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DOI | 10.1029/2019GL086474 |
Is the Relation Between the Solar Wind Dynamic Pressure and the Magnetopause Standoff Distance so Straightforward? | |
Samsonov, A. A.1; Bogdanova, Y. V.2; Branduardi-Raymont, G.1; Sibeck, D. G.3; Toth, G.4 | |
2020-04-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA |
英文摘要 | We present results of global magnetohydrodynamic simulations which reconsider the relationship between the solar wind dynamic pressure (P-d) and magnetopause standoff distance (R-SUB). We simulate the magnetospheric response to increases in the dynamic pressure by varying separately the solar wind density or velocity for northward and southward interplanetary magnetic field (IMF). We obtain different values of the power law indices N in the relation RSUB similar to Pd-1/N depending on which parameter, density, or velocity, has been varied and for which IMF orientation. The changes in the standoff distance are smaller (higher N) for a density increase for southward IMF and greater (smaller N) for a velocity increase. An enhancement of the solar wind velocity for a southward IMF increases the magnetopause reconnection rate and Region 1 current that move the magnetopause closer to the Earth than it appears in the case of density increase for the same dynamic pressure. |
英文关键词 | magnetopause standoff distance solar wind dynamic pressure |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000530332600022 |
WOS关键词 | MAGNETIC-FIELD ; FLUX EROSION ; MODEL ; SHAPE ; MOTION ; SHOCK ; SIZE ; FLOW |
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/279877 |
专题 | 气候变化 |
作者单位 | 1.Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England; 2.Rutherford Appleton Lab, RAL Space, Sci & Technol Facil Council, Didcot, Oxon, England; 3.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 4.Univ Michigan, Dept Climate & Space, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Samsonov, A. A.,Bogdanova, Y. V.,Branduardi-Raymont, G.,et al. Is the Relation Between the Solar Wind Dynamic Pressure and the Magnetopause Standoff Distance so Straightforward?[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(8). |
APA | Samsonov, A. A.,Bogdanova, Y. V.,Branduardi-Raymont, G.,Sibeck, D. G.,&Toth, G..(2020).Is the Relation Between the Solar Wind Dynamic Pressure and the Magnetopause Standoff Distance so Straightforward?.GEOPHYSICAL RESEARCH LETTERS,47(8). |
MLA | Samsonov, A. A.,et al."Is the Relation Between the Solar Wind Dynamic Pressure and the Magnetopause Standoff Distance so Straightforward?".GEOPHYSICAL RESEARCH LETTERS 47.8(2020). |
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