NDLI: The relation between amplitudes of a global-mode Pc 5 pulsations and geosynchronous electron fluxes

Content Provider	IEEE Xplore Digital Library
Author	Suliman, M.E.Y. Yoshikawa, A. Yumoto, K. Kawano, H. Uozumi, T. Abe, S. Cardinal, M.G. Palangio, P. Kaisan, L.
Copyright Year	2013
Description	Author affiliation: Dept. of Earth & Planetary Sci., Kyushu Univ., Fukuoka, Japan (Suliman, M.E.Y.; Yoshikawa, A.; Yumoto, K.; Kawano, H.) \|\| Int. Center for Space Weather Sci. & Educ. (ICSWSE), Kyushu Univ. Fukuoka, Fukuoka, Japan (Uozumi, T.; Abe, S.; Cardinal, M.G.) \|\| Pacific Tsunami Warning Center, Pacific Tsunami Warning Center (PTWC), Ewa Beach, HI, USA (Kaisan, L.) \|\| Oss. di L'Aquila, Ist. Naz. di Geofisica e Vulcanologia, L'Aquila, Italy (Palangio, P.)
Abstract	Associative relationship between magnetospheric ULF waves in the Pc 5 range (1.7-6.7 mHz) and high energetic particles on the geosynchronous orbit has been investigated in detail in past studies. In particular, there has been interest in the efficiency of global Pc 5 waves, i.e., those having small m-numbers, in accelerating particles [1]. In this paper we investigated this feature by using energetic electron fluxes at geosynchronous orbits, and by using low-latitude global-mode Pc 5 pulsations: We used superposed epoch analyses to show correlations. In more detail, we have identified the global-mode Pc 5 geomagnetic pulsations as large-amplitude Pc 5's simultaneously observed at three low-latitude ground stations belonging to the Magnetic Data Acquisition System (MAGDAS), selected from different sectors of the globe (i.e., Europe-Africa, Japan and America sectors). The specific selection criteria of the global mode of Pc 5 pulsation are as follows: Each Pc 5 event at each station must have amplitudes larger than 0.4 nT, and life periods longer than two hours: Such criteria are relatively strict compared with past studies, but are suitable for continuous monitoring of Pc 5 pulsations. We found positive correlation between the low-latitude ground global-mode Pc 5 amplitudes and the geosynchronous energetic (E>0.6 MeV) electron flux, and found that the electron flux enhancement followed the Pc 5 amplitude enhancement; this is consistent with past studies. It is significant to compare this low-latitude global mode with low-latitude local-mode Pc 5 pulsations: This is the next subject for our ongoing research.
Starting Page	150
Ending Page	155
File Size	1151028
Page Count	6
File Format	PDF
ISBN	9781467352338
ISSN	2165431X
DOI	10.1109/IconSpace.2013.6599453
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-01
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pc5-ground observations Magnetic flux Correlation Wind speed Magnetic separation Global Pc 5 pulsations Orbits ULF Pc 5 pulsations and energetic electrons Magnetosphere Oscillators
Content Type	Text
Resource Type	Article

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