The interaction of magnetic fields and convection is investigated in the context of the coronal heating problem. We study the motions of photospheric magnetic elements using filtergrams obtained at the Swedish Vacuum Solar Telescope at La Palma. We use potential-field modeling to extrapolate the magnetic and velocity fields to larger height. We find that the velocity in the chromosphere can be locally enhanced at the separatrix surfaces between neighboring flux tubes. The predicted velocities are several km/s, significantly larger than those of the photospheric flux tubes, which may have important implications for coronal heating. s
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机译：在日冕加热问题的背景下研究了磁场和对流的相互作用。我们使用从拉帕尔玛岛的瑞典真空太阳望远镜获得的滤镜来研究光层磁性元素的运动。我们使用势场建模将磁场和速度场外推到更大的高度。我们发现在色散层中的速度可以在相邻通量管之间的分离线表面处局部增强。预测的速度为几公里/秒，远大于光球通量管的速度，这可能对日冕加热有重要影响。 s
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