论文标题
太阳风高速流的性质和地理效果和太阳周期期间23和24期间的溪流相互作用区域
Properties and geoeffectiveness of solar wind high-speed streams and stream interaction regions during solar cycles 23 and 24
论文作者
论文摘要
我们研究了从冠状孔中发出的太阳风高速流（HSSS）的特性和地理效果，并与流相互作用区域（SIRS）相关。本文介绍了588个SIR/HSS事件的统计研究，在1995年至2017年期间，太阳能速度在1 AU时超过500 km/s的统计研究，涵盖了太阳周期22的下降至周期24的下降。使用太阳能风速的测量结果检测到事件24的下降。通过与现有的ICME列表进行比较，可以删除被误认为是被误认为是与星际冠状动脉质量弹出（ICME）相互作用的事件。使用此SIR/HSS事件目录（补充材料中给出的列表），对关键太阳风参数进行了超封闭的时期分析。发现在太阳周期后期下降阶段（SC）23阶段的SIR/HSSS峰值，其速度也是如此，但是它们在AE和Sym-H指数方面的地理表面峰值很低。这可以通过在延长的太阳能最小值期间异常低的磁场值来解释。在SC23和SC24中，SIR/HSSS的最高地理效果发生在早期下降的阶段。在SC24期间，SIR/HSSS的地理效果比SC23的地理位置低至40％，这可以通过太阳能风格来解释。
We study the properties and geoeffectiveness of solar wind high-speed streams (HSSs) emanating from coronal holes and associated with stream interaction regions (SIRs). This paper presents a statistical study of 588 SIR/HSS events with solar wind speed at 1 AU exceeding 500 km/s during 1995-2017, encompassing the decline of solar cycle 22 to the decline of cycle 24. Events are detected using measurements of the solar wind speed and the interplanetary magnetic field (IMF). Events misidentified as or interacting with interplanetary coronal mass ejections (ICMEs) are removed by comparison with an existing ICME list. Using this SIR/HSS event catalog (list given in the supplementary material), a superposed epoch analysis of key solar wind parameters is carried out. It is found that the number of SIR/HSSs peaks during the late declining phase of solar cycle (SC) 23, as does their velocity, but that their geoeffectiveness in terms of the AE and SYM-H indices is low. This can be explained by the anomalously low values of magnetic field during the extended solar minimum. Within SC23 and SC24, the highest geoeffectiveness of SIR/HSSs takes place during the early declining phases. Geoeffectiveness of SIR/HSSs continues to be up to 40% lower during SC24 than SC23, which can be explained by the solar wind properties.
