THE LF SKY-WAVE EFFECTS CAUSED BY SOLAR X-RAY FLARES
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摘要: 本文根据武昌电离层观象台的LF天波的SPA观测记录,分析了SPA效应的一些统计特性;从理论上对X射线的流量和LF天波的SPA效应之间的定量关系作了进一步研究,并根据LF天波的反射特性和标准大气模式计算了不同季节、不同太阳天顶角、上、下午不同时间的SPA效应的特性,发现SPA效应除具有季节差别外,还有上、下午的不对称性、同时揭示了SPA效应与X射线的对数流量之间的关系呈非线性相关.理论结果与实验结果相比较,两者很好地吻合.Abstract: In this paper, 761 events of LFsky-wave sudden phase anomaly (SPA) during solar flares observed at Wuchang Ionospheric Observatory (30°32'40.6"N, 114°21'21.32"E) are analysed. The characteristic of SPAand a quentitative relation between X-ray fluxes and SPAphenomena of LFsky-wave are further investigated. It is pointed out that SPAduring solar flares varies with season and is asymmetric about noon. It is shown that the relation between the SPAand the X-ray logarithmic flux is non-linear. Theoretical results agree with experimental ones.
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