DOI: 10.1002/2015GL064294
论文题名: Asymmetric magnetospheric compressions and expansions in response to impact of inclined interplanetary shock
作者: Samsonov A.A. ; Sergeev V.A. ; Kuznetsova M.M. ; Sibeck D.G.
刊名: Geophysical Research Letters
ISSN: 0094-8662
EISSN: 1944-8393
出版年: 2015
卷: 42, 期: 12 起始页码: 4716
结束页码: 4722
语种: 英语
英文关键词: asymmetric magnetopause motion
; inclined interplanetary shocks
; sudden impulse
Scopus关键词: Compaction
; Data compression
; Expansion
; Magnetopause
; Shock waves
; Solar system
; Wind
; Cross-tail currents
; Global MHD simulation
; Horizontal magnetic fields
; Interplanetary shocks
; Low latitudes
; Magnetopause motion
; Magnetospheric response
; Sudden impulse
; Magnetosphere
; asymmetry
; compression
; deformation mechanism
; electric field
; expansion
; magnetic field
; magnetopause
; magnetosphere
; magnetotail
; rock mechanics
; shock wave
英文摘要: We use global MHD simulations to model the magnetospheric response to an inclined shock that first strikes the duskside magnetosphere. The simulations predict several phenomena related specifically to the inclined shocks. The magnetospheric compression on the duskside exceeds that on the dawnside, and the geocentric distance to the dusk magnetopause varies in a simple step-like form. The compression on the dawnside is preceded and followed by expansions. For a moderately strong shock, the expansion magnitude reaches several RE behind the terminator plane. The magnetopause and cross-tail currents in the magnetotail are significantly deformed during and after the shock passage. The position of the magnetotail magnetopause moves by more than 10 RE. This asymmetric magnetopause deformation is mainly related to a strong |Vy| downstream from the inclined shock. The magnetospheric expansion results in a decrease in the horizontal magnetic field at low-latitude stations, as confirmed by observations. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948715852&doi=10.1002%2f2015GL064294&partnerID=40&md5=348e48e7fe25bc290225189903ca70f5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8278
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Saint-Petersburg State University, Saint-Petersburg, Russian Federation
Recommended Citation:
Samsonov A.A.,Sergeev V.A.,Kuznetsova M.M.,et al. Asymmetric magnetospheric compressions and expansions in response to impact of inclined interplanetary shock[J]. Geophysical Research Letters,2015-01-01,42(12).