Multiscape Coupling of Sub-auroral Polarization Streams

西谷 望; 堀 智昭

講演情報

[E] 口頭発表

セッション記号 P (宇宙惑星科学) » P-EM 太陽地球系科学・宇宙電磁気学・宇宙環境

[P-EM10] Multi-scale Coupling in the Magnetosphere-Ionosphere-Thermosphere System

2019年5月27日(月) 15:30 〜 17:00 A05 (東京ベイ幕張ホール)

コンビーナ:Yue Deng(University of Texas at Arlington)、Toshi Nishimura(Boston University)、Liu Huixin(九州大学理学研究院地球惑星科学専攻九州大学宙空環境研究センター)、Yanshi Huang(Harbin Institute of Technology, Shenzhen)、座長:Yue Deng(University of Texas at Arlington)、Huixin Liu(Kyushu University, Japan)、Yanshi Huang(Harbin Institute of Technology, Shenzhen, China)、Yukitoshi Nishimura(Boston University)

16:15 〜 16:30

[PEM10-04] Multiscape Coupling of Sub-auroral Polarization Streams

*西谷望¹、堀智昭¹ (1.名古屋大学宇宙地球環境研究所)

キーワード：スケール間結合、SuperDARN北海道-陸別第一・第二レーダー、サブオーロラ帯高速プラズマ流(SAPS)

Sub-Auroral Polarization Streams (SAPS) are fast westward flows slightly equatorward of the auroral precipitation boundary, and manifestations of magnetosphere-coupling processes. Recenty it was shown that SAPS sometimes contain perturbation in westward speed, typically with temporal scale of a few minutes (e.g., Hori et al., GRL, 2018). However, it has not yet been clear how small the temporal scales of these perturbations can be and how perturbations with different temporal scales are related to each other. In this paper, multiscape coupling of the sub-auroral polarization streams will be studied, using multiple events observed mainly by the SuperDARN Hokkaido East / West radars.