Generation of long-period regular pulsations in the magnetosphere during SC |
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| Authors: | V K Roldugin Yu P Maltsev A A Ostapenko A V Roldugin |
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| Institution: | (1) Polar Geophysical Institute, Kola Scientific Center, Russian Academy of Sciences, ul. Fersmana 14, Apatity, Murmansk oblast, 184209, Russia |
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| Abstract: | Pulsations in the electron fluxes and magnetic field on two geosynchronous satellites and at several ground-based observatories have been studied. Relativistic electron flux pulsations with a period of 6 min originated after the shock arrival from the solar wind at 0258 UT on February 11, 2000, had a regular character, and propagated from the dayside to the nightside at a velocity of about 60 deg min?1. Magnetic field oscillations on the satellites and on the Earth had a more complicated structure. Field oscillations morphologically similar to electron oscillations are observed only on one satellite in one component and at one-two ground-based stations, where a periodicity of 10–12 min was mainly observed. It is assumed that magnetic pulsations are Alfvén resonances generated by a fast magnetosonic wave. |
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