Theory and Simulations of Type II Irregularities in the Equatorial Electrojet

研究人员已经证明，梯度漂移不稳定的非线性演化是白天赤道电喷流中第二类不规则的主要特征。他们现在正在对白天和晚上的结构进行全面的研究计划。具体而言，研究人员将：(1)彻底探索线性不稳定谱，并产生由这些不稳定性导致的二维湍流；(2)利用所测得的密度和电场分布；(3)澄清短波不稳定性在存在主要千米级结构时的作用；以及(4)将观测的几个关键方面与Jicamara获得的高分辨率、全多普勒谱的电子速度进行比较。

Investigators have demonstrated the nonlinear evolution of gradient-drift instabilities account for principal features of type-II irregularities in the daytime equatorial electrojet. They are now conducting a comprehensive research program for structures in both daytime and nighttime. Specifically, investigators are: (1) thoroughly exploring the linear instability spectrum, and resulting two dimensional turbulence resulting from these instabilities nonlinear growth; (2) using measured density and electric field profiles; (3) clarifying the role of short-wavelength instabilities in the presence of dominant kilometer-scale structures; and (4) comparing several key aspects of observations with the high-resolution, full Doppler spectra of electron velocities obtained from Jicamarca.