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首页> 外文期刊>Pure and Applied Geophysics >An Evaluation of Earthquake Hazard Potential for Different Regions in Western Anatolia Using the Historical and Instrumental Earthquake Data
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An Evaluation of Earthquake Hazard Potential for Different Regions in Western Anatolia Using the Historical and Instrumental Earthquake Data

机译：利用历史和仪器地震数据评估安那托利亚西部不同地区的地震危险潜力

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摘要

We applied the maximum likelihood method produced by Kijko and Sellevoll (Bull Seismol Soc Am 79:645–654, 1989; Bull Seismol Soc Am 82:120–134, 1992) to study the spatial distributions of seismicity and earthquake hazard parameters for the different regions in western Anatolia (WA). Since the historical earthquake data are very important for examining regional earthquake hazard parameters, a procedure that allows the use of either historical or instrumental data, or even a combination of the two has been applied in this study. By using this method, we estimated the earthquake hazard parameters, which include the maximum regional magnitude $ hat{M}_{max } , $ the activity rate of seismic events and the well-known $ hat{b} $ value, which is the slope of the frequency-magnitude Gutenberg-Richter relationship. The whole examined area is divided into 15 different seismic regions based on their tectonic and seismotectonic regimes. The probabilities, return periods of earthquakes with a magnitude M ≥ m and the relative earthquake hazard level (defined as the index K) are also evaluated for each seismic region. Each of the computed earthquake hazard parameters is mapped on the different seismic regions to represent regional variation of these parameters. Furthermore, the investigated regions are classified into different seismic hazard level groups considering the K index. According to these maps and the classification of seismic hazard, the most seismically active regions in WA are 1, 8, 10 and 12 related to the Aliağa Fault and the Büyük Menderes Graben, Aegean Arc and Aegean Islands.
机译：我们采用了Kijko和Sellevoll提出的最大似然法（Bull Seismol Soc Am 79：645-654，1989； Bull Seismol Soc Am 82：120-134，1992）研究了不同地震活动性和地震灾害参数的空间分布西安纳托利亚（WA）的地区。由于历史地震数据对于检查区域地震灾害参数非常重要，因此在此研究中已采用了允许使用历史数据或仪器数据，甚至可以将两者结合使用的程序。通过这种方法，我们估算了地震危险参数，包括最大区域震级$ hat {M} _ {max}，$地震事件的活动率和众所周知的$ hat {b} $值，即频率量级的古腾堡-里希特关系的斜率。根据其构造和地震构造类型，将整个检查区域划分为15个不同的地震区域。还针对每个地震区域评估了M≥m的地震的概率，返回周期以及相对地震危险等级（定义为指标K）。将每个计算出的地震危险参数映射到不同的地震区域，以表示这些参数的区域变化。此外，考虑到K指数，将调查区域分为不同的地震危险等级组。根据这些地图和地震危险性分类，西澳最活跃的地震区域是与Aliağa断层和BüyükMenderes Graben，爱琴海弧和爱琴海群岛有关的1、8、10和12。

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