论文标题
循环电流环的起源，进化和启示
Genesis, evolution, and apocalypse of Loop Current rings
论文作者
论文摘要
我们通过应用三个目标（即与观察者无关的）相干旋转涡流检测方法对墨西哥湾的环流涡流（所谓的环，所谓的环）进行评估。这些方法揭示了具有承受拉伸或扩散的边界的材料涡旋，或者其流体元素均匀旋转。这涉及一项技术进步，该技术可以稳健而精确地实现涡旋创世纪和启示录。我们发现，尽管进行了评估，但拉伸和扩散会产生一致的结果，这表明了欧拉（Eulerian）评估的巨大差异，这些评估与区域的涡度识别为瞬间充满了SSH场的流线。发现基于涡度的均匀旋转评估被发现非常不稳定，这表明预期寿命比所有其他评估所产生的寿命要短得多。
We carry out assessments of the life cycle of Loop Current vortices, so-called rings, in the Gulf of Mexico by applying three objective (i.e., observer-independent) coherent Lagrangian vortex detection methods on velocities derived from satellite altimetry measurements of sea-surface height (SSH). The methods reveal material vortices with boundaries that withstand stretching or diffusion, or whose fluid elements rotate evenly. This involved a technology advance that enables framing vortex genesis and apocalypse robustly and with precision. We find that the stretching- and diffusion-withstanding assessments produce consistent results, which show large discrepancies with Eulerian assessments that identify vortices with regions instantaneously filled with streamlines of the SSH field. The even-rotation assessment, which is vorticity-based, is found to be quite unstable, suggesting life expectancies much shorter than those produced by all other assessments.
