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Intermittency of magnetospheric dynamics through non-Gaussian distribution function of PC-index fluctuationsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 апреля 2015 г.
- Авторы: Stepanova M.V., Antonova E.E., Troshichev O.
- Журнал: Geophysical Research Letters
- Том: 30
- Номер: 3
- Год издания: 2003
- Издательство: American Geophysical Union
- Местоположение издательства: United States
- Первая страница: 27
- Последняя страница: 1
- DOI: 10.1029/2002GL016070
- Аннотация: Dynamical behavior of the one minute resolution Polar Cap (PC) index was studied by using the 1995-2000 data sets. It was found that the probability distribution functions (PDFs) of the PC-index increments display a strong non-Gaussian shape in both positive and negative time intervals, depending on the time of an increment. This indicates that PC-index is not characterized by a global time self-similarity but rather exhibits an intermittency, previously detected in solar wind and auroral electrojet index time series. The PDFs for the PC index increments are fitted by the functional form proposed by Castaing et al. [1990] to describe intermittency phenomena in an ordinary turbulent fluid flow. The parameters that characterize the PC index increments PDF are very close to those reported before for solar wind magnetic field probability distribution functions. This indicates that the PC index adequately reflects the solar wind effects on the high-latitude magnetosphere.
- Добавил в систему: Антонова Елизавета Евгеньевна