论文标题
黑子数据的正确正交和动态模式分解
Proper Orthogonal and Dynamic Mode Decomposition of Sunspot Data
论文作者
论文摘要
高分辨率太阳观测表明，磁流失动力学（MHD）波运动的复杂结构。我们使用POD和DMD的技术来使用强度时间序列来识别太阳生物中的主要MHD波模式。 POD技术用于查找空间正交的模式，而DMD技术识别时间正交性。在这里，我们表明，组合的POD和DMD方法可以成功地识别具有大致圆形横截面形状的黑子蒙布拉（Sunspot Umbra）中的香肠和扭结模式。
High resolution solar observations show the complex structure of the magnetohydrodynamic (MHD) wave motion. We apply the techniques of POD and DMD to identify the dominant MHD wave modes in a sunspot using the intensity time series. The POD technique was used to find modes that are spatially orthogonal, whereas the DMD technique identifies temporal orthogonality. Here we show that the combined POD and DMD approaches can successfully identify both sausage and kink modes in a sunspot umbra with an approximately circular cross-sectional shape.
