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Effects of Global Geomagnetic Field Variations Over the Past 100,000 Years on Cosmogenic Radionuclide Production Rates in the Earth's Atmosphere

文献类型：期刊论文

作者Panovska, Sanja5; Poluianov, Stepan3,4; Gao, Jiawei1,2,5; Korte, Monika5; Mishev, Alexander3,4; Shprits, Yuri Y.6,7,8; Usoskin, Ilya3,4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2023-08-01
卷号128期号:8页码:17
ISSN号2169-9380
关键词cosmogenic isotopes production rates geomagnetic field geomagnetic excursions Laschamps event
DOI10.1029/2022JA031158
英文摘要The production rates of cosmogenic radionuclides, such as Be-10, C-14, and Cl-36, in the Earth's atmosphere vary with the geomagnetic field and solar activity. For the first time, the production rates of several cosmogenic nuclides are estimated for the past 100 ka based on global, time-dependent geomagnetic field models and a moderate solar-activity level. In particular, the production rates were high with no notable latitudinal dependence during the Laschamps geomagnetic excursion (41 ka BP). The mean global production of Be-10 over the Laschamps excursion was more than two times greater than the present-day one, whereas the increase was 1.9 times for the Norwegian-Greenland Sea excursion (similar to 65 ka), and only 1.3 times for the Mono Lake/Auckland excursion (similar to 34 ka). All analyzed geomagnetic field models covering the past 100 ka, including the modern and Holocene epochs, lead to hemispheric asymmetry in the production rates, persistent overall time ranges, and reflected in the time-averaged nuclide production rates. Production rates predicted by the geomagnetic field models are in good agreement with actual measurements from ice cores and sediment records. These global, long-term production rates are important for a wide range of studies that employ cosmogenic nuclides as a proxy/tracer of different Earth system processes.
WOS关键词COSMIC-RAY ; NUCLIDE PRODUCTION ; CUTOFF RIGIDITIES ; SOLAR MODULATION ; ICE-CORE ; BE-10 ; MODEL ; MINIMUM ; C-14 ; TIMESCALES
资助项目Discovery Fellowship at the GFZ Potsdam, Germany ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; China Scholarship Council[202004910583] ; Academy of Finland[354280] ; Academy of Finland[330064] ; UO grant SARPEDON. ; Projekt DEAL
WOS研究方向Astronomy & Astrophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:001041498100001
资助机构Discovery Fellowship at the GFZ Potsdam, Germany ; Discovery Fellowship at the GFZ Potsdam, Germany ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; China Scholarship Council ; China Scholarship Council ; Academy of Finland ; Academy of Finland ; UO grant SARPEDON. ; UO grant SARPEDON. ; Projekt DEAL ; Projekt DEAL ; Discovery Fellowship at the GFZ Potsdam, Germany ; Discovery Fellowship at the GFZ Potsdam, Germany ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; China Scholarship Council ; China Scholarship Council ; Academy of Finland ; Academy of Finland ; UO grant SARPEDON. ; UO grant SARPEDON. ; Projekt DEAL ; Projekt DEAL ; Discovery Fellowship at the GFZ Potsdam, Germany ; Discovery Fellowship at the GFZ Potsdam, Germany ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; China Scholarship Council ; China Scholarship Council ; Academy of Finland ; Academy of Finland ; UO grant SARPEDON. ; UO grant SARPEDON. ; Projekt DEAL ; Projekt DEAL ; Discovery Fellowship at the GFZ Potsdam, Germany ; Discovery Fellowship at the GFZ Potsdam, Germany ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; Center of Excellence ReSoLVE (University of Oulu) at the University of Oulu, Finland ; China Scholarship Council ; China Scholarship Council ; Academy of Finland ; Academy of Finland ; UO grant SARPEDON. ; UO grant SARPEDON. ; Projekt DEAL ; Projekt DEAL
源URL[http://ir.iggcas.ac.cn/handle/132A11/111375]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Panovska, Sanja
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
3.Univ Oulu, Space Phys & Astron Res Unit, Oulu, Finland
4.Univ Oulu, Sodankyla Geophys Observ, Oulu, Finland
5.Helmholtz Ctr Potsdam, GFZ German Res Ctr Geosci, Sect 2 3, Potsdam, Germany
6.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA
7.Univ Potsdam, Inst Phys & Astron, Potsdam, Germany
8.Helmholtz Ctr Potsdam, GFZ German Res Ctr Geosci, Sect 2 7, Potsdam, Germany
推荐引用方式
GB/T 7714		 Panovska, Sanja,Poluianov, Stepan,Gao, Jiawei,et al. Effects of Global Geomagnetic Field Variations Over the Past 100,000 Years on Cosmogenic Radionuclide Production Rates in the Earth's Atmosphere[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2023,128(8):17.
APA Panovska, Sanja.,Poluianov, Stepan.,Gao, Jiawei.,Korte, Monika.,Mishev, Alexander.,...&Usoskin, Ilya.(2023).Effects of Global Geomagnetic Field Variations Over the Past 100,000 Years on Cosmogenic Radionuclide Production Rates in the Earth's Atmosphere.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,128(8),17.
MLA Panovska, Sanja,et al."Effects of Global Geomagnetic Field Variations Over the Past 100,000 Years on Cosmogenic Radionuclide Production Rates in the Earth's Atmosphere".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 128.8(2023):17.

入库方式： OAI收割

来源：地质与地球物理研究所

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