中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Plasma Sheet Pressure Variations in the Near-Earth Magnetotail During Substorm Growth Phase: THEMIS Observations

文献类型:期刊论文

作者Sun, W. J.1,2,3; Fu, S. Y.3; Wei, Y.1,2,4; Yao, Z. H.5; Rong, Z. J.1,2,4; Zhou, X. Z.3; Slavin, J. A.6; Wan, W. X.1,2,4; Zong, Q. G.3; Pu, Z. Y.3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2017-12-01
卷号122期号:12页码:12212-12228
ISSN号2169-9380
DOI10.1002/2017JA024603
文献子类Article
英文摘要We investigate the plasma sheet pressure variations in the near-Earth magnetotail (radius distance, R, from 7.5 R-E to 12 R-E and magnetic local time, MLT, from 18: 00 to 06: 00) during substorm growth phase with Time History of Events and Macroscale Interactions during Substorms (THEMIS) observations. It is found that, during the substorm growth phase, about 39.4% (76/193) of the selected events display a phenomenon of equatorial plasma pressure (P-eq) decrease. The occurrence rates of P-eq decrease cases are higher in the dawn (04: 00 to 06: 00) and dusk (18: 00 to 20: 00) flanks (> 50%) than in the midnight region (20: 00 to 04: 00, < 40%). The mean values of the maximum percentages of Peq decrease during the substorm growth phases are larger in the dawn and dusk flanks (similar to - 20%) than in the midnight region (similar to > - 16%). The mean value of P-eq increase percentages at the end of substorm growth phase is the highest (similar to 40%) in the premidnight MLT bin (22: 00 to 00: 00) and is almost unchanged in the dawn and dusk flanks. Further investigations show that 13.0% of the events have more than 10% of P-eq decrease at the end of substorm growth phase comparing to the value before the growth phase, and similar to 28.0% of the events have small changes (< 10%), and similar to 59.0% events have a more than 10% increase. This study also reveals the importance of electron pressure (P-e) in the variation of P-eq in the substorm growth phase. The P-e variations often account for more than 50% of the P-eq changes, and the ratios of P-e to ion pressure often display large variations (similar to 50%). Among the investigated events, during the growth phase, an enhanced equatorial plasma convection flow is observed, which diverges in the midnight tail region and propagates azimuthally toward the dayside magnetosphere with velocity of similar to 20 km/s. It is proposed that the P-eq decreases in the near-Earth plasma sheet during the substorm growth phase may be due to the transport of closed magnetic flux toward the dayside magnetosphere driven by dayside magnetopause reconnection. Both solar wind and ionospheric conductivity effects may influence the distributions of occurrence rates for P-eq decrease events and the P-eq increase percentages in the investigated region.
WOS关键词THIN CURRENT SHEET ; MAGNETIC-FIELD ; MAGNETOSPHERIC SUBSTORMS ; NEUTRAL LINE ; LOCATION ; MODEL ; TEMPERATURE ; DEPLETION ; GEOTAIL ; AVERAGE
WOS研究方向Astronomy & Astrophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000422735500036
资助机构NASA(NAS5-02099) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; European Union ; European Union ; European Union ; European Union ; University of Liege ; University of Liege ; University of Liege ; University of Liege ; 41731068 ; 41731068 ; 41731068 ; 41731068 ; 41525016 ; 41525016 ; 41525016 ; 41525016 ; 41474155 ; 41474155 ; 41474155 ; 41474155 ; 41474139 ; 41474139 ; 41474139 ; 41474139 ; 41661164034 ; 41661164034 ; 41661164034 ; 41661164034 ; 41274167) ; 41274167) ; 41274167) ; 41274167) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; European Union ; European Union ; European Union ; European Union ; University of Liege ; University of Liege ; University of Liege ; University of Liege ; 41731068 ; 41731068 ; 41731068 ; 41731068 ; 41525016 ; 41525016 ; 41525016 ; 41525016 ; 41474155 ; 41474155 ; 41474155 ; 41474155 ; 41474139 ; 41474139 ; 41474139 ; 41474139 ; 41661164034 ; 41661164034 ; 41661164034 ; 41661164034 ; 41274167) ; 41274167) ; 41274167) ; 41274167) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; European Union ; European Union ; European Union ; European Union ; University of Liege ; University of Liege ; University of Liege ; University of Liege ; 41731068 ; 41731068 ; 41731068 ; 41731068 ; 41525016 ; 41525016 ; 41525016 ; 41525016 ; 41474155 ; 41474155 ; 41474155 ; 41474155 ; 41474139 ; 41474139 ; 41474139 ; 41474139 ; 41661164034 ; 41661164034 ; 41661164034 ; 41661164034 ; 41274167) ; 41274167) ; 41274167) ; 41274167) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; NASA(NAS5-02099) ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Ministry for Economy and Technology ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; German Center for Aviation and Space (DLR)(50 OC 0302) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; National Postdoctoral Program for Innovative Talents(BX201600158) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; China Postdoctoral Science Foundation(2016M600124) ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; National Natural Science Foundation of China(41704163 ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; European Union ; European Union ; European Union ; European Union ; University of Liege ; University of Liege ; University of Liege ; University of Liege ; 41731068 ; 41731068 ; 41731068 ; 41731068 ; 41525016 ; 41525016 ; 41525016 ; 41525016 ; 41474155 ; 41474155 ; 41474155 ; 41474155 ; 41474139 ; 41474139 ; 41474139 ; 41474139 ; 41661164034 ; 41661164034 ; 41661164034 ; 41661164034 ; 41274167) ; 41274167) ; 41274167) ; 41274167)
源URL[http://ir.iggcas.ac.cn/handle/132A11/82573]  
专题中国科学院地质与地球物理研究所
通讯作者Sun, W. J.
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
3.Peking Univ, Sch Earth & Space Sci, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
5.Univ Liege, STAR Inst, Lab Phys Atmospher & Planetaire, Liege, Belgium
6.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA
7.Shandong Univ, Sch Space Sci & Phys, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai, Peoples R China
推荐引用方式
GB/T 7714
Sun, W. J.,Fu, S. Y.,Wei, Y.,et al. Plasma Sheet Pressure Variations in the Near-Earth Magnetotail During Substorm Growth Phase: THEMIS Observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2017,122(12):12212-12228.
APA Sun, W. J..,Fu, S. Y..,Wei, Y..,Yao, Z. H..,Rong, Z. J..,...&Shen, X. C..(2017).Plasma Sheet Pressure Variations in the Near-Earth Magnetotail During Substorm Growth Phase: THEMIS Observations.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,122(12),12212-12228.
MLA Sun, W. J.,et al."Plasma Sheet Pressure Variations in the Near-Earth Magnetotail During Substorm Growth Phase: THEMIS Observations".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 122.12(2017):12212-12228.

入库方式: OAI收割

来源:地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。