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Peculiarities of the Heliospheric State and the Solar-Wind/Magnetosphere Coupling in the Era of Weakened Solar Activity
Universe ( IF 2.9 ) Pub Date : 2022-09-22 , DOI: 10.3390/universe8100495 Yuri I. Yermolaev, Irina G. Lodkina, Alexander A. Khokhlachev, Michael Yu. Yermolaev
Universe ( IF 2.9 ) Pub Date : 2022-09-22 , DOI: 10.3390/universe8100495 Yuri I. Yermolaev, Irina G. Lodkina, Alexander A. Khokhlachev, Michael Yu. Yermolaev
Based on the data of the solar wind (SW) measurements of the OMNI database for the period 1976–2019, we investigate the behavior of SW types, as well as plasma and interplanetary magnetic field (IMF) parameters, for 21–24 solar cycles (SCs). Our analysis shows that with the beginning of the period of low solar activity (SC 23), the number of all types of disturbed events in the interplanetary medium decreased, but the proportion of magnetic storms initiated by CIR increased. In addition, a change in the nature of SW interaction with the magnetosphere could occur due to a decrease in the density, temperature, and IMF of solar wind.
中文翻译:
太阳活动减弱时代日球层状态与太阳风/磁层耦合的特点
基于 1976-2019 年 OMNI 数据库的太阳风 (SW) 测量数据,我们研究了 21-24 个太阳周期的 SW 类型以及等离子体和行星际磁场 (IMF) 参数的行为(SC)。我们的分析表明,随着低太阳活动期(SC 23)的开始,行星际介质中各类扰动事件的数量减少,但由CIR引发的磁暴比例增加。此外,由于太阳风的密度、温度和 IMF 的降低,SW 与磁层相互作用的性质可能发生变化。
更新日期:2022-09-22
中文翻译:
太阳活动减弱时代日球层状态与太阳风/磁层耦合的特点
基于 1976-2019 年 OMNI 数据库的太阳风 (SW) 测量数据,我们研究了 21-24 个太阳周期的 SW 类型以及等离子体和行星际磁场 (IMF) 参数的行为(SC)。我们的分析表明,随着低太阳活动期(SC 23)的开始,行星际介质中各类扰动事件的数量减少,但由CIR引发的磁暴比例增加。此外,由于太阳风的密度、温度和 IMF 的降低,SW 与磁层相互作用的性质可能发生变化。