake
	Ahlborn, Marieke; Haberzettl, Torsten; Wang, Junbo; Alivernini, Mauro; Schluetz, Frank; Schwarz, Anja; Su, Youliang; Frenzel, Peter; Daut, Gerhard; Zhu, Liping; Maeusbacher, Roland
通讯作者	Ahlborn, M (通讯作者)
发表日期	2015
ISSN	0959-6836
EISSN	1477-0911
起始页码	508
结束页码	522
卷号	25 期号:3
英文摘要	A sedimentological, geochemical, micropaleontological, and palynological study of a lacustrine sediment record from the small TT Lake (southern-central Tibetan Plateau) shows that the background sedimentation was frequently interrupted by event-related deposits. These event-related deposits are interpreted as the result of hydrologic events that are triggered by above-average precipitation events. In total, 11 events were recorded in the TT Lake sequence. Two types can be differentiated: fluvial runoff events caused by precipitation that carried sediment in suspension into the lake and a sediment mass transport caused by torrential precipitation. The hydrologic events appear to be decoupled from long-term climate and environmental variations, but there is evidence that anthropogenic impact, in terms of pastoralism, might have favored the runoff events. The multi-proxy approach proved to be valuable and allowed for a detailed study of sedimentary processes within the lake and its watershed in order to assess their triggering processes and dynamics. The findings show the complexity of these sedimentary processes and their controlling factors, and the study aims to improve their understanding. This study is the first effort to investigate event-related deposits and sedimentary processes on the Tibetan Plateau and its triggering processes and dynamics by utilizing lacustrine sediment records.
关键词	HOLOCENE CLIMATE VARIABILITY NAM CO TANGRA YUMCO PALEOCLIMATIC CHANGES LATE QUATERNARY RIVER FLOODS DEBRIS FLOWS FRENCH ALPS YR RECORD SEQUENCE
英文关键词	event layer; human impact; lake sediments; multi-proxy approach; precipitation; sediment transport processes; Tibetan Plateau
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000349531500009
来源期刊	HOLOCENE
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/258544
推荐引用方式 GB/T 7714	Ahlborn, Marieke,Haberzettl, Torsten,Wang, Junbo,et al. Sediment dynamics and hydrologic events affecting small lacustrine systems on the southern-central Tibetan Plateau - the example of TT Lake[J]. 中国科学院青藏高原研究所,2015,25(3).
APA	Ahlborn, Marieke.,Haberzettl, Torsten.,Wang, Junbo.,Alivernini, Mauro.,Schluetz, Frank.,...&Maeusbacher, Roland.(2015).Sediment dynamics and hydrologic events affecting small lacustrine systems on the southern-central Tibetan Plateau - the example of TT Lake.HOLOCENE,25(3).
MLA	Ahlborn, Marieke,et al."Sediment dynamics and hydrologic events affecting small lacustrine systems on the southern-central Tibetan Plateau - the example of TT Lake".HOLOCENE 25.3(2015).