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A detailed seismic zonation model for shallow earthquakes in the broaderAegean area

机译：爱琴海地区较浅地震的详细地震分区模型

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In the present work we propose a new seismic zonation model of area typesources for the broader Aegean area, which can be readily used for seismichazard assessment. The definition of this model is based not only onseismicity information but incorporates all available seismotectonic andneotectonic information for the study area, in an attempt to define zoneswhich show not only a rather homogeneous seismicity release but also exhibitsimilar active faulting characteristics. For this reason, all availableseismological information such as fault plane solutions and thecorresponding kinematic axes have been incorporated in the analysis, as wellas information about active tectonics, such as seismic and active faults.Moreover, various morphotectonic features (e.g. relief, coastline) were alsoconsidered. Finally, a revised seismic catalogue is employed and earthquakeepicentres since historical times (550?BC–2008) are employed, in order todefine areas of common seismotectonic characteristics, that could constitutea discrete seismic zone. A new revised model of 113 earthquake seismic zonesof shallow earthquakes for the broader Aegean area is finally proposed.Using the proposed zonation model, a detailed study is performed for thecatalogue completeness for the recent instrumental period.Using the defined completeness information, seismicity parameters (such as G–R values) for the 113 new seismic zones have been calculated, and their spatial distribution was also examined. The spatial variation of the obtained b values shows an excellent correlation with the geotectonic setting in the area, in good agreement with previous studies. Moreover, a quantitative estimation of seismicity is performed in terms of the mean return period, Tm, of large (M??≥??6.0) earthquakes, as well as the most frequent maximum magnitude, Mt, for a typical time period (T??=??50 yr), revealing significant spatial variations of seismicitylevels within the study area. The new proposed seismic zonation model and itsparameters can be readily employed for seismic hazard assessment for thebroader Aegean area.
机译：在目前的工作中，我们提出了一个适用于更广泛的爱琴海地区的面源震源分区模型，该模型可以很容易地用于地震危险性评估。该模型的定义不仅基于地震信息，而且结合了研究区域所有可用的地震构造和新构造信息，以试图定义不仅显示出相当均匀的地震活动性而且还表现出类似活动断裂特征的区域。因此，分析中包括了所有可用的地震学信息，例如断层平面解和相应的运动学轴，以及关于活动构造的信息，例如地震和活动断层。此外，还考虑了各种构造特征（如起伏，海岸线）。 。最后，采用了经过修订的地震目录，并采用了自历史（550？BC–2008）以来的地震记录，以定义具有共同地震构造特征的区域，这些区域可能构成离散的地震带。最后提出了一个新的爱琴海地区113个浅层地震地震带的修订模型。使用所提出的分区模型，对最近仪器时期的目录完整性进行了详细的研究。 使用已定义的完整性信息，已经计算出113个新地震带的地震活动性参数（例如G–R值），并检查了它们的空间分布。获得的 b 值的空间变化与该地区的大地构造环境具有极好的相关性，与先前的研究非常吻合。此外，根据平均返回期 T m 对地震活动性进行定量估计，该平均返回期大（ M ？ ≥≥6.0）地震，以及典型时间段（ T 中最频繁的最大震级 M t i> ?? =？50年），揭示了研究区域内地震活动水平的显着空间变化。新提出的地震分区模型及其参数可以很容易地用于更广泛的爱琴海地区的地震危害评估。

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