seismic activity Archives

North China early-warning system for quakes

North China early-warning system for quakes North China has seen violent seismic activity, including an 8.2-magnitude earthquake in 1976, killing more than 242,000 people in Hebei, Beijing and Tianjin. That event was one of the deadliest calamities in human history. China started to pay attention to early earthquake warnings after the 8.0-magnitude Wenchuan earthquake, which killed nearly 70,000 people. Many countries, including Japan, Mexico and Turkey are equipped with early warning systems. A real-time system can give warnings within seconds…