Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 1866-6280 |
EISSN | 1866-6299 |
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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