Variations in the IMF vertical component in isolated solar wind streams |
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Authors: | T A Hviuzova S V Tolochkina V L Zverev |
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Institution: | (1) Polar Geophysical Institute, Kola Scientific Center, Russian Academy of Sciences, ul. Khalturina 15, Murmansk, 183101, Russia |
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Abstract: | The regularities of the variations in the IMF B z component have been studied based on the data on the solar wind streams and their solar sources. Isolated solar wind streams such as magnetic clouds and shock layers before them, undisturbed heliospheric current sheets (HCSs), leading edges and bodies of high-speed streams from coronal holes (HSSs from CHs) have been considered. It has been revealed that each type of isolated streams in the interplanetary medium has it own features in the variations in the value and direction of the B z component related to the stream immanent properties and conditions of propagation in the interplanetary plasma. The appearance of the southward B z component is obligatory for all these streams which are, therefore, geoeffective. |
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