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Seismic Hazard Assessment of Dhanbad City, India, by deterministic approach
Natural Hazards ( IF 3.3 ) Pub Date : 2020-05-21 , DOI: 10.1007/s11069-020-04059-9
Rahul Sinha , Rajib Sarkar

Dhanbad is the largest producer of coal in the state of Jharkhand, India, and hence, it is one of the most important cities in the country. Considering the present-day importance and future growth of the city, assessment of seismic hazard is extremely needed, especially for the mining authorities and the city planners. The prime objective of this study is to develop seismic hazard map of Dhanbad City for the bedrock level following the deterministic approach. In view of the absence of the region-specific Ground Motion Prediction Equations, the concept of logic tree comprising four different attenuation models is adopted. It is observed that the Peak Ground Acceleration in the range of 0.10–0.26 g may be expected in the city. Specifically, southern blocks of the city such as Baghmara, Jharia and Baliapur are found to be most vulnerable to the seismic hazard. Besides, developed seismic hazard map is divided into four zones and smooth acceleration response spectrums are proposed for the zones as per the expected seismicity in different parts of the city.



中文翻译:

确定性方法的印度丹巴德市地震危险性评估

丹巴德(Dhanbad)是印度贾坎德邦最大的煤炭生产商,因此,它是该国最重要的城市之一。考虑到城市的重要性和未来的发展,特别是对于采矿当局和城市规划人员而言,非常需要评估地震灾害。这项研究的主要目的是按照确定性方法为基岩水平绘制丹巴德市的地震灾害图。鉴于不存在区域特定的地面运动预测方程,采用了包含四个不同衰减模型的逻辑树的概念。据观察,该城市的峰值地面加速度可能在0.10-0.26 g范围内。具体来说,该城市的南部街区,例如Baghmara,人们发现,贾哈里亚(Jharia)和巴里阿布尔(Balianapur)最容易遭受地震危害。此外,根据城市不同地区的预期地震活动性,将已开发的地震灾害图分为四个区域,并为这些区域提出了平滑的加速度响应谱。

更新日期:2020-05-21
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