Spatio-temporal variations of b-value in and around north Pakistan

Journal of Earth system science

Aamir Ali3³  Sajjad Ahmed2¹  Khaista Rehman1²  Asghar Ali2¹  Muhammad Younis Khan1²  Wajid Ali1² 

[1] Department of Geology, University of Peshawar, Khyber Pakhtunkhwa 25120, Pakistan.$$;National Centre of Excellence in Geology, University of Peshawar, Khyber Pakhtunkhwa 25120, Pakistan.$$;Department of Earth Sciences, Quaid-i-Azam University, 45320, Islamabad, Pakistan.$$

关键词: Seismicity;    b-value;    spatio-temporal distribution;    Pakistan.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

The seismotectonic structure of north Pakistan has been formed by ongoing collision between the Eurasian and Indian plates. North Pakistan and the adjoining areas experienced many large earthquakes in the past, which resulted in considerable damages and loss of life. A magnitude-homogenous earth-quake catalogue for north Pakistan and its surrounding areas for the instrumental period from 1964 to 2007 is used for analysis. We presented seismicity picture of the Hindukush–Pamir–Karakoram (HPK), Kohistan Island Arc (KIA) and Hazara–Kashmir–Himalayas (HKH) using various histograms and time series plots of the dataset. The b-value for each accreted domain is derived separately and investigated through a process of mutual correlation. Our computed temporal variation of b-value in Hazara region shows a significant decrease prior to 2005 Kashmir earthquake.

【 授权许可】

Unknown