Volcano monitoring involves observing and studying volcanoes to predict eruptions and assess hazards. Scientists use various tools, such as seismographs to detect earthquakes, gas sensors to measure volcanic gases, and satellite imagery to track changes in the volcano's shape. These methods help identify signs of volcanic activity, allowing for timely warnings to nearby communities. Monitoring is typically conducted by organizations like the United States Geological Survey (USGS) and other national geological agencies. They analyze data collected from multiple sources to create models that forecast potential eruptions. This information is crucial for ensuring public safety and minimizing the impact of volcanic events.