卫星观测结果表明动力学阿尔文波湍流广泛地存在于太阳风以及各种地球空间环境中，如磁层顶、磁尾和极光区等。湍流理论表明动力学阿尔文波湍流是阿尔文湍流的各向异性串级过程的自然产物。但是已有动力学阿尔文波湍流理论工作主要局限于讨论低频的和平衡的动力学阿尔文波湍流情况。 本项目计划结合唯象分析、谱演化模型和湍流的两点闭合理论，构建从低频延伸到离子回旋频率的动力学阿尔文波湍流模型以及非平衡的动力学阿尔文波湍流模型，着重分析湍流能谱结构和各种动力学阿尔文波阻尼机制在湍流能流耗散中的作用。 该项研究不仅可加深理解动力学阿尔文波湍流中尺度和频率同时串级的性质和非平衡湍流的串级行为，而且可将湍流耗散机制直接应用到日地空间等离子体中重要的等离子体加热和粒子加速问题上。

Satellite observations have shown that the kinetic Alfvén wave turbulence is ubiquitous in the solar wind and in the different kinds of the Earth's space environments, such as the magnetosphere, magnetotail and auroral zone. This kinetic Alfvén wave turbulence is a natural production of the anisotropic cascade process of the Alfvénic turbulence. Previous theoretic works for the kinetic Alfvén wave turbulence are mainly focus on the turbulence developed by the low-frequency and balanced Alfvén wavepackets. Based on the phenomenological analysis, spectral evolution model and two-point-closure theory, this project plans to model the kinetic Alfvén wave turbulence model for the frequency cascade from the low-frequency to high ion-cyclotron frequency and for the imbalanced turbulence case, and to study the problems of the turbulent spectral structure and the role of the damping effects of the kinetic Alfvén wave to the energy flux dissipation. The project is a significant scientific research and helpful in understanding the coexistence of the scale and frequency cascade character in the kinetic Alfvén wave turbulence and the cascade properties of the imbalanced turbulence, and in the application of the turbulent dissipation mechasnims to the problems of the plasma heating and particle acceleration in the solar-terrestrial space plasmas.