标题： 1995年至2002年太阳动力学的变化 显示英文标题

标题： Changes in Solar Dynamics from 1995 to 2002

摘要： 过去七年中，通过 GONG 和 MDI 仪器获得的数据被用来研究太阳动力学（包括自转和其他大规模流动）如何随时间变化。 除了众所周知的较快和较慢旋转带向赤道和极地移动的现象外，我们还发现纬向流动模式随时间上升。 与纬向流动类似，径向流动也显示出明显的与太阳活动相关的改变。特别是径向流动的反对称分量在活动期间速度有所减小。 我们认为太阳发电机正在运行的对流区湍流层区域的动力学没有观察到任何显著的时间变化。 显示英文摘要

摘要： Data obtained by the GONG and MDI instruments over the last seven years are used to study how solar dynamics -- both rotation and other large scale flows -- have changed with time. In addition to the well known phenomenon of bands of faster and slower rotation moving towards the equator and pole, we find that the zonal flow pattern rises upwards with time. Like the zonal flows, the meridional flows also show distinct solar activity related changes. In particular, the anti-symmetric component of the meridional flow shows a decrease in speed with activity. We do not see any significant temporal variations in the dynamics of the tachocline region where the solar dynamo is believed to be operating.