地幔对流的物理模拟实验结果表明 ,在地幔介质和温度非均匀分布的复杂条件下 ,热卷流 (地幔柱 )往往由立柱状转变为非立柱状 (含斜柱状、涡旋状等 )。在忽略科里奥利力的情况下 ,板块的下插和滞积下沉、岩石圈根的存在以及地幔介质粘度的非均匀分布等都可能构成不同形状的障碍 -导流体 ,导致地幔的涡旋运动。软流圈中的水平涡旋环带属于对数螺线型 ,环带旋转半径及线速度逐渐减小 ,最终在旋转中心处下沉 ,而旋转角速度大致保持恒定 The results of physical simulation of mantle convection show that the hot plume (mantle plume) often changes from columnar to non-columnar (inclining column, vortex, etc.) under the complex conditions of mantle medium and temperature non-uniform distribution. Ignoring the Coriolis force, the plate insertion and lag sedimentation, the existence of lithospheric roots and the non-uniform distribution of mantle medium viscosity all may form obstacles of different shapes - the diversion body, leading to the eddy of the mantle Swing motion. The horizontal vortex ring in the asthenosphere belongs to the logarithmic spiral type. The radius of rotation and the linear velocity of the annular ring gradually decrease, finally sinking at the center of rotation, while the angular velocity of rotation is approximately constant