IGGCAS OpenIR  > 地球与行星物理院重点实验室
Effects of the Laschamps Excursion on Geomagnetic Cutoff Rigidities
Gao, Jiawei1,2,3; Korte, Monika1; Panovska, Sanja1; Rong, Zhaojin2,3; Wei, Yong2,3
2022-02-01
Source PublicationGEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
Volume23Issue:2Pages:20
AbstractToday's geomagnetic field can prevent energetic particles, including solar energetic particles and galactic cosmic rays, from directly hitting the Earth's atmosphere. However, when the geomagnetic field strength is significantly decreased during geomagnetic field excursions or reversals, the geomagnetic field shielding effect becomes less prominent. Geomagnetic cutoff rigidity, as a quantitative estimation of the shielding effect, can be calculated using trajectory tracing or theoretical equations. We use a recent high-resolution continuous geomagnetic field model (LSMOD.2) to study the geomagnetic cutoff rigidity during the Laschamps excursion. Global grids of the geomagnetic cutoff rigidities are presented, in particular for the excursion midpoint when the geomagnetic field is weak and not dipole-dominated anymore at Earth's surface. We compare the cutoff rigidity calculation results between a trajectory tracing program and theoretical equations and we find that the influence of the non-dipole component of the geomagnetic field cannot be ignored during the excursion. Our results indicate that the exposure of Earth's atmosphere to energetic particles of cosmic and solar origin is high and nearly independent of latitude in the middle of the Laschamps excursion. Our results will be useful for future studies associated with cosmic radiation dose rate and cosmogenic isotope production rate during the Laschamps excursion.
Keywordgeomagnetic field paleomagnetic field cutoff rigidity cosmic ray Laschamps excursion energetic particle
DOI10.1029/2021GC010261
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL
WOS KeywordCOSMOGENIC NUCLIDE PRODUCTION ; COSMIC-RAY ; PRODUCTION-RATES ; MAGNETIC-FIELD ; MODELS ; RADIATION ; EARTH ; C-14 ; SUN
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; National Natural Science Foundation of China[41922031] ; National Natural Science Foundation of China[41774188] ; Key Research Program of the Institute of Geology and Geophysics, CAS[IGGCAS-201904] ; Key Research Program of the Institute of Geology and Geophysics, CAS[IGGCAS-202102] ; Key Research Program of Chinese Academy of Sciences[ZDBS-SSW-TLC00103] ; China Scholarship Council[202004910583] ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; Key Research Program of Chinese Academy of Sciences ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; WOA Institution: N/A Blended DEAL: Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL ; Projekt DEAL
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000765651700021
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/104966
Collection地球与行星物理院重点实验室
Corresponding AuthorGao, Jiawei
Affiliation1.GFZ German Res Ctr Geosci, Potsdam, Germany
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Gao, Jiawei,Korte, Monika,Panovska, Sanja,et al. Effects of the Laschamps Excursion on Geomagnetic Cutoff Rigidities[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2022,23(2):20.
APA Gao, Jiawei,Korte, Monika,Panovska, Sanja,Rong, Zhaojin,&Wei, Yong.(2022).Effects of the Laschamps Excursion on Geomagnetic Cutoff Rigidities.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,23(2),20.
MLA Gao, Jiawei,et al."Effects of the Laschamps Excursion on Geomagnetic Cutoff Rigidities".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 23.2(2022):20.
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