电波科学学报2017，Vol.32Issue(4)：369-376,8.DOI:10.13443/j.cjors.2017062701
磁扰和磁静期间南极McMurdo地区电离层闪烁统计特征的对比分析
Statistical features of ionospheric scintillation over McMurdo, Antarctica during disturbed and quiet geomagnetic conditions:a comparative analysis
摘要
Abstract
This paper presents statistical features of the ionospheric scintillation observations over McMurdo (77.88°S,166.73°E;geomagnetic latitude 80°N),Antarctica during the period of 2011-2014.Using the occurrence rate of ionospheric phase scintillation as a function of geomagnetic latitude (MLAT) and magnetic local time (MLT) under the disturbed and quiet geomagnetic conditions respectively,we comparatively analyzed the diurnal variation of phase scintillation and its dependence on season and solar activities.We find that the phase scintillation mainly occurred near magnetic noon and near magnetic midnight during both disturbed and quiet geomagnetic conditions,but it occurred higher at disturbed geomagnetic conditions,expanding toward both poleward and equatorward geomagnetic latitude.Seasonally,the scintillation occurrence is significantly higher in spring and autumn than in summer and winter,with the highest rate during February to March,September to October and the weakest rate during June in winter,which has been obviously presented during disturbed conditions.With stronger solar activity,yearly maps of occurrence of phase scintillation show gradually increase and expand of enhanced scintillation regions.These results can help to obtain the ionospheric scintillation distribution and provide support for the ionospheric scintillation modeling and prediction,which has important application value for the communication and navigation positioning in the polar region.关键词
极区电离层/电离层闪烁/南极地区/地磁活动/统计特征Key words
polar ionosphere/ionospheric scintillation/Antarctica/geomagnetic activity/statistical characteristics分类
天文与地球科学引用本文复制引用
朱光逸,邢赞扬,张清和,王勇,曹政..磁扰和磁静期间南极McMurdo地区电离层闪烁统计特征的对比分析[J].电波科学学报,2017,32(4):369-376,8.基金项目
国家自然科学基金(No.41604139,41574138) （No.41604139,41574138）
电波环境特性及模化技术重点实验室基金(JW2016-009) （JW2016-009）
