sunspot cycle

The Sun is not considered a variable star , but it does undergo periodic changes in activity known as the sunspot cycle .

太阳是不被认为是变星，但它的变化进行定期的活动被称为太阳黑子周期。

Further analyses show the variation of earth rotation rate and sunspot cycle length have important role on the climate abrupt change in the Qinghai-Xizang Plateau .

进一步分析表明，地球自转速度和太阳黑子周期长度的变化对高原及北半球本世纪气候的突变和阶段性变化起着重要的作用。

The response of sea - level pressure to the sunspot cycle for last one hundred years

北半球海平面气压对太阳黑子11年周期的响应

A cause for the morphology of the sunspot cycle (ⅰ)

太阳黑子周形态的由来（Ⅰ）

The surface heating fields over QXP die down when sunspot cycle length ( SCL ) become long ( the sun activity die down ) .

太阳黑子周期长度（SCL）变长（太阳活动减弱）时，青藏高原地面加热场强度减弱。

When the belt is turning " fast ," it means that lots of magnetic fields are being swept up , and that a future sunspot cycle is going to be intense .

当带正在转向“快”，这意味着大量的磁场正在扫地，而且未来的太阳黑子周期将是激烈的。

The lag ratio of cosmos earth system field ( 18 % ~ 27 % ) calculated through sunspot cycle is one of the parameters which can be used to calculate the time and period of the SL and MF type lag .

应用太阳黑子活动周期计算的宇地系统场的滞后率（18%～27%）可以作为推算SL型和MF型滞后时间量和周期的参数。

We Summarize the theoretical studies of long-term solar activity on sunspot cycle , extended cycle , the prediction of solar activity and the asymmetric distribution of solar activity on the hemisphere and present the results of our studies on the long-term solar activity .

本文综述了太阳活动周期、太阳活动延伸周、太阳活动预报和太阳活动在日面上分布等有关太阳长期活动规律的理论研究；

A quasi - periodic wave length about 2.1-2.8 ka was found with Δ 14C recorder since 15 ka BP and with the sunspot cycle length ( SCL ) over past 2600 years . They are identical in climate wave of cold and warm over the global .

利用1.5万年来的Δ14C记录和2600年来的太阳黑子周期长度（SCL）资料，发现太阳活动存在时间尺度为2.1～2.8ka的准周期波动，它们与全球气候的冷暖波动非常吻合。

A Discussion on the Cause of Formation of the Sunspot Activity Cycle

太阳黑子活动周期成因探讨

The sunspot number of Cycle 21 attained its peak 165.3 at 1979.9 . To judge on various prediction results of Cycle 21 , the criterion 165.3 ± 16.5 and 1979 ± 0.5 year are suggested .

第21周的太阳黑子数于1979.9（1979年12月）到达它的峰值165.3。本文提出用165.3±16.5和1979.9±0.5年的容许变幅，来检验第21周多种多样的预测结果。

A statistical prediction of maximum value of sunspot numbers in 23rd cycle

第23周太阳黑子相对数峰值的统计预报

Sunspot theory of business cycle

经济周期太阳黑子影响论

The next epizootic of plague in this areas will be able to occur in period of 2000 ~ 2002 of 21 century based on the forecast results of international sunspot activity of solar cycle 22 .

参考国际太阳活动22黑子周的预报结果，该地区下一次动物鼠疫大流行可能出现在21世纪初的2000～2002年间。