中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A test of the relative importance of iron fertilization from aeolian dust and volcanic ash in the stratified high-nitrate low-chlorophyll subarctic Pacific Ocean

文献类型:期刊论文

作者Chen, Ting2,6; Liu, Qingsong3,6; Roberts, Andrew P.5; Shi, Xuefa1,3; Zhang, Qiang4
刊名QUATERNARY SCIENCE REVIEWS
出版日期2020-11-15
卷号248页码:8
ISSN号0277-3791
关键词Diatoms Iron fertilization HNLC Intensification of northern hemisphere glaciation Plio-Pleistocene transition North Pacific Ocean
DOI10.1016/j.quascirev.2020.106577
英文摘要To test the biological effectiveness of iron fertilization by Asian aeolian dust and volcanic ash in the stratified high-nitrate, low-chlorophyll subarctic Pacific Ocean over long-time scales, we analysed sediments with ages between 2.8 and 0.9 Ma at ODP Site 885/886. This site lies far from the influence of other iron sources (e.g. icebergs or lateral iron transportation) and the water column has been stratified since intensification of northern hemisphere glaciation (iNHG) at similar to 2.7 Ma, which limits nutrient up-welling and makes it an ideal location for testing iron bioavailability of different atmospheric sources that fell onto the surface ocean. We investigate diatom assemblages and opal export changes, and compare them with the properties of iron minerals in Asian aeolian dust and volcanic ash. Our results reveal that Asian aeolian dust contains mostly unreactive iron-bearing minerals that supplied limited bioavailable iron for diatom growth at Site 885/886. Diatom productivity changes were dominated by upwelling/stratification changes over long timescales, and by sporadic iron fertilization from volcanic ash inputs. Iron from volcanic ash particles is likely to have become bioavailable because such particles dissolved more readily due to their high porosity and ultra-fine size. (C) 2020 Elsevier Ltd. All rights reserved.
WOS关键词WESTERN NORTH PACIFIC ; EQUATORIAL PACIFIC ; SURFACE SEDIMENTS ; MINERAL DUST ; EOLIAN DUST ; NO EVIDENCE ; PLIOCENE ; PALEOCEANOGRAPHY ; PRODUCTIVITY ; GLACIATION
资助项目National Key Research and Development Program of China[2016YFA0601903] ; National Natural Science Foundation of China (NNSFC)[41430962] ; National Natural Science Foundation of China (NNSFC)[41072136] ; National Natural Science Foundation of China (NNSFC)[41904069] ; Australian Research Council[DP110105419]
WOS研究方向Physical Geography ; Geology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000582803000011
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NNSFC) ; National Natural Science Foundation of China (NNSFC) ; Australian Research Council ; Australian Research Council ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NNSFC) ; National Natural Science Foundation of China (NNSFC) ; Australian Research Council ; Australian Research Council ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NNSFC) ; National Natural Science Foundation of China (NNSFC) ; Australian Research Council ; Australian Research Council ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NNSFC) ; National Natural Science Foundation of China (NNSFC) ; Australian Research Council ; Australian Research Council
源URL[http://ir.iggcas.ac.cn/handle/132A11/98207]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Liu, Qingsong
作者单位1.State Ocean Adm, Key Lab Marine Sedimentol & Environm Geol, Inst Oceanog 1, Qingdao 266061, Peoples R China
2.Southern Univ Sci & Technol SUSTech, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
5.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia
6.Southern Univ Sci & Technol SUSTech, Ctr Marine Magnetism CM2, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
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Chen, Ting,Liu, Qingsong,Roberts, Andrew P.,et al. A test of the relative importance of iron fertilization from aeolian dust and volcanic ash in the stratified high-nitrate low-chlorophyll subarctic Pacific Ocean[J]. QUATERNARY SCIENCE REVIEWS,2020,248:8.
APA Chen, Ting,Liu, Qingsong,Roberts, Andrew P.,Shi, Xuefa,&Zhang, Qiang.(2020).A test of the relative importance of iron fertilization from aeolian dust and volcanic ash in the stratified high-nitrate low-chlorophyll subarctic Pacific Ocean.QUATERNARY SCIENCE REVIEWS,248,8.
MLA Chen, Ting,et al."A test of the relative importance of iron fertilization from aeolian dust and volcanic ash in the stratified high-nitrate low-chlorophyll subarctic Pacific Ocean".QUATERNARY SCIENCE REVIEWS 248(2020):8.

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来源:地质与地球物理研究所

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