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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >The Centennial Gleissberg Cycle and its association with extendedminima
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The Centennial Gleissberg Cycle and its association with extendedminima

机译：百周年Gleissberg周期及其与extendedminima

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The recent extended minimum of solar and geomagnetic variability (XSM) mirrors the XSMs in the nineteenth and twentieth centuries: 1810–1830 and 1900–1910. Such extended minima also were evident in aurorae reported from 450 A.D. to 1450 A.D. This paper argues that these minima are consistent with minima of the Centennial Gleissberg Cycles (CGCs), a 90–100 year variation observed on the Sun, in the solar wind, at the Earth, and throughout the heliosphere. The occurrence of the recent XSM is consistent with the existence of the CGC as a quasiperiodic variation of the solar dynamo. Evidence of CGCs is provided by the multicentury sunspot record, by the almost 150 year record of indexes of geomagnetic activity (1868 to present), by 1000 years of observations of aurorae (from 450 to 1450 A.D.) and millennial records of radionuclides in ice cores. The aa index of geomagnetic activity carries information about the two components of the solar magnetic field (toroidal and poloidal), one driven by flares and coronal mass ejections (related to the toroidal field) and the other driven by corotating interaction regions in the solar wind (related to the poloidal field). These two components systematically vary in their intensity and relative phase giving us information about centennial changes of the sources of solar dynamo during the recent CGC over the last century. The dipole and quadrupole modes of the solar magnetic field changed in relative amplitude and phase; the quadrupole mode became more important as the XSM was approached. Some implications for the solar dynamo theory are discussed.
机译：最近至少太阳能和扩展地磁变化(XSM) XSMs的镜子十九世纪和二十世纪:1810 - 1830和1900 - 1910。在极光报道从公元450年到1450年公元本文认为这些最小值符合最小值的纪念Gleissberg周期(公司治理文化),90 - 100年变异观察太阳,在太阳风地球,在日球层。最近出现的XSM是一致的作为一个准周期的公司治理文化的存在变化的太阳能发电机。由multicentury提供太阳黑子记录,由近150年记录的索引地磁活动(1868年至今),到1000年年的极光观测(从450年到公元1450年),千禧年的记录放射性核素在冰核。地磁活动信息太阳磁场的两个组件(环形和极向),一个由耀斑和驱动的日冕物质抛射(环形有关字段),另由共转太阳风相互作用的地区(有关极向场)。系统的强度和各不相同相对相位信息太阳能发电机的百周年变化的来源在最近的公司治理文化在过去的世纪。太阳磁偶极子和四极模式的场的变化相对振幅和相位;四极模式变得更加重要XSM接洽。太阳能发电机理论进行了讨论。

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