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) and instrumental earthquake events (1900 to 2018 CE) with moment magnitude (M_w) ≥ 4.0. For this purpose, several international and national databases were accessed for collecting the historical and instrumentally recorded earthquake events occurred in the study region. The collected data from various sources were homogenized in a single moment magnitude scale. Several empirical relations were developed for conversion of earthquake magnitude in other scales to moment magnitude. The datasets are homogenized, declustered, and processed to evaluate complete intervals for different magnitude ranges. Using the developed catalogue and considering the seismo-tectonic features of the region, a number of shallow and deep area source zones are delineated to develop an improved seismic source model for Pakistan. The source model for spatially smoothed background seismicity is also developed using the updated catalogue. The developed catalogue and seismic source models can be reliably used to conduct an updated probabilistic seismic hazard assessment of Pakistan.

在这项研究中，开发了巴基斯坦地区（以北纬20°–40°N和东经58°–83°E为边界）的更新的地震目录和地震源模型。更新的目录包括已发布的历史地震（公元10至1900年）和仪器地震事件（公元1900至2018年），其震级为（M _w）≥4.0。为此，访问了几个国际和国家数据库，以收集研究区域发生的历史和仪器记录的地震事件。从各个来源收集的数据在单个矩量级范围内进行均质化。为了将其他尺度的地震震级转换成矩震级，开发了几种经验关系。对数据集进行均化，解聚和处理，以评估不同幅度范围的完整间隔。使用已开发的目录并考虑该地区的地震构造特征，划定了许多浅层和深层震源区，以开发巴基斯坦的改进震源模型。使用更新的目录还开发了空间平滑背景地震活动性的源模型。