AI 中文总结
针对印度马哈拉施特拉邦帕尔加尔地区，考虑地震概率非均匀分布等，以0.02度×0.02度网格分辨率给出该地区50年内特定超越概率下的概率地震危险性图，相比早期研究有显著改进。
AI 中文摘要
印度马哈拉施特拉邦的帕尔加尔地区近年来频繁发生地震，该地区属于印度地震区划图中的III区。鉴于该地区近期地震活动之前有许多重大地震事件，有必要以可靠和现实的方式重新评估该地区的地震危险性水平。为此，给出了帕尔加尔地区在工程基岩水平上50年内超越概率为10%和2%时，5%阻尼比的峰值地面加速度（PGA）以及0.2秒和1.0秒的伪谱加速度（PSA）的概率地震危险性图。危险性估计以0.02度×0.02度的更精细网格分辨率进行，并考虑了地震源区内地震概率的非均匀分布以及数据驱动的合适地面运动预测方程（GMPEs）的选择。最终结果中危险性图的空间变化表明相较于早期研究有显著改进。
英文摘要
The Palghar district of Maharashtra has recently received attention because of frequent occurrences of earthquakes in its vicinity in the last few years since November, 2018. The district area falls under seismic zone III, as per the seismic zonation map of India. As the recent earthquake activities have been preceded by many major seismic events in the region, it necessitates to re-evaluate the level of seismic hazard of the area in a reliable and realistic way. With this aim in mind, the probabilistic seismic hazard map of Palghar district with regard to 5% damped Peak Ground Acceleration (PGA) and Pseudo Spectral Acceleration (PSA) at 0.2 s and 1.0 s for 10% and 2% probability of exceedance (PoE) in 50 years at engineering bedrock level is presented. The estimation of hazard are performed in a finer grid resolution of 0.02 deg X 0.02 deg and takes into consideration the nonuniform distribution of earthquake probability within a seismic source zone (SSZ) and data-driven selection of appropriate Ground Motion Prediction Equations (GMPEs). The spatial variation of the hazard maps, reflected in he final results, demonstrates notable improvements over the earlier studies.
Comments20 pages,10 figures
Journal refEarthquake Engineering and Resilience, 4, 76-96 (2025)
