LONG-TERM TRENDS IN SUNSPOT MAGNETIC FIELDS
LONG-TERM TRENDS IN SUNSPOT MAGNETIC FIELDS
复制标题
太阳黑子磁场的长期趋势
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
A. Rybak
中科院分区：
文献类型：
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作者：
A. Pevtsov;Y. Nagovitsyn;A. Tlatov;A. Rybak
最近的研究表明，太阳黑子的最大场强在过去几年中逐渐下降。通过推断这一趋势，Penn和利文斯顿提出太阳黑子可能在不久的将来完全消失。为了验证这些最新发现，我们使用了前苏联七个天文台1957年至2011年的历史天气数据集（1998年至2011年，仅在一个天文台进行了观测）。我们的研究结果表明，虽然太阳黑子磁场强度上升和减弱与太阳周期，有没有一个长期的趋势，这将表明在太阳黑子磁场逐渐减少超过四个半太阳周期所涵盖的这些观测。
Recent studies indicate that a maximum field strength in sunspots shows a gradual decrease over the last several years. By extrapolating this trend, Penn & Livingston proposed that sunspots may completely disappear in the not-so-distant future. To verify these recent findings, we employ historic synoptic data sets from seven observatories in the former USSR covering the period from 1957 to 2011 (from 1998 to 2011, observations were taken at only one observatory). Our results indicate that while sunspot field strengths rise and wane with solar cycle, there is not a long-term trend that would suggest a gradual decrease in sunspot magnetic fields over the four and a half solar cycles covered by these observations.