论文标题
使用模式耦合分析对太阳的近表面流进行成像
Imaging the Sun's near-surface flows using mode-coupling analysis
论文作者
论文摘要
正常模式耦合的技术是一种强大的工具，可以在太阳中对地震形象形象非轴对称现象。在这里，我们在笛卡尔近似中应用模式耦合，以在太阳中探测稳定的近表面流。使用从船上的Helioseis震动和磁成像器获得的多普勒立方体，我们对模式耦合测量测量进行反转，以表明在超晶状长度尺度（$ \ sim $ 30毫米）上所产生的差异和径向涡度图（$ 30 mm）与使用局部correlation correlation correlelation corneration corneration corneration corneration corneration相比。我们发现Divergence流的Pearson相关系数为$ \ geq $ 0.9，而GEQ $ \ geq $ 0.8则用于径向涡度。
The technique of normal-mode coupling is a powerful tool with which to seismically image non-axisymmetric phenomena in the Sun. Here we apply mode coupling in the Cartesian approximation to probe steady, near-surface flows in the Sun. Using Doppler cubes obtained from the Helioseismic and Magnetic Imager onboard the Solar Dynamics Observatory, we perform inversions on mode-coupling measurements to show that the resulting divergence and radial vorticity maps at supergranular length scales ($\sim$30 Mm) near the surface compare extremely well with those obtained using the Local Correlation Tracking method. We find that the Pearson correlation coefficient is $\geq$ 0.9 for divergence flows, while $\geq$ 0.8 is obtained for the radial vorticity.
