摘要
Tlatov(2007)研究认为,太阳活动和太阳磁场变化的22年周期,可能与太阳自转速度的变化有关.可是关于太阳自转速度为什么呈现出22年的变化周期,尚未见到有说服力的解释.本文通过对行星会合指数、行星系质心绕太阳系质心的运动、太阳绕太阳系质心运动以及太阳自转角动量变化的分析,发现行星系统的会合与相互背离,导致了太阳系质心与太阳质心的背离和靠近,从而引发太阳绕太阳系质心旋转角动量与太阳自转角动量的分离与叠加.由此认为,这两种角动量间的转换是太阳自转角速度呈现22年周期性变化的原因.太阳自转速度极小值对应于行星会合指数极大值;而太阳自转速度极大值对应行星会合指数极小值.其中平均11年左右为太阳自转加速期,另外11年则为太阳自转减速期.这一发现,可能为太阳活动与太阳磁场变化22年周期的成因机制的解释提供一个新的线索.
Tlatov＇s study proposed that the solar activity and the 22-year cycle o{ the change of solar magnetic field may be related to the change of sun spin velocity. However, there are no convincing explanations why the sun spin velocity exhibits a 22-year cycle. Through an analysis of the planetary synodic index the motion of the mass center of the planetary system, the sun revolving around the mass center of solar system and the change of sun rotational angular momentum, we find that the synodic and departure of planets cause the departure and rendezvous between the mass center of solar system and of the suru Consequently, it brings about the counteraction and superimposing between the sun revolving angular momentum and the sun rotational angular momentum. We propose that the shift of the two angular momentums is the reason which induces a 22yyear cycle of the sun spin velocity. The minimum of sun spin velocity is corresponding to the maximum of planetary synodic index and vice versa. In which, one about ll-year is the acceleration phase of sun rotation and the other ll-year is the deceleration phase of sun rotation. These may provide a clue for interpreting the formation mechanism of the solar activity and the 22-year magnetic period of the sun.
出处
《地球物理学进展》
CSCD
北大核心
2013年第4期1678-1683,共6页
Progress in Geophysics
基金
江苏高校优势学科建设工程项目(JS2010003)资助
