Magnetosphere Response to Solar Wind Dynamic Pressure Change

The near-Earth space environment is greatly affected by transient perturbations in the solar wind. One of the most obvious and important perturbations are solar wind dynamic pressure changes, which are sometimes positive (increasing with time) and sometimes negative (decreasing with time). When they arrive at the Earth, we can see the compression of the magnetosphere after the dynamic pressure increase, and the expansion of the magnetosphere after the dynamic pressure decrease. Previous and recent work have shown that they may produce vortices, ultra-low-frequency (ULF) waves, and aurorae in the magnetosphere and the ionosphere. In this work, we will review the previous and recent studies on these processes and seek to build a global picture of these processes from both observation and simulation.