Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.yqres.2010.12.015 |
Dust variation recorded by lacustrine sediments from arid Central Asia since similar to 15 cal ka BP and its implication for atmospheric circulation | |
An, Cheng-Bang; Zhao, Jiaju; Tao, Shichen; Lv, Yanbin; Dong, Weimiao; Li, Hu; Jin, Ming; Wang, Zongli | |
通讯作者 | An, Cheng-Bang |
来源期刊 | QUATERNARY RESEARCH |
ISSN | 0033-5894 |
EISSN | 1096-0287 |
出版年 | 2011 |
卷号 | 75期号:3页码:566-573 |
英文摘要 | A long dust history established using geological archives from dust provenance areas is necessary to understand the role of atmospheric dust in the global climate system better. Core sediments from a closed-basin groundwater-recharged lake in arid Central Asia were investigated using a multi-proxy approach (e.g. C-14 AMS dating, pollen, and grain size) to trace the dust history since similar to 15 cal ka BP. Pollen analysis showed that before 7.9 cal ka BP, the vegetation was of desert type. After 7.9 cal ka BP, vegetation density increased, probably due to slightly increased moisture. The Chenopodiaceae-dominated desert expanded rapidly at 4.2-3.8 cal ka BP. Grain-size analysis was conducted for samples of lake deposits, modern aeolian dust, and dust trapped in snow, and the data showed that there was strong aeolian dust deposition at 11.8-11.1, 10.6-8, 6.1-4.9, and after 3.3 cal ka BP. This timing corresponds well with periods of increased terrestrial dust fluxes recorded by Greenland ice cores. Our study may document changes in the location and intensity of the Siberia High. These changes may play a more important role in the history of dust emission in arid Central Asia than previously thought. (C) 2010 University of Washington. Published by Elsevier Inc. All rights reserved. |
英文关键词 | Late Glacial Holocene Aeolian dust Grain size Central Asia |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000290831500019 |
WOS关键词 | NORTHWEST PACIFIC-OCEAN ; GREENLAND ICE CORE ; NORTHERN CHINA ; APRIL 1998 ; WEATHER FREQUENCY ; EOLIAN DEPOSITION ; LATE PLEISTOCENE ; TIBETAN PLATEAU ; WIND STRENGTH ; HOLOCENE |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
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/2XILL650/170219 |
作者单位 | Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | An, Cheng-Bang,Zhao, Jiaju,Tao, Shichen,et al. Dust variation recorded by lacustrine sediments from arid Central Asia since similar to 15 cal ka BP and its implication for atmospheric circulation[J]. 兰州大学,2011,75(3):566-573. |
APA | An, Cheng-Bang.,Zhao, Jiaju.,Tao, Shichen.,Lv, Yanbin.,Dong, Weimiao.,...&Wang, Zongli.(2011).Dust variation recorded by lacustrine sediments from arid Central Asia since similar to 15 cal ka BP and its implication for atmospheric circulation.QUATERNARY RESEARCH,75(3),566-573. |
MLA | An, Cheng-Bang,et al."Dust variation recorded by lacustrine sediments from arid Central Asia since similar to 15 cal ka BP and its implication for atmospheric circulation".QUATERNARY RESEARCH 75.3(2011):566-573. |
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