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首页> 外文期刊>Bulletin of Earthquake Engineering >Multivariate rule-based seismicity map of Iran: a data-driven model
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Multivariate rule-based seismicity map of Iran: a data-driven model

机译：伊朗基于规则的多变量地震图：一种数据驱动模型

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The seismic hazard map or delineation of regions with high earthquake hazard is important to plan risk mitigation strategies. Identifying areas of high seismic hazard can lead city planners to enforce better construction standards and predict areas vulnerable to slope instability. Conventional seismic hazard maps are based on limited factors like ground acceleration, ground velocity, etc. This paper presents a new class of data-driven multivariate rule–based model to create online as well as offline interactive seismic hazard map that is flexible and readily automated. A multivariate rule-based seismicity map (MRBSM) is defined as the map of regions with a future high hazard of earthquakes. The classification and regression tree method is used to extract rules that predict regions with high hazard of earthquakes with mb ≥ 4.5 in Iran. The rules generated for our MRBSM of Iran are based on a large number of geological and geophysical parameters. The MRBSM indicates that the province of Bandar Abbas, a major population center in the South of Iran has a high hazard of earthquakes with mb ≥ 4.5. In addition, our method allows identification of the most important parameters associated with earthquakes. Our analysis shows that the isostatic anomaly has the strongest correlation with earthquakes while magnetic intensity, regional Bouger anomaly, Bouger anomaly, and gravity anomaly also correlate well. Despite widespread application of a- and b-values of the Gutenberg-Richter formula, these parameters do not correlate well with earthquake hazards in the area.
机译：地震危险图或高地震危险区域的轮廓对于规划风险缓解策略很重要。识别高地震危险区域可以使城市规划人员强制执行更好的施工标准，并预测易受边坡失稳影响的区域。传统的地震灾害图是基于诸如地面加速度，地面速度等有限因素的。本文提出了一种新的基于数据驱动的基于多元规则的模型，可以灵活在线地创建在线和离线交互式地震灾害图。基于多元规则的地震活动图（MRBSM）被定义为未来地震危险性较高的区域图。分类和回归树方法用于提取规则，以预测伊朗mb ≥4.5地震高发地区。为我们的伊朗MRBSM生成的规则基于大量的地质和地球物理参数。 MRBSM指出，伊朗南部的主要人口中心阿巴斯港省（Bandar Abbas）省的mb ≥4.5地震危险性很高。此外，我们的方法可以识别与地震有关的最重要参数。我们的分析表明，等静距异常与地震的相关性最强，而磁强度，区域性Bouger异常，Bouger异常和重力异常的相关性也很好。尽管Gutenberg-Richter公式的a值和b值得到了广泛应用，但这些参数与该地区的地震危险性并没有很好的相关性。

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