Post-noon ionospheric absorption observed by the imaging riometers at polar cust/cap conjugate stations

Nishino, Masanori and Yamagishi, Hisao and Sato, Natuo and Murata, Y. and Ruiyuan, Liu and Hongqiao, Hu and Stauning, P. and Holtet, J. A. (1999) Post-noon ionospheric absorption observed by the imaging riometers at polar cust/cap conjugate stations. Advances in Polar Science, 10 (2). pp. 125-132.

PDF Download (2MB)

Abstract

An example of post-noon ionospheric absorption observed by the imaging riometers at Ny-Alesund / Danmarkshavn in the arctic region and Zhongshan Station in Antarctic is presented. The post-noon absorption observed simultaneously between the hemispherical stations was a spike-type with weak intensity (< 1 dB) during the high solar wind dynamic pressure. The absorption spikes might be caused by precipitation of high-energy electrons (30 - 300 keV) in the closed dayside magnetosphere. It should be noted that the precipitation region of the absorption spike associated with the steep pressure increase (~ 13 nPa) was localized and shifted equatorward.

Item Type:	Article
Related URLs:
Keywords:	post-noon ionospheric absorption, conjugate imaging riometer, high solar wind dynamic pressure.
Subjects:	Unspecified
Organizations:	Unspecified
Date Deposited:	27 Apr 2023 10:23
URI:	http://library.arcticportal.org/id/eprint/2184

Actions (login required)

View Item