How are satellite images used to predict volcanoes?

Satellite images are used to monitor volcanoes by detecting changes in thermal activity, ground deformation, and gas emissions. Thermal infrared imagery can identify hot spots that indicate rising magma, while radar interferometry measures ground movement to assess swelling or subsidence. Additionally, satellite-based sensors can track volcanic gases like sulfur dioxide, which can signal impending eruptions. Collectively, these observations help scientists predict volcanic activity and assess potential hazards.