Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL078230 |
A Maximum Spreading Speed for Magnetopause Reconnection | |
Walsh, B. M.1; Welling, D. T.2; Zou, Y.3,4; Nishimura, Y.3 | |
2018-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:11页码:5268-5273 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Past observations and numerical modeling find magnetic reconnection to initiate at a localized region and then spread along a current sheet. The rate of spreading has been proposed to be controlled by a number of mechanisms based on the properties within the boundary. At the Earth's magnetopause the spreading speed is also limited by the speed at which a shocked solar wind front can move along the magnetopause boundary. The speed at which a purely north to south rotational discontinuity propagates through the magnetosheath and contacts the magnetopause is measured here using the Block-Adaptive-Tree Solar Wind Roe-Type Upwind Scheme global magnetohydrodynamics model. The propagation speed along the magnetopause is fastest near the nose of the magnetopause and decreases with distance from the subsolar point. The average propagation speed along the dayside magnetopause is 847 km/s. This is significantly larger than observed rates of reconnection spreading at the magnetopause of 30-40 km/s indicating that, for the observed conditions, the speed of front propagation along the magnetopause does not limit or control the spreading rate of reconnection. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000436249900005 |
WOS关键词 | MAGNETIC RECONNECTION ; X-LINE ; INTERPLANETARY SHOCK ; LOCAL TIME ; MAGNETOHYDRODYNAMICS ; PROPAGATION ; EVENTS ; PLASMA ; IMPACT ; EXTENT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28970 |
专题 | 气候变化 |
作者单位 | 1.Boston Univ, Ctr Space Phys, Dept Mech Engn, Boston, MA 02215 USA; 2.Univ Michigan, AOSS, Ann Arbor, MI USA; 3.Boston Univ, Ctr Space Phys, Boston, MA 02215 USA; 4.Univ Corp Atmospher Res, Cooperat Programs Adv Earth Syst Sci, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Walsh, B. M.,Welling, D. T.,Zou, Y.,et al. A Maximum Spreading Speed for Magnetopause Reconnection[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(11):5268-5273. |
APA | Walsh, B. M.,Welling, D. T.,Zou, Y.,&Nishimura, Y..(2018).A Maximum Spreading Speed for Magnetopause Reconnection.GEOPHYSICAL RESEARCH LETTERS,45(11),5268-5273. |
MLA | Walsh, B. M.,et al."A Maximum Spreading Speed for Magnetopause Reconnection".GEOPHYSICAL RESEARCH LETTERS 45.11(2018):5268-5273. |
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