dayside Pi 2 pulsations at low latitudes

Peter R. Sutcliffe, Kiyohumi Yumoto

doi:10.1029/gl016i008p00887

dayside Pi 2 pulsations at low latitudes

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書誌事項

公開日: 1989-08

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1029/gl016i008p00887

公開者: American Geophysical Union (AGU)

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説明

<jats:p>In this paper we investigate the occurrence of dayside Pi 2 geomagnetic pulsations at low and mid latitudes. The technique of data adaptive filtering is used to identify Pi 2's concealed by the presence of typical daytime Pc type pulsations. Convincing new evidence is presented demonstrating that Pi 2 pulsations occur simultaneously in both the nightside and dayside hemispheres at low latitudes. Dayside Pi 2's are occasionally identified at mid latitudes. These results have implications with regard to the source mechanism for low latitude Pi 2 pulsations and allude to a global cavity mode.</jats:p>