Abstract

The International Monitoring System (IMS) of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) is designed to be non-discriminatory and does not single out any country or region for enhanced monitoring. The seismic network, when completed, will consist of 50 primary and 120 auxiliary seismic monitoring stations in 76 countries around the world to detect and locate underground nuclear explosions. The data from the IMS stations can also be used for scientific and civil purposes. In this study, we present the results of data analysis of selected seismic events in Malaysia from 2015 to 2018 using IMS seismic stations data. Important seismicity parameters including the epicentral, magnitude distribution and seismic phases were presented in this study. We also perform comparison of the seismic events recorded by the IMS with similar seismic events detected by others seismic network at local, regional and international level. This study demonstrates that other than for nuclear explosion monitoring, the IMS data can also be used for civil and scientific applications and can make significant contribution in seismological research.

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