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Seismic Hazard Analysis for Southern Slope of the Greater Caucasus (Azerbaijan)

机译：大高加索南坡地震危害分析（阿塞拜疆）

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摘要

In this paper seismic hazard for the sourthern slope of the Greater Caucasus (Azerbaijan) was assessed by using five major parameters: moment magnitude, simulated peak ground acceleration (PGA) from four target earthquakes, intensity scenario, amplification factor and b value. The deterministic scenario-based seismic hazard assessment method was applied by using the seismic catalogues compiled by the Republican Center of Seismological Survey at Azerbaijan National Academy of Sciences. Additionally this study presents hazard assessment analysis on 67 active faults tracing in the southern slope of the Greater Caucasus, considering the fault's location, size and length, and calculating the magnitude for those faults and lineaments estimated by empirical correlations. Our findings are: (1) maximum earthquake of Mw 8.0 is estimated for the western area zone and is used to generate one of the seismic scenarios of the region; (2) intensity distribution classifies the region into the highest hazard level with intensity value of 7 and over in the westward part and also in the eastward of the studied territory, in contrast to some areas in the southern part of the region which has the lowest level with intensity value of 6 and over; (3) the b value distribution shows that lower values are observed in the western part of the region (Zagatala, Sheki), in the Shamakhi area and on some areas of the northern part indicating higher stress in those areas; (4) PGA map from scenario earthquakes demonstrates that the very high PGAs are scattered in the west and east parts of the study area, while independently from the epicenter of the target earthquakes, the low and very low PGA is scattered in the central part of the study area. Such seismic hazard analysis with consideration of one of the main five parameters and target earthquake scenarios could help the region's sustainable development against earthquakes.
机译：在本文中，通过使用五个主要参数评估了较大的高加索（阿塞拜疆）的Sourthern坡度的地震危害：来自四个目标地震，强度场景，扩增因子和B值的模拟峰接地加速度（PGA）。通过使用阿塞拜疆国家科学院共和党地震调查中心编制的地震目录来应用基于确定的基于情景的地震危害评估方法。此外，本研究提出了对更大的高加索南部坡度的67个活性故障的危险评估分析，考虑到故障的位置，大小和长度，并计算通过经验相关性估计的那些故障和线程的幅度。我们的研究结果是：（1）西部地区估计MW 8.0的最大地震，用于产生该地区的地震情景之一; （2）强度分布将该地区分类为最高危险水平，强度值为7岁及以上，在研究领域的东部，与该地区南部的某些地区相比，具有最低的区域强度值6又结合; （3）B值分布表明，在苏曼地区的区域（Zagatala，Sheki）的西部和北部某些地区观察到较低的值，表明这些区域的压力更高; （4）来自场景地震的PGA地图表明，非常高的PGA在研究区的西部和东部分散，同时独立地从目标地震的震中，低矮的PGA散落在中央部分研究区。考虑到主要五个参数之一和目标地震情景的这种地震危害分析可以帮助该地区对地震的可持续发展。

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