Ground Quake is a Staff Upgrade acquired late in Star Fox Adventures. It involves Fox building up energy with the staff while jumping and then slamming the staff into the ground to create a blue shockwave. The move uses up a large portion of the Staff Energy Meter.
In Walled City, Fox learns the Super Ground Quake, which is more powerful than Ground Quake. The main difference is that it can defeat RedEyes, which is required to get to the Gold RedEye Tooth. The Super Ground Quake creates a larger, orange shockwave when Fox lands onto the ground.