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日本科学技术厅自1981年开始的六年计划中决定发展综合性地震防灾系统。该系统的目标是在发展地震预报技术的同时,把可能造成的地震破坏限制在最小限度之内。其内容是: 1.在地震波到达之前,利用光通讯方式发出大地震的警报,使人们有可能紧急避难。 2.地震发生后,通过遥测技术捕捉次生灾害的扩大情况,进行适当的避难引导。 由于地震波速度大约每秒4公里,比之光速的每秒30万
The Japan Science and Technology Agency has decided to develop a comprehensive earthquake disaster prevention system since the six-year plan started in 1981. The system’s goal is to minimize the potential seismic damage while developing seismic prediction techniques. Its contents are as follows: 1. Before the arrival of the seismic wave, the use of optical communications sent a warning of major earthquakes, making it possible for people to take emergency shelter. 2. After the earthquake, capture the expansion of secondary disasters through telemetry and conduct appropriate evacuation and guidance. Due to the seismic velocity of about 4 kilometers per second, than the speed of light 300,000 per second