Effects of density, temperature and velocity gradients on inertial Alfven wave in cusp region

► Inhomogeneity of magnetosphere plays a significant role in description of auroral dynamic by KAW. ► Investigation may be useful for plasma heating processes, confinement device and space plasma. ► KAW is fundamentally important for supplementary heating of a Tokomak type plasma. ► Findings indicate that density, temperature and velocity gradients control the dynamics of KAW significantly and may be the cause of excitation of KAW in the cusp region.