太阳暗条的非线性分析及周期性研究

发布时间：2018-03-06 00:11

本文选题：太阳暗条　切入点：非线性　出处：《重庆大学》2014年硕士论文　论文类型：学位论文

【摘要】：太阳活动，指的是包括太阳黑子、太阳耀斑、太阳日珥和日冕物质抛射等多种现象的统称。其中太阳黑子最为引人注目，因而被频繁研究。其物理形成机制与长期行为特征已取得较大进展。太阳黑子是太阳光球层的活动，但同时与太阳磁场密切相关。而作为其他太阳活动同样与太阳表面磁场有着密切联系，，所以与黑子之间的关系也亟待阐明。太阳暗条作为日冕层活动现象与太阳表面磁场有着重要的关联。所以它作为与黑子不同太阳大气层与黑子的长期活动的异同令人十分关心。并且通过阐明异同可以很好的帮助解释太阳黑子在暗条的形成爆发中起着什么样的作用。作为与黑子极为相关的日冕层活动，许多人认为其同样具有与黑子相似的非线性性质及其周期性。其中黑子的非线性性质已有大量的研究涉及，而太阳暗条的研究则鲜有人问津。为此我们希望通过对暗条的非线性性质及周期性进行研究，以发现其中的异同并加以解释。对此，我们进行了以下工作： 1、对从法国墨东天文台所观测到的1919年3月至1989年12月的每卡灵顿自转周太阳暗条数进行一维到多维的重构成。这种相空间重构的目的是为了将数据内部存在的动力学特征以相轨迹形式展现在高维度的相空间中已掌握其动力学特征。 2、将该数据进行关联维数的计算，用以分析出其动力学构成的复杂性和可能构成形式。关联维的计算可用于分析描述数据产生所需求的动力学描述方程参数需求。是非线性特征的非常重要的一环。并且将结果与已得到的许多黑子的结论相比较，以得出其异同及联系。 3、对于太阳暗条与黑子的相似性可看出太阳暗条很可能具有如同黑子一般的混沌特征。对此对暗条的K2熵进行计算，以确定其在系统随时间变化而产生的不确定度的增长速度，同时也是确定其系统的复杂度。 4、太阳黑子具有众所周知的极强的周期性，尤其以11年太阳活动周最为著名。其中对暗条的研究也表明暗条既有可能存在相似的周期性特征。并且，暗条的11年周期也被许多研究所证实。然而部分研究表明，太阳黑子暨太阳其他活动指数，如太阳耀斑、F10.7cm射电辐射等，都被发现有许多小于11年活动周但十分重要的活动周期现象。在这里，本文同样将对这些小周期进行分析和挖掘。并希望通过小周期上与太阳黑子的相似性及相异性来分析太阳暗条与太阳黑子和其他太阳活动指数的相关性。
[Abstract]:Solar activity refers to a variety of phenomena including sunspots, solar flares, solar prominence and coronal mass ejections. The physical formation mechanism and long-term behavior characteristics have made great progress. Sunspots are the activities of the solar photosphere. But it is also closely related to the solar magnetic field. And as other solar activity, it is also closely related to the surface magnetic field of the sun. Therefore, the relationship between sunspots and sunspots needs to be clarified urgently. The phenomenon of solar dark strip as the coronal layer activity has an important relation with the surface magnetic field of the sun. Therefore, it is different from sunspot in the long-term activity of solar atmosphere and sunspot. Of great concern. And by clarifying differences and similarities, we can help explain what role sunspots play in the formation and eruption of dark strips, as coronal layer activity that is very relevant to sunspots. Many people think that it also has the nonlinear property and its periodicity similar to that of sunspot, in which the nonlinear property of sunspot has been studied extensively. For this reason, we hope to find out the similarities and differences and explain the differences and similarities by studying the nonlinear properties and periodicity of the dark strips. For this reason, we have done the following work:. 1. The number of solar dark strips per Carrington rotation from March 1919 to December 1989 observed by the Meteon Observatory in France is reconstituted from one dimension to several dimensions. The purpose of this phase space reconstruction is to internalize the data. The dynamic characteristics have been grasped in the high dimensional phase space in the form of phase trajectories. 2, calculate the correlation dimension of the data, The calculation of the correlation dimension can be used to analyze the parameter requirements of the dynamic description equation needed to generate the description data. It is a very important link of the nonlinear characteristic. And compare the results with many of the sunspots that have been drawn, In order to obtain its similarities and differences and links. 3. For the similarity between solar dark strip and sunspot, it can be seen that solar dark strip is likely to have chaotic characteristics as sunspot. The K2 entropy of dark strip is calculated in order to determine the growth rate of uncertainty caused by its variation over time in the system. It also determines the complexity of the system. 4. Sunspots are known for their strong periodicity, especially for their 11-year solar cycles. Studies of dark strips also show that there may be similar periodicity in dark strips. The 11-year cycle of dark strips has also been confirmed by many studies. However, some studies have shown that sunspots and other indices of solar activity, such as solar flares F10.7cm radio radiation, Are found to have a number of very important activity cycles less than 11 years of activity. This paper also analyzes and excavates these small periods, and hopes to analyze the correlation between solar dark strips and sunspots and other solar activity indices through the similarity and heterogeneity between small periods and sunspots.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P182

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