Final answer:
The ShakeAlert system is an earthquake early-warning system that alerts users about impending earthquakes and provides them with crucial seconds of warning to take necessary actions.
Step-by-step explanation:
The ShakeAlert system is an earthquake early-warning system developed by the United States Geological Survey (USGS) and its partners. It uses a network of seismometers to detect earthquakes as they begin and calculates the expected intensity and timing of shaking. The system then sends alerts to various users, such as emergency management agencies and the public, providing them with a few seconds to minutes of warning before the shaking reaches their location. This allows people to take immediate actions to protect themselves and reduce the dangers posed by earthquakes.
Learn more about ShakeAlert system and its functioning