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Changes in the ULFwave field during the precursor phase to the Sichuan earthquake: DEMETER observationsстатья
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: 17 апреля 2018 г.
- Авторы: Walker S.N., Kadirkamathan V., Pokhotelov O.A.
- Журнал: Annales Geophysicae
- Том: 31
- Год издания: 2013
- Издательство: Copernicus Gesellschaften
- Местоположение издательства: Germany
- Первая страница: 1597
- Последняя страница: 1603
- DOI: 10.5194/angeo-31-1597-2013,
- Аннотация: Electromagnetic phenomena observed in association with increases in seismic activity have been studied for several decades. These phenomena are generated during the precursory phases of an earthquake as well as during the main event. Their occurrence during the precursory phases may be used in short-term prediction of a large earthquake. In this paper, we examine ultra-low frequency (ULF) electric field data from the DEMETER satellite during the period leading up to the Sichuan earthquake. It is shown that there is an increase in ULF wave activity observed as DEMETER passes in the vicinity of the earthquake epicentre. This increase is most obvious at lower frequencies. Examination of the ULF spectra shows the possible occurrence of geomagnetic pearl pulsations, resulting from the passage of atmospheric gravity waves generated in the vicinity of the earthquake epicentre.
- Добавил в систему: Похотелов Олег Александрович