Wave Spectra and Wave-Wave Interactions in the Auroral Acceleration Region

为了了解来自地球磁层的粒子在地球大气层中的相互作用，观测和理论研究都很重要。主要发生在两极的极光是这种相互作用的表现，需要对产生极光的机制进行理论上的考虑。该项目研究了影响晚间极光加速区粒子能量和分布的各种波-波相互作用。数值模拟和解析计算将被用来研究相干和非相干三波衰变的波模之间的能量传递。这项研究的结果将增加对极光地区与这些波的激发有关的等离子体物种的温度、漂移和密度的理解。//

In order to understand the interaction of the particles from the magnetosphere of the earth in the terrestrial atmosphere both observations and theoretical studies are important. The aurora that occurs primarily at the poles is a manifestation of that interaction and theoretical considerations on the mechanisms that produce the aurora are required. This project deals with various wave-wave interactions that affect the particle energy and distribution in the evening auroral acceleration region. Numerical modeling and analytic calculations will be used to investigate the energy transfer between wave modes by coherent and incoherent three-wave decay. The results of this study will increase the understanding of plasma species temperatures, drifts and densities related to the excitation of those waves in the auroral region. //