中国物理B ›› 2006, Vol. 15 ›› Issue (10): 2458-2464.doi: 10.1088/1009-1963/15/10/045

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Effect of change in large and fast solar wind dynamic pressure on geosynchronous magnetic field

Borodkova N L1, Zastenker G N1, Eiges P E1, 刘静波2, 黄朝晖2, 王　赤2   

  1. (1)Space Research Institute, Moscow, Russia; (2)State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences,Beijing 10080, China
  • 收稿日期:2006-04-02 修回日期:2006-06-05 出版日期:2006-10-20 发布日期:2006-10-20
  • 基金资助:
    Project supported by the Russian Foundation for Basic Researches (Grant Nos 04-02-16152 and 04-02-39004), the International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union (Grant Nos

Effect of change in large and fast solar wind dynamic pressure on geosynchronous magnetic field

Borodkova N La), Liu Jing-Bo(刘静波)b), Huang Zhao-Hui(黄朝晖)b)†, Zastenker G Na), Wang Chi(王赤)b), and Eiges P Ea)   

  1. a Space Research Institute, Moscow, Russia; b State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences,Beijing 100080, China
  • Received:2006-04-02 Revised:2006-06-05 Online:2006-10-20 Published:2006-10-20
  • Supported by:
    Project supported by the Russian Foundation for Basic Researches (Grant Nos 04-02-16152 and 04-02-39004), the International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union (Grant Nos

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摘要： We present a comparison of changes in large and sharp solar wind dynamic pressure, observed by several spacecraft, with fast disturbances in the magnetospheric magnetic field, measured by the geosynchronous satellites. More than 260 changes in solar wind pressure during the period 1996--2003 are selected for this study. Large statistics show that an increase (a decrease) in dynamic pressure always results in an increase (a decrease) in the magnitude of geosynchronous magnetic field. The amplitude of response to the geomagnetic field strongly depends on the location of observer relative to the noon meridian, the value of pressure before disturbance, and the change in amplitude of pressure.

关键词: solar wind dynamic pressure changes, geosynchronous magnetic field

Abstract: We present a comparison of changes in large and sharp solar wind dynamic pressure, observed by several spacecraft, with fast disturbances in the magnetospheric magnetic field, measured by the geosynchronous satellites. More than 260 changes in solar wind pressure during the period 1996--2003 are selected for this study. Large statistics show that an increase (a decrease) in dynamic pressure always results in an increase (a decrease) in the magnitude of geosynchronous magnetic field. The amplitude of response to the geomagnetic field strongly depends on the location of observer relative to the noon meridian, the value of pressure before disturbance, and the change in amplitude of pressure.

Key words: solar wind dynamic pressure changes, geosynchronous magnetic field

中图分类号:  (Magnetosphere interactions)

  • 94.30.Va
94.30.Kq (Electric fields, field-aligned currents and current systems, and ring currents) 96.50.Bh (Interplanetary magnetic fields) 96.50.Ci (Solar wind plasma; sources of solar wind)