DOI: 10.1029/2018JA025491
Scopus记录号: 2-s2.0-85052616345
论文题名: On the Solstice Maxima and Azimuth-Dependent Characteristics of the 150-km Echoes Observed Using the Equatorial Atmosphere Radar
作者: Pavan Chaitanya P. ; Patra A.K. ; Otsuka Y. ; Yokoyama T. ; Yamamoto M.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 8 起始页码: 6752
结束页码: 6759
语种: 英语
英文关键词: 150-km echoes
; Equatorial Atmosphere Radar
英文摘要: We present long overdue statistical analysis of the 150-km echoes based on 10 years of observations made using the Equatorial Atmosphere Radar located at Kototabang, Indonesia. Analysis shows that while the basic features of the echoes are very similar to those observed from other equatorial/low-latitude stations, occurrence and power/signal-to-noise ratio of the echoes are much higher in the solstices than in the equinoxes. Furthermore, both occurrence rate and power/signal-to-noise ratio of the echoes in the December solstice are marginally lower than those of the June solstice. The observed solstice-equinox asymmetry has important implications with regard to the generation mechanism of the 150-km echoes since this seasonal behavior cannot be accounted for by the recently proposed photoelectron-induced enhanced plasma wave process alone. Equatorial Atmosphere Radar observations also display remarkable azimuthal variations of the echo characteristics, which indicate magnetic aspect angle dependence of the echoes. The implications of these results are discussed in terms of the origin of the 150-km echoes. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113313
Appears in Collections: 气候减缓与适应
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作者单位: National Atmospheric Research Laboratory, Gadanki, India; Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan; National Institute of Information and Communication Technology, Tokyo, Japan; Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Japan
Recommended Citation:
Pavan Chaitanya P.,Patra A.K.,Otsuka Y.,et al. On the Solstice Maxima and Azimuth-Dependent Characteristics of the 150-km Echoes Observed Using the Equatorial Atmosphere Radar[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(8)