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The Spatial Scale of Detected Seismicity

机译:探测地震的空间尺度

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An experimental method for the spatial resolution analysis of the earthquake frequency-magnitude distribution is introduced in order to identify the intrinsic spatial scale of the detected seismicity phenomenon. We consider the unbounded magnitude range m a (-a, +a), which includes incomplete data below the completeness magnitude m (c). By analyzing a relocated earthquake catalog of Taiwan, we find that the detected seismicity phenomenon is scale-variant for m a (-a, +a) with its spatial grain a function of the configuration of the seismic network, while seismicity is known to be scale invariant for m a [m (c), +a). Correction for data incompleteness for m < m (c) based on the knowledge of the spatial scale of the process allows extending the analysis of the Gutenberg-Richter law and of the fractal dimension to lower magnitudes. This shall allow verifying the continuity of universality of these parameters over a wider magnitude range. Our results also suggest that the commonly accepted Gaussian model of earthquake detection might be an artifact of observation.
机译:为了确定所探测到的地震活动现象的内在空间尺度,引入了一种实验方法来对地震频率-幅度分布进行空间分辨率分析。我们考虑了无界的幅度范围m a(-a,+ a),其中包括低于完整性幅度m(c)的不完整数据。通过分析台湾重新定位的地震目录,我们发现检测到的地震活动性对于ma(-a,+ a)是尺度变化的,其空间粒度与地震网络的配置有关,而地震活动性已知为尺度ma [m(c),+ a)不变。根据对过程空间尺度的了解,对m

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