Bibliography



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Found 2 entries in the Bibliography.


Showing entries from 1 through 2


2013

Determining the equatorward and poleward boundaries of the auroral oval from CHAMP field-aligned currents signatures

IRI peak E-region electron density with assimilated auroral NmE from GUVI auroral model.

Xiong, Chao; Lühr, Hermann; Ritter, Patricia;

Published by:       Published on:

YEAR: 2013     DOI:

2012

Plasma irregularities in the high-latitude ionospheric F-region and their diamagnetic signatures as observed by CHAMP

Diamagnetic effects of ionospheric irregularities have been investigated at low-latitudes before, but no corresponding effort has been made at high latitudes. In this study we demonstrate clear diamagnetic signatures of high-latitude ionospheric irregularities as observed by the CHAMP satellite. We also present the climatology of these diamagnetic signatures for the years 2001\textendash2010 and compare it with a previous study based on Global Positioning System (GPS) scintillation measurements. The climatology of the diamagnetic signatures is in reasonable agreement with that of the scintillations. The occurrence rate of the ionospheric irregularities generally peaks along the auroral latitudes around the pole, but it is not uniform zonally. The occurrence rate exhibits a maximum at the dayside cusp and in the pre-midnight ionosphere. The occurrence rate increases with solar and/or auroral activity. The region of high occurrence rate expands equatorward with increasing auroral activity. Occurrence probabilities are higher in local winter than in local summer. The overall occurrence rate is smallest around June solstice and largest around December solstice. The ionospheric irregularities are generally accompanied by bursts of small-scale field-aligned currents (FACs), and they are related to Region 1 FACs.

Park, Jaeheung; Ehrlich, Robert; ühr, Hermann; Ritter, Patricia;

Published by: Journal of Geophysical Research      Published on: 10/2012

YEAR: 2012     DOI: 10.1029/2012JA018166

diamagnetic effect; high-latitude ionosphere; plasma density irregularity



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