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

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 earthquak...

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Bibliographic Details
Published in:Journal of Earth System Science 2015-10, Vol.124 (7), p.1445-1456
Main Authors: Rehman, Khaista, Ali, Asghar, Ahmed, Sajjad, Ali, Wajid, Ali, Aamir, Khan, Muhammad Younis
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Earthquake damage
Earthquakes
Island arcs
Plate tectonics
Seismic activity
Seismicity
Seismology
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Temporal variations
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Summary: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 earthquake 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.
ISSN:0253-4126
0973-774X
DOI:10.1007/s12040-015-0625-2