地震预警 earthquake early warning
据中国地震台网正式测定:6月17日22时55分,四川省宜宾市长宁县(北纬28.34度,东经104.90度)发生6.0级地震,震源深度16千米。
In the provincial capital Chengdu, an early warning system alarmed the public through multiple broadcasting systems about one minute before the earthquake struck. The same system alerted residents in Yibin ten seconds before the quake hit.
省会成都在地震到达前约1分钟的时候通过多个广播渠道向民众发出警示,宜宾地区则在地震到达前10秒发出预警。
地震预警四川省重点实验室主任、成都高新减灾研究所所长王暾说:“地震预警不是预报(earthquake early warning is not an earthquake forecast),而是基于物联网技术(with advanced technology from the Internet of Things),利用电波比地震波快的原理(use the theory that radio waves travel faster than seismic waves),提前几秒到几十秒实现全自动警报。”
Earthquake research has found that being aware of an earthquake three seconds beforehand can save 14 percent of casualties, 10 seconds can save 39 percent of casualties, and 20 seconds can save 63 percent of casualties.
地震研究表明,如果能在地震发生前3秒发出预警,伤亡人数可减少14%;提前10秒,将减少39%伤亡;提前20秒,可减少63%伤亡。
同时,在重要工程如化工、高铁、地铁等领域,可通过系统紧急处置减少经济损失和次生灾害(save economic losses and avoid secondary disasters)。