Earthquake early warning for Bucharest, Romania:: Novel and revised scaling relations
Earthquake early warning for Bucharest, Romania:: Novel and revised scaling relations
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DOI：
10.1029/2007gl029396
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发表时间：
2007-04-07
影响因子：
5.2
通讯作者：
Wenzel, F.
中科院分区：
文献类型：
--
作者：
Boese, M.;Ionescu, C.;Wenzel, F.
在罗马尼亚Vrancea区，东南喀尔巴阡山脉，类似的源机制的强震的积累，允许设计一个简单的，廉价的和强大的地震预警（EEW）系统，为布加勒斯特的领先时间约为25秒。先前建立的EEW的比例关系预测在1 - 2秒的范围内，在布加勒斯特的地面运动振幅比在震中区测得的最大P波加速度高10倍。使用额外的弱和强的运动数据，我们发现，地面震动在布加勒斯特一般高估了这个关系的一个因素。然而，预测的振幅在我们修改后的关系的95%置信区间内。对于不同的地震动参数，确定了EEW的附加预测律。2004年10月27日Vrancea地震（MW = 6.0）的比例关系的应用程序支持EEW在罗马尼亚的方法的可行性。
The accumulation of strong earthquakes with resembling source mechanisms in the Romanian Vrancea zone, SE Carpathians, allows for designing a simple, cheep and robust earthquake early warning (EEW) system for Bucharest with leading times of about 25 s. A previously established scaling relation for EEW predicts in the range from 1 - 2 s a ten times higher ground motion amplitude in Bucharest than the maximum P-wave acceleration measured in the epicentral area. Using additional weak and strong motion data, we find that ground shaking in Bucharest is generally overestimated by this relation by a factor of two. However, the predicted amplitudes are within the 95% confidence interval of our revised relation. Additional predictive laws for EEW are determined for different ground motion parameters. The application of our scaling relations to the October 27, 2004 Vrancea earthquake (M-w = 6.0) supports the feasibility of the approach for EEW in Romania.