Bibliography



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Found 2 entries in the Bibliography.


Showing entries from 1 through 2


2013

The day-to-day longitudinal variability of the global ionospheric density distribution at low latitudes during low solar activity

One important characteristic of longitudinal variability of the ionosphere is the global wavenumber-4 signature. Recent investigations have focused mainly on the climatological pattern during daytime and evening sectors. We investigate the day-to-day variability of the wavenumber-4 structure of the longitudinal ionospheric density distribution using the global total electron content (TEC) measurements from Global Positioning Systems receivers on the ground. The quiet time (Kp <= 3) day-to-day occurrence of the wavenumber-4 is obtained during periods of low solar flux conditions for the years 2008 and 2009. We find that the wavenumber-4 structure occurs at all local time sectors; however, the daytime TEC wavenumber-4 structures are clearer and can persist until the midnight hours. The most significant occurrence is observed during the 1000\textendash2400 LT sector while the minimum number of wavenumber-4 structure is observed between the 0400 and 0600 LT sector. Around the nighttime sector, more wavenumber-4 occurrence is observed during the premidnight sector than the postmidnight hours. The seasonal occurrence probability of the wavenumber-4 pattern is at a maximum during the March\textendashApril equinox and June\textendashJuly solstice. December\textendashJanuary is the period when the wavenumber-4 occurrence is less dominant than the rest of the year.

Pacheco, E.; Yizengaw, E.;

Published by: Journal of Geophysical Research: Space Physics      Published on: 04/2013

YEAR: 2013     DOI: 10.1002/jgra.50241

day-to-day; Ionosphere; longitudinal variability; TEC; wavenumber-4

2010

Quiet time meridional (vertical) ion drifts at low and middle latitudes observed by ROCSAT-1

Pacheco, E.; Heelis, R.; Su, S.-Y.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2010

YEAR: 2010     DOI: 10.1029/2009JA015108



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