为同步拼图添加更多的碎片:QBO,双峰和相位跳跃

IF 2.4 3区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
F. Stefani, G. M. Horstmann, G. Mamatsashvili, T. Weier
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引用次数: 0

摘要

这项工作建立在最近开发的自洽同步太阳发电机模型的基础上,该模型试图解释里格型周期、施瓦贝/黑尔周期、苏斯-德弗里斯周期和格莱斯伯格周期,根据各种波现象与轨道行星施加的引力的共振。我们再次从基本概念出发,即三对潮汐占主导地位的行星金星、地球和木星的春潮在太阳速斜处激发磁罗斯比波。虽然这三个波浪之和的二次作用构成了11.07年的次级周期,但现在主要的焦点是更明显的1.723年周期的作用。我们的发电机模型提供了精确的周期振荡,这也是准两年振荡(QBO)的典型特征。最显著的是它与地面增强(GLE)事件的一致性,GLE事件优先发生在周期为1.724年的振荡正相。虽然双峰分布是太阳黑子同步的普遍特征,但在QBO的影响下表现得最为强烈。这也许可以解释为什么太阳的活动与其他类太阳恒星相比相对较弱。我们还讨论了太阳周期的异常,以及随后180度的相位跳跃。在这方面,我们注意到11.07年的周期对波浪的二次泛函的时间平均相当敏感,而且容易出现90°的相位跳跃。在此基础上,我们提出了另一种解释,即在北大西洋和霍尔兹马尔湖的藻类相关数据中观测到的5.5年阶段跳跃,迄今为止归因于最佳生长条件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Adding Further Pieces to the Synchronization Puzzle: QBO, Bimodality, and Phase Jumps

This work builds on a recently developed self-consistent synchronization model of the solar dynamo which attempts to explain Rieger-type periods, the Schwabe/Hale cycle, and the Suess-de Vries and Gleissberg cycles in terms of resonances of various wave phenomena with gravitational forces exerted by the orbiting planets. We start again from the basic concept that the spring tides of the three pairs of the tidally dominant planets Venus, Earth, and Jupiter excite magneto-Rossby waves at the solar tachocline. While the quadratic action of the sum of these three waves comprises the secondary beat period of 11.07 years, the main focus is now on the action of the even more pronounced period of 1.723 years. Our dynamo model provides oscillations with exactly that period, which is also typical for the quasi-biennial oscillation (QBO). Most remarkable is its agreement with Ground Level Enhancement (GLE) events which preferentially occur in the positive phase of an oscillation with a period of 1.724 years. While bimodality of the sunspot distribution is shown to be a general feature of synchronization, it becomes most strongly expressed under the influence of the QBO. This may explain the observation that the solar activity is relatively subdued when compared to that of other sun-like stars. We also discuss anomalies of the solar cycle, and subsequent phase jumps by 180. In this connection it is noted that the very 11.07-year beat period is rather sensitive to the time-averaging of the quadratic functional of the waves and prone to phase jumps of 90. On this basis, we propose an alternative explanation of the observed 5.5-year phase jumps in algae-related data from the North Atlantic and Lake Holzmaar that were hitherto attributed to optimal growth conditions.

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来源期刊
Solar Physics
Solar Physics 地学天文-天文与天体物理
CiteScore
5.10
自引率
17.90%
发文量
146
审稿时长
1 months
期刊介绍: Solar Physics was founded in 1967 and is the principal journal for the publication of the results of fundamental research on the Sun. The journal treats all aspects of solar physics, ranging from the internal structure of the Sun and its evolution to the outer corona and solar wind in interplanetary space. Papers on solar-terrestrial physics and on stellar research are also published when their results have a direct bearing on our understanding of the Sun.
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