NSSC OpenIR  > 空间科学部
Van Allen Probes investigation of the large-scale duskward electric field and its role in ring current formation and plasmasphere erosion in the 1 June 2013 storm
Thaller, S. A.; Wygant, J. R.; Dai, L.; Breneman, A. W.; Kersten, K.; Cattell, C. A.; Bonnell, J. W.; Fennell, J. F.; Gkioulidou, Matina; Kletzing, C. A.; De Pascuale, S.; Hospodarsky, G. B.; Bounds, S. R.; Thaller, SA (reprint author), Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2015
Volume120Issue:6Pages:4531-4543
ISSN2169-9380
Language英语
KeywordElectric Field Ring Current Plasma Convection Plasmasphere Inner Magnetosphere
AbstractUsing the Van Allen Probes, we investigate the enhancement in the large-scale duskward convection electric field during the geomagnetic storm (Dst similar to-120nT) on 1 June 2013 and its role in ring current ion transport and energization and plasmasphere erosion. During this storm, enhancements of similar to 1-2mV/m in the duskward electric field in the corotating frame are observed down to L shells as low as similar to 2.3. A simple model consisting of a dipole magnetic field and constant, azimuthally westward, electric field is used to calculate the earthward and westward drift of 90 degrees pitch angle ions. This model is applied to determine how far earthward ions can drift while remaining on Earth's nightside, given the strength and duration of the convection electric field. The calculation based on this simple model indicates that the enhanced duskward electric field is of sufficient intensity and duration to transport ions from a range of initial locations and initial energies characteristic of (though not observed by the Van Allen Probes) the earthward edge of the plasma sheet during active times (L similar to 6-10 and similar to 1-20keV) to the observed location of the 58-267keV ion population, chosen as representative of the ring current (L similar to 3.5-5.8). According to the model calculation, this transportation should be concurrent with an energization to the range observed, similar to 58-267keV. Clear coincidence between the electric field enhancement and both plasmasphere erosion and ring current ion (58-267keV) pressure enhancements are presented. We show for the first time nearly simultaneous enhancements in the duskward convection electric field, plasmasphere erosion, and increased pressure of 58-267keV ring current ions. These 58-267keV ions have energies that are consistent with what they are expected to pick up by gradient B drifting across the electric field. These observations strongly suggest that we are observing the electric field that energizes the ions and produces the erosion of the plasmasphere.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4616
Collection空间科学部
Corresponding AuthorThaller, SA (reprint author), Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
Recommended Citation
GB/T 7714
Thaller, S. A.,Wygant, J. R.,Dai, L.,et al. Van Allen Probes investigation of the large-scale duskward electric field and its role in ring current formation and plasmasphere erosion in the 1 June 2013 storm[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2015,120(6):4531-4543.
APA Thaller, S. A..,Wygant, J. R..,Dai, L..,Breneman, A. W..,Kersten, K..,...&Thaller, SA .(2015).Van Allen Probes investigation of the large-scale duskward electric field and its role in ring current formation and plasmasphere erosion in the 1 June 2013 storm.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,120(6),4531-4543.
MLA Thaller, S. A.,et al."Van Allen Probes investigation of the large-scale duskward electric field and its role in ring current formation and plasmasphere erosion in the 1 June 2013 storm".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 120.6(2015):4531-4543.
Files in This Item: Download All
File Name/Size DocType Version Access License
201512064531.pdf(1790KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Thaller, S. A.]'s Articles
[Wygant, J. R.]'s Articles
[Dai, L.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Thaller, S. A.]'s Articles
[Wygant, J. R.]'s Articles
[Dai, L.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Thaller, S. A.]'s Articles
[Wygant, J. R.]'s Articles
[Dai, L.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 201512064531.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.