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首页> 外文期刊>Natural Hazards >Empirical relationships between macroseimic intensity and instrumental ground motion parameters for the intermediate-depth earthquakes of Vrancea region, Romania
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Empirical relationships between macroseimic intensity and instrumental ground motion parameters for the intermediate-depth earthquakes of Vrancea region, Romania

机译：罗马尼亚武装区中间深度地震宏观强度与仪器地面运动参数的经验关系

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摘要

Empirical relationships between MSK macroseismic intensity and several engineering ground motion parameters are developed using the macroseismic and instrumental data available for five significant earthquakes (M-w magnitude 6 and above), which occurred during the past half-century in Vrancea region, Romania. The relations are suitable for the Carpathian bend zone and surroundings, and they are valid for intensity values between 5 and 8; in this range, the MSK intensity is basically defined by the level of structural damage. The capability of the selected ground motion parameters to predict the macroseismic intensity is evaluated by observing the standard deviations associated with the proposed regression models. Generally, the parameters which take into account the ground motion duration appear to be more stable predictors than the parameters based on the peak ground motion. The most reliable damage indicator appears to be the Arias intensity. The proposed regression relationships provide intensity predictions with uncertainty close to one-half unit; therefore, they are reliable tools for rapid loss estimation and emergency response coordination following a strong earthquake of Vrancea region. The derived equations represent also useful instruments for seismic risk assessment by methodologies based on macroseismic intensity, since in current practice the earthquake hazard and seismic impact are mainly given in terms of engineering ground motion parameters.
机译：MSK宏观动态强度与若干工程地面运动参数之间的经验关系是使用宏观的和仪器数据开发的，可用于五个重要地震（M-W幅度6及以上），在过去的半个世纪中发生在罗马尼亚的Vrancea地区。这些关系适用于喀尔巴阡山脉弯曲区及周边地区，它们对5到8之间的强度值有效;在此范围内，MSK强度基本上由结构损伤的水平定义。通过观察与所提出的回归模型相关的标准偏差来评估所选地面运动参数的能力来预测预测越声强度。通常，考虑地面运动持续时间的参数看起来比基于峰接地运动的参数更稳定的预测器。最可靠的损坏指示器似乎是Arias强度。拟议的回归关系提供了强度预测，不确定性接近一半单位;因此，在维兰法地区强烈地震之后，它们是快速损失估计和应急协调的可靠工具。衍生方程也代表了基于宏观操强度的方法的地震风险评估的有用仪器，因为在目前的实践中，地震危害和地震影响主要是在工程地面运动参数方面给出的。

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