论文标题
1910年至1937年，使用EBRO目录中的数据，黑子和太阳能水龙头的N-S不对称性中的环状行为
The cyclic behaviour in the N-S asymmetry of sunspots and solar plages for the period 1910 to 1937 using data from Ebro catalogues
论文作者
论文摘要
EBRO天文台在1910 - 1937年发表的Heliophysics目录已转换为数字格式，以提供计算处理的数据。这使我们能够详细研究那个时期太阳能活动的南北（N-S）不对称，重点是位于太阳大气的两个不同层的两个不同的结构：日光点（Photosphere）和太阳份（染色体）。根据其每月发生的事件总和和区域来检查绝对和归一化的N-S不对称指数，使得在太阳能活动中发现循环行为，在该活动中，首选半球在全球周期为7.9 $ \ pm $ 0.2 yr的全球周期中系统地变化。为了准确验证和量化此周期性并在时间上研究其患病率，我们在1874---2016期间采用了RGO-USAF/NOAA Sunspot数据系列。然后，我们通过不同的技术来检查每个绝对不对称索引时间序列，作为功率谱分析，具有自适应噪声算法的完整集合经验模式分解或Morlet小波的变换。 The combined results reveal a cyclic behaviour at different time scales, consisting in two quite stable periodicities of 1.47 $\pm$ 0.02 yr and 3.83 $\pm$ 0.06 yr, which coexist with another three discontinuous components with more marked time-varying periods with means of 5.4 $\pm$ 0.2 yr, 9.0 $\pm$ 0.2 yr, and 12.7 $\pm$ 0.3年。此外，在1910--1937期间，只有两个主流信号为4.10 $ \ pm $ 0.04 $ 0.04 yr和7.57 $ \ pm $ 0.03年，可以清楚地观察到。最后，在这两个信号中，与黑子相比，杂质的时期略长。
The heliophysics catalogues published by the Ebro Observatory during 1910--1937 have been converted into a digital format in order to provide the data for computational processing. This has allowed us to study in detail the North-South (N-S) asymmetry of solar activity in that period, focusing on two different structures located at two different layers of the solar atmosphere: sunspots (Photosphere) and solar plages (Chromosphere). The examination of the absolute and normalised N-S asymmetry indices in terms of their monthly sum of occurrences and areas has made possible to find out a cyclic behaviour in the solar activity, in which the preferred hemisphere changes systematically with a global period of 7.9 $\pm$ 0.2 yr. In order to verify and quantify accurately this periodicity and study its prevalence in time, we employed the RGO-USAF/NOAA sunspot data series during 1874--2016. Then, we examined each absolute asymmetry index time series through different techniques as the power spectrum analysis, the Complete Ensemble Empirical Mode Decomposition With Adaptive Noise algorithm, or the Morlet wavelet transform. The combined results reveal a cyclic behaviour at different time scales, consisting in two quite stable periodicities of 1.47 $\pm$ 0.02 yr and 3.83 $\pm$ 0.06 yr, which coexist with another three discontinuous components with more marked time-varying periods with means of 5.4 $\pm$ 0.2 yr, 9.0 $\pm$ 0.2 yr, and 12.7 $\pm$ 0.3 yr. Moreover, during 1910--1937, only two dominant signals with averaged periods of 4.10 $\pm$ 0.04 yr and 7.57 $\pm$ 0.03 yr can be clearly observed. Finally, in both signals, periods are slightly longer for plages in comparison with sunspots.
