Effect of change in large and fast solar wind dynamic pressure on geosynchronous magnetic field |
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| Authors: | N L Borodkov Liu Jing-Bo Huang Zhao-Hui G N Zastenker Wang Chi and P E Eiges |
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| Affiliation: | Space Research Institute, Moscow, Russia; State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences,Beijing 100080, China |
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| 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. |
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| Keywords: | solar wind dynamic pressure changes geosynchronous magnetic field |
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