Arid
DOI10.1007/s12665-014-3492-2
An isotopic study on water system of Lake Barkol and its implication for Holocene climate dynamics in arid central Asia
Lu, Yanbin1,2,3; An, ChengBang2; Zhao, Jiaju2
通讯作者Lu, Yanbin
来源期刊ENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
EISSN1866-6299
出版年2015
卷号73期号:3页码:1377-1383
英文摘要

Mechanism of arid central Asia climate dynamics is still an open question even it has been studied for a long time. Interpreting climatic proxy data properly is crucial for better understanding the paleoclimate in such a sensitive area and its role in the earth system. According to the analysis of water stable isotope (delta O-18 and delta D), Lake Barkol catchment obeys the typical isotopic model of a hydrologically closed lake: Lake input water inherits the feature of the weighted mean annual isotopes in precipitation, and lake water isotopes move along the local evaporation line from the start point of input water isotopes, modulated by the regional effective moisture. Based on the modern water isotopes and its relation to the climate, sediment carbonate oxygen isotope (delta O-18 carb) record reinterpretation suggests that the Asian monsoon incursion to arid central Asia area alone is unlikely the reason for the early Holocene delta O-18 carb negative, as the calculated extreme summer rainfall delta O-18 change to compensate the more negative delta O-18 carb in the early Holocene is far beyond our knowledge of precipitation isotopes in the real world. Besides, a 40 % of winter precipitation increase could explain the delta O-18 negative change in the early Holocene, which does, more importantly, reconcile the contradiction between the pollen Aretemisia/Chenopodiaceae effective moisture and delta O-18 records.


英文关键词Lake water Oxygen isotope Holocene Climate change Arid central Asia
类型Article
语种英语
国家Peoples R China ; USA
收录类别SCI-E
WOS记录号WOS:000348340900037
WOS关键词NORTHERN XINJIANG ; NORTHWEST CHINA ; SUMMER MONSOON ; RECORD ; PRECIPITATION ; SEDIMENTS ; MOISTURE
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
来源机构兰州大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186978
作者单位1.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China;
2.Lanzhou Univ, MOE, Key Lab Western Chinas Environm Syst, CAEP, Lanzhou 730000, Peoples R China;
3.Univ Minnesota, Dept Earth Sci, Minneapolis, MN USA
推荐引用方式
GB/T 7714
Lu, Yanbin,An, ChengBang,Zhao, Jiaju. An isotopic study on water system of Lake Barkol and its implication for Holocene climate dynamics in arid central Asia[J]. 兰州大学,2015,73(3):1377-1383.
APA Lu, Yanbin,An, ChengBang,&Zhao, Jiaju.(2015).An isotopic study on water system of Lake Barkol and its implication for Holocene climate dynamics in arid central Asia.ENVIRONMENTAL EARTH SCIENCES,73(3),1377-1383.
MLA Lu, Yanbin,et al."An isotopic study on water system of Lake Barkol and its implication for Holocene climate dynamics in arid central Asia".ENVIRONMENTAL EARTH SCIENCES 73.3(2015):1377-1383.
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