Airglow observations over the equatorial ionization anomaly zone in Taiwan

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题名:	Airglow observations over the equatorial ionization anomaly zone in Taiwan
作者:	Liu,JY;Rajesh,PK;Lee,IT;Chow,TC
贡献者:	太空科學研究所
关键词:	TRAVELING IONOSPHERIC DISTURBANCES;RAYLEIGH-TAYLOR INSTABILITY;630 NM AIRGLOW;SPREAD-F;PLASMA DEPLETIONS;IMAGING OBSERVATIONS;SEASONAL-VARIATIONS;RADAR OBSERVATIONS;BUBBLES;HALEAKALA
日期:	2011
上传时间:	2012-03-27 17:31:34 (UTC+8)
出版者:	國立中央大學
摘要:	Airglow imaging at mid-latitude stations often show intensity modulations associated with medium scale travelling ionospheric disturbances (MSTID), while those carried out near the equatorial regions reveal depletions caused by equatorial plasma bubbles (EPB). Two all sky cameras are used to observe plasma depletions in the 630.0 nm emission over the equatorial ionization anomaly (EIA) region, Taiwan (23 degrees N, 121 degrees E; 13.5 degrees N Magnetic) during 1998-2002 and 2006-2007. The results show EPB and MSTID depletions in different solar activity conditions. Several new features of the EPB depletions such as bifurcation, secondary structure on the walls, westward tilt, etc., are discussed in this paper. Evidence of tilted depletions with secondary structures developing on the eastern wall that later evolve to appear as bifurcations, are presented for the first time. Moreover, detail investigations are carried out using International Reference Ionosphere (IRI) model as well as the electron density from Ionosonde and Global Positioning System (GPS) Occultation Experiment (GOX) onboard FORMOSAT-3/COSMIC satellite, to understand the conditions that favor the propagation of MSTID to the latitude of Taiwan.
關聯:	ANNALES GEOPHYSICAE
显示于类别:	[太空科學研究所 ] 期刊論文

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