基于多波段观测数据,分析2022年3月30日太阳活动区NOAA AR 12975中爆发的X1.3级耀斑。耀斑发生期间活动区出现了S型结构与明显的光斑,同时活动区里出现的白色局部斑状光亮,可以看到明显的亮度提升,白色局部斑状光亮逐渐演变为明亮的耀...基于多波段观测数据,分析2022年3月30日太阳活动区NOAA AR 12975中爆发的X1.3级耀斑。耀斑发生期间活动区出现了S型结构与明显的光斑,同时活动区里出现的白色局部斑状光亮,可以看到明显的亮度提升,白色局部斑状光亮逐渐演变为明亮的耀斑带。两条耀斑带相互接近,发生重联现象,之后形成大型拱顶结构,两端脚点的耀斑带向外拓展;到最后拱顶结构断开,南北脚点的耀斑带停止了延伸。从磁场能量的角度看,早在耀斑出现在太阳表面时,活动区的磁场活跃强度就在逐渐加剧。在不同的M级耀斑与C级耀斑事件发生后,活动区AR 12975的磁场强度不减反增,预示了接下来即将发生的大型耀斑爆发。结合多维演变图像分析,我们得出结论:活动区AR 12975可以被视为一个良好的测试对象,用来研究光球磁场活动在触发强大太阳爆发中的作用。展开更多
The short term responses of 227326 lightning activities measured with LLP80-02 to 170 solar flares of importance 2 or greater over the Beijing-Tianjin-Hebei region around the summers of 1989-1994 are studied.In the re...The short term responses of 227326 lightning activities measured with LLP80-02 to 170 solar flares of importance 2 or greater over the Beijing-Tianjin-Hebei region around the summers of 1989-1994 are studied.In the region of 600×600 km 2,these are two areas of negative responses with a significance level better than 5×10 -3 .They are the Bohai Bay and the middle west of Hebei,both with a scale of several hundred kilometers.This means that the lightning activities in these areas decrease after flares.This gives rise to a new challenge to the mechanism of the effect of solar activities on the short-middle term weather and provides a new basis for further research.展开更多
文摘基于多波段观测数据,分析2022年3月30日太阳活动区NOAA AR 12975中爆发的X1.3级耀斑。耀斑发生期间活动区出现了S型结构与明显的光斑,同时活动区里出现的白色局部斑状光亮,可以看到明显的亮度提升,白色局部斑状光亮逐渐演变为明亮的耀斑带。两条耀斑带相互接近,发生重联现象,之后形成大型拱顶结构,两端脚点的耀斑带向外拓展;到最后拱顶结构断开,南北脚点的耀斑带停止了延伸。从磁场能量的角度看,早在耀斑出现在太阳表面时,活动区的磁场活跃强度就在逐渐加剧。在不同的M级耀斑与C级耀斑事件发生后,活动区AR 12975的磁场强度不减反增,预示了接下来即将发生的大型耀斑爆发。结合多维演变图像分析,我们得出结论:活动区AR 12975可以被视为一个良好的测试对象,用来研究光球磁场活动在触发强大太阳爆发中的作用。
文摘The short term responses of 227326 lightning activities measured with LLP80-02 to 170 solar flares of importance 2 or greater over the Beijing-Tianjin-Hebei region around the summers of 1989-1994 are studied.In the region of 600×600 km 2,these are two areas of negative responses with a significance level better than 5×10 -3 .They are the Bohai Bay and the middle west of Hebei,both with a scale of several hundred kilometers.This means that the lightning activities in these areas decrease after flares.This gives rise to a new challenge to the mechanism of the effect of solar activities on the short-middle term weather and provides a new basis for further research.