DOI: 10.1002/2015GL064530
论文题名: Extreme geomagnetic disturbances due to shocks within CMEs
作者: Lugaz N. ; Farrugia C.J. ; Huang C.-L. ; Spence H.E.
刊名: Geophysical Research Letters
ISSN: 0094-8648
EISSN: 1944-8379
出版年: 2015
卷: 42, 期: 12 起始页码: 4694
结束页码: 4701
语种: 英语
英文关键词: coronal mass ejections
; geomagnetic storm
; magnetopause
; magnetosheath
; shocks
Scopus关键词: Magnetopause
; Magnetosphere
; Orbits
; Radiation belts
; Storms
; Coronal mass ejection
; Dynamic pressure enhancements
; Geomagnetic disturbance
; Geomagnetic storm
; Intense geomagnetic storms
; Magnetosheaths
; Shocks
; Solar wind-magnetosphere coupling
; Geomagnetism
; coronal mass ejection
; extreme event
; geomagnetic storm
; magnetic field
; magnetopause
; magnetosphere
; solar wind
英文摘要: We report on features of solar wind-magnetosphere coupling elicited by shocks propagating through coronal mass ejections (CMEs) by analyzing the intense geomagnetic storm of 6 August 1998. During this event, the dynamic pressure enhancement at the shock combined with a simultaneous increase in the southward component of the magnetic field resulted in a large earthward retreat of Earth's magnetopause, which remained close to geosynchronous orbit for more than 4 h. This occurred despite the fact that both shock and CME were weak and relatively slow. Another similar example of a weak shock inside a slow CME resulting in an intense geomagnetic storm is the 30 September 2012 event, which strongly depleted the outer radiation belt. We discuss the potential of shocks inside CMEs to cause large geomagnetic effects at Earth, including magnetopause shadowing. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948719746&doi=10.1002%2f2015GL064530&partnerID=40&md5=9a2a970a9105b8da3e6bf0e72ecc6ac9
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8264
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Physics, Space Science Center, University of New Hampshire, Durham, NH, United States
Recommended Citation:
Lugaz N.,Farrugia C.J.,Huang C.-L.,et al. Extreme geomagnetic disturbances due to shocks within CMEs[J]. Geophysical Research Letters,2015-01-01,42(12).