Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa51b1228l&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SA51B-1228
Physics
[2415] Ionosphere / Equatorial Ionosphere, [2443] Ionosphere / Midlatitude Ionosphere
Scientific paper
This paper reports the structure of Equatorial ionization anomaly (EIA) in various longitudes, and seasons by means of GPS occultation experiment (GOX) observations on board the FORMOSAT-3/COSMIC during 2007-2008. The radio occultation observation also shows two remarkable electron density reductions located underneath the EIA regions so called ionospheric plasma caves. The plasma caves could last until late-evening hours, depending on the evolution of the EIA, and range from 100 up to 300 km altitude with 15° latitude width from the center of the EIA crest. The plasma cave occurs during daytime when the EIA is developed by the equatorial plasma fountain and disappear until evening hours, following the evolution of the EIA and equatorial plasma fountain. The international reference ionosphere IRI-2007 further predicts existence of the ionospheric plasma caves.
Lee Inkyu
Lin Chaney
Liu Jian-Guo
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