DOI: 10.1002/2014GL059322
论文题名: The role of ring current particle injections: Global simulations and Van Allen Probes observations during 17 March 2013 storm
作者: Yu Y. ; Jordanova V. ; Welling D. ; Larsen B. ; Claudepierre S.G. ; Kletzing C.
刊名: Geophysical Research Letters
ISSN: 0094-10338
EISSN: 1944-10069
出版年: 2014
卷: 41, 期: 4 起始页码: 1126
结束页码: 1132
语种: 英语
英文关键词: ring current dynamics
; self-consistent treatment of fields and plasma
; substorm injections
; van allen probes
Scopus关键词: Electric fields
; Electromagnetic fields
; Electromagnetic pulse
; Plasma sheaths
; Storms
; Boundary plasmas
; Dipolarization
; Electric field transport
; Global simulation
; Particle injection
; Ring currents
; Self-consistent treatment
; Substorm injections
; Probes
; convection
; electromagnetic field
; numerical model
; observational method
; storm
英文摘要: We simulate substorm injections observed by the Van Allen Probes during the 17 March 2013 storm using a self-consistent coupling between the ring current model RAM-SCB and the global MHD model BATS-R-US. This is a significant advancement compared to previous studies that used artificially imposed electromagnetic field pulses to mimic substorm dipolarization and associated inductive electric field. Several substorm dipolarizations and injections are reproduced in the MHD model, in agreement with the timing of shape changes in the AE/AL index. The associated inductive electric field transports plasma sheet plasma to geostationary altitudes, providing the boundary plasma source to the ring current model. It is found that impulsive plasma sheet injections, together with a large-scale convection electric field, are necessary to develop a strong ring current. Comparisons with Van Allen Probes observations show that our model reasonably well captures dispersed electron injections and the global Dst index. Key Points New capability for studying substorm-associated depolarization and injections Advanced from previous technique that used artificial electromagnetic pulses The model well produces injections and electron fluxes observed from Van Allen Probes ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894283739&doi=10.1002%2f2014GL059322&partnerID=40&md5=3e6926adde75b5170b15bb0d751cfa18
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7602
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Los Alamos National Laboratory, Los Alamos NM, United States
Recommended Citation:
Yu Y.,Jordanova V.,Welling D.,et al. The role of ring current particle injections: Global simulations and Van Allen Probes observations during 17 March 2013 storm[J]. Geophysical Research Letters,2014-01-01,41(4).