空间科学学报2017，Vol.37Issue(2)：140-150,11.DOI:10.11728/cjss2017.02.140
夜侧极区电离层对流对行星际激波的响应
Case Study on Nightside Polar Ionospheric Convection Response to Interplanetary Shock
摘要
Abstract
An interplanetary shock event on 14 July 2012 is studied using observations with Super Dual Aurora Radar Network (SuperDARN),northern hemispheric IMAGE magnetometer chain and All-sky Aurora Imagers at Zhongshan station,Antarctica.At 18:10UT,an interplanetary shock struck the magnetosphere and induced geomagnetic sudden commencement.Observations of SuperDARN present that the ionosphere convection of northern hemisphere was enhanced obviously.The Hankasalmi radar,whose field of view covers the Yellow River station,found that the ionospheric F layer was severely disturbed,e.g.the echoes number increased obviously and inversion phenomenon of local ionospheric convection speed emerged from 18:10 UT to 18:33 UT.There are three irregularities in F layer measured by Hankasalmi radar and their speeds in line-of-sight reached 600 m.s-1 after 18:33 UT.Kerguelen radar around Zhongshan,conjugating with the Yellow River station,observed that the number of the echoes had little change and the echoes are mainly from E layer and there are almost no echoes from F layer.However,the All-sky Imagers at Zhongshan station observed the enhancement of aurora activity.The observation difference of northern and southern hemispheres nightside ionospheric responses are mainly because of that they were at polar night and polar day respectively.关键词
行星际激波/地磁急始/SuperDARN/极区电离层对流/极光Key words
Interplanetary shock/Geomagnetic sudden commencement/SuperDARN/Polar ionospheric convection/Aurora分类
天文与地球科学引用本文复制引用
刘琼琼,胡红桥,吕建永,刘建军,刘瑞源..夜侧极区电离层对流对行星际激波的响应[J].空间科学学报,2017,37(2):140-150,11.基金项目
国家自然科学基金项目(41431072,41304149),南北极环境综合考察与评估专项(CHINARE 2015-02-03),浦东新区科技发展基金(PKC2013-207)和国家海洋局极地考察办公室对外合作支持项目(201608)共同资助 （41431072,41304149）
