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

被引:8
作者
Rahman, Asad Ur [1 ]
Rasheed, Atif [1 ]
Najam, Fawad Ahmed [1 ]
Zaman, Saeed [2 ]
Rana, Irfan Ahmad [1 ]
Aslam, Faheem [1 ]
Khan, Sibghat Ullah [3 ]
机构
[1] Natl Univ Sci & Technol NUST, Islamabad, Pakistan
[2] Univ Engn & Technol UET, Jalozai Campus, Peshawar, Pakistan
[3] CECOS Univ IT & Emerging Sci, Peshawar, Pakistan
关键词
Earthquake catalogue; Spatial smoothening; Declustering; Catalogue completeness; Seismic source model; Pakistan; PAMIR-HINDU KUSH; PLATE BOUNDARY; SUBDUCTION; COMPLETENESS; MAKRAN; MOMENT; INDIA; IRAN; DEFORMATION; AFGHANISTAN;
D O I
10.1007/s13369-021-05439-4
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In this study, an updated earthquake catalogue and seismic source model for Pakistan region (bounded by latitude 20 degrees-40 degrees N and longitude 58 degrees-83 degrees 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.
引用
收藏
页码:5219 / 5241
页数:23
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