中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院新生代地质与环境重点实验室
Atmospheric Dynamics Patterns in Southern Central Asia Since 800 ka Revealed by Loess-Paleosol Sequences in Tajikistan

文献类型：期刊论文

作者Lu, Hao2,3,6; Jia, Jia1; Yin, Qiuzhen6; Xia, Dunsheng3; Gao, Fuyuan5; Liu, Hao3; Fan, Yijiao3; Li, Zaijun3; Wang, Xin3; Berger, Andre6
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2020-09-16
卷号47期号:17页码:10
ISSN号0094-8276
DOI10.1029/2020GL088320
英文摘要The atmospheric mechanisms responsible for the loess grain-size variations in central Asia are less clear, and an increasing number of studies have found that the coarse-grained component is likely supplied by the surface circulation rather than by the westerlies (westerlies circulation). In this study, we attempt to determine the atmospheric dynamics patterns in the Afghan-Tajik Basin during the past 800 kyr, based on the coarse grain-size fraction of loess, combined with a study of modern dust transport processes. We suggest that the coarse grain-size fraction can be used to indicate the intensity of near-surface winds, while on glacial-interglacial time scales, the variations of loess grain size in Tajikistan are dominated by Northern Hemisphere ice volume via its effect on the strength of the Siberian High. In addition, we suggest that atmospheric greenhouse gases concentration affected the loess grain size during interglacials via their influence on the temperature of southern high latitudes. Plain Language Summary Arid central Asia (ACA) is an important area of eolian dust emission and deposition. The Tajikistan loess sequences arc the oldest loess deposits found so far in central Asia and are an important archive of information about the development of climate and atmospheric circulation in central Asia. However, the implications of grain-size variations of the central Asian loess for climate change and atmospheric dust transport are controversial. Based on the coarse (>25 mu m) grain-size fraction of loess, combined with a study of modern dust transport, we find that the variations of the grain size of the Tajikistan loess on glacial-interglacial time scales were dominated by changes in Northern Hemisphere ice volume (NIIIV) during the last 800 kyr. However, atmospheric greenhouse gases (GIIGs) concentrations may affect the loess grain size during interglacials via their influence on the temperature of southern high latitudes, which may help us understand dust activity against the background of global warming.
WOS关键词ARID CENTRAL-ASIA ; INDIAN-SUMMER MONSOON ; OF-PHASE RELATIONSHIP ; GRAIN-SIZE ; NORTHERN CHINA ; MAGNETIC-SUSCEPTIBILITY ; ANTARCTIC CLIMATE ; ICE-VOLUME ; EAST ; VARIABILITY
资助项目National Natural Science Foundation of China[41877444] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41771213] ; Fonds de la Recherche Scientifique-FNRS
WOS研究方向Geology
语种英语
WOS记录号WOS:000572406100019
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS ; Fonds de la Recherche Scientifique-FNRS
源URL[http://ir.iggcas.ac.cn/handle/132A11/98272]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Lu, Hao; Xia, Dunsheng
作者单位1.Zhejiang Normal Univ, Coll Geog & Environm Sci, Hangzhou, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China
3.Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab West Chinas Environm Syst, Lanzhou, Peoples R China
4.Earthquake Engn & Seismol Acad Sci, Inst Geol, Dushanbe, Tajikistan
5.Lanzhou City Univ, Coll Geog & Environm Engn, Lanzhou, Peoples R China
6.Catholic Univ Louvain, Georges Lemattre Ctr Earth & Climate Res, Earth & Life Inst, Louvain La Neuve, Belgium
推荐引用方式
GB/T 7714		 Lu, Hao,Jia, Jia,Yin, Qiuzhen,et al. Atmospheric Dynamics Patterns in Southern Central Asia Since 800 ka Revealed by Loess-Paleosol Sequences in Tajikistan[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(17):10.
APA Lu, Hao.,Jia, Jia.,Yin, Qiuzhen.,Xia, Dunsheng.,Gao, Fuyuan.,...&Gadoev, Mustafo.(2020).Atmospheric Dynamics Patterns in Southern Central Asia Since 800 ka Revealed by Loess-Paleosol Sequences in Tajikistan.GEOPHYSICAL RESEARCH LETTERS,47(17),10.
MLA Lu, Hao,et al."Atmospheric Dynamics Patterns in Southern Central Asia Since 800 ka Revealed by Loess-Paleosol Sequences in Tajikistan".GEOPHYSICAL RESEARCH LETTERS 47.17(2020):10.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。