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An Updated Earthquake Catalogue and Source Model for Seismic Hazard Analysis of Pakistan

机译:巴基斯坦地震危害分析的更新地震目录及源模型

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In this study, an updated earthquake catalogue and seismic source model for Pakistan region (bounded by latitude 20°–40°N and longitude 58°–83° E) are developed. The updated catalogue consists of published historical (10 to 1900 CE) andinstrumental earthquake events (1900 to 2018 CE) with moment magnitude (M_w) ≥ 4.0. For this purpose, several internationaland national databases were accessed for collecting the historical and instrumentally recorded earthquake events occurred inthe study region. The collected data from various sources were homogenized in a single moment magnitude scale. Severalempirical relations were developed for conversion of earthquake magnitude in other scales to moment magnitude. The datasetsare homogenized, declustered, and processed to evaluate complete intervals for different magnitude ranges. Using thedeveloped catalogue and considering the seismo-tectonic features of the region, a number of shallow and deep area sourcezones are delineated to develop an improved seismic source model for Pakistan. The source model for spatially smoothedbackground seismicity is also developed using the updated catalogue. The developed catalogue and seismic source modelscan be reliably used to conduct an updated probabilistic seismic hazard assessment of Pakistan.
机译:在本研究中,巴基斯坦地区的更新的地震目录和地震源模型(纬度20°-40°界限显影了N和经度58°-83°E)。更新的目录包括已发布的历史(10至1900年)和仪器地震事件(1900〜2018年CE),片刻幅度(M_W)≥4.0。为此目的,几个国际获得国家数据库,以收集历史和有人录制的地震事件发生研究区域。来自各种来源的收集的数据以单矩级别均匀化。一些制定了实证关系,以在其他规模中转换地震幅度到矩幅度。数据集是均质化,降低的,并加工以评估不同幅度范围的完整间隔。使用开发目录并考虑该地区的地震构造特征,许多浅层和深度区域区域被描绘以开发一种改进的巴基斯坦地震源模型。空间平滑的源模型背景技术也使用更新的目录开发出震荡。开发的目录和地震源模型可以可靠地用于对巴基斯坦进行更新的概率地震危害评估。

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