1. Global Distribution of the Solar Wind and Its Evolution during Cycles 22-24.
- Author
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Tokumaru, M., Fujiki, K., Kojima, M., Iju, T., Nakano, H., Satonaka, D., Shimoyama, T., and Hakamada, K.
- Subjects
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SOLAR wind , *SCINTILLATION spectrometry , *TERRESTRIAL heat flow , *LATITUDE ,NAGOYA University (Nagoya, Japan) - Abstract
Ground-based observations of the solar wind using interplanetary scintillation (IPS) have been regularly performed since 1980s at the Solar-Terrestrial Environment Laboratory of Nagoya University using the 327-MHz multi-station system. It has been revealed from the IPS observations that the global distribution of the solar wind is well ordered by the Sun's magnetic field. This fact suggests that the magnetic field plays an important role in the formation of the solar wind. The IPS observations evidently demonstrate that global distribution of the solar wind systematically changes with the solar activity. Recently, some peculiar aspects of the solar wind have been found from the IPS observations; e.g. increase of low-latitude fast winds, global reduction of the fast wind area and the density fluctuation level, North-South asymmetry of polar fast winds. These are considered as a manifestation of weaker dynamo activity in this cycle. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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