中文摘要：

二维(2-D ) 并且三维(3-D ) 混合模拟从快模式为模式变换被执行有压缩性向运动 Alfv 挠汯楬楳湯敬獳洠条敮楴? 敲潣湮 ' 虡 N 湯 ? 慨 ? 敢湥猠畴楤摥映牯洠牯 ? 桴湡 ?‵敹牡 s 招手

英文摘要：

Two-dimensional （2-D） and three-dimensional （3-D） hybrid simulations are carried out for mode conversion from fast mode com- pressional wave to kinetic Alfv6n waves （KAWs） at the inhomogeneous magnetopause boundary. For cases in which the incident fast wave propagates in the xz plane, with the magnetopause normal along x and the background magnetic field pointing along z, the 2-D （xz） simulation shows that KAWs with large wave number kxpi - 1 are generated near the Alfv6n resonance surface, where Pi is the ion Larmor radius. Several nonlinear wave properties are manifest in the mode conversion process. Harmonics of the driver frequency are generated. As a result of nonlinear wave interaction, the mode conversion region and its spectral width are broadened. In the 3-D simulation, after this first stage of the mode conversion to KAWs with large kx, a subsequent generation of KAW modes of finite ky is observed in the later stage, through a nonlinear parametric decay process. Since the nonlinear cascade to ky can lead to massive transport at the magnetopause, the simulation results provide an effective transport mechanism at the plasma boundaries in space as well as laboratory plasmas.