In May 1976, a devastating earthquake of magnitude Ms 6.5 occurred in Friuli, Italy, resulting in 976 deaths, 2000 injured, and 60,000 homeless. It is notable that, at the time of the earthquake, only one station was installed in the affected region. The resulting lack of information, combined with a dearth of mitigation planning for responding to such events, lead to a clear picture of the impact of the disaster being available only after a few days.This region is now covered by nearly 100 seismological and strong‐motion stations operating in real time. Furthermore, 30 average‐cost strong‐motion stations have been recently added, with the goals of improving the density of real‐time ground‐motion observations and measuring the level of shaking recorded at selected buildings. The final goal is to allow rapid impact estimations to be made to improve the response of civil protection authorities. Today, considering the higher density seismological network, new efforts in terms of the implementation and testing of earthquake early warning systems as a possible tool for mitigating seismic risk are certainly worthwhile.In this article, we show the results obtained by analyzing in playback and using an algorithm for decentralized onsite earthquake early warning, broadband synthetic strong‐motion data calculated at 18 of the stations installed in the region, while considering the magnitude and location of the 1976 Friuli earthquake. The analysis shows that the anisotropy of the lead times is related not only to the finite nature of the source but also to the slip distribution. A reduction of 10% of injured persons appears to be possible if appropriate mitigating actions are employed, such as the development of efficient automatic procedures that improve the safety of strategic industrial facilities.

中文翻译：

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分散的现场地震预警系统能否帮助缓解意大利东北部的地震风险？1976年弗留利6.5级地震案例

1976年5月，意大利弗留利发生了6.5级强烈地震，造成976人死亡，2000人受伤和60,000无家可归。值得注意的是，在地震发生时，受灾地区仅安装了一个站。结果是缺乏信息，再加上缺乏应对此类事件的缓解计划，使得人们仅在几天后就可以清楚地了解到灾难的影响。如今，该地区已被近100个地震和强烈地震覆盖。运动工作站实时运行。此外，最近增加了30个平均成本的强运动台站，目标是提高实时地面运动观测的密度并测量选定建筑物记录的震动水平。最终目标是允许进行快速影响评估，以改善民防部门的反应。如今，考虑到更高密度的地震学网络，在地震预警系统的实施和测试中作为减轻地震风险的一种可能工具的新努力无疑是值得的。在本文中，我们展示了通过回放和使用分析获得的结果一种用于分散式现场地震预警的算法，它是在考虑到1976年弗留利地震的震级和位置的情况下，在该地区安装的18个站计算的宽带合成强运动数据。分析表明，提前期的各向异性不仅与震源的有限性有关，而且与滑移分布有关。