CIVIL AND SCIENTIFIC APPLICATION OF IMS NETWORK DATA IN EARTHQUAKE HAZARD ASSESSMENT

International Monitoring System (IMS), using four technologies – seismic, hydroacoustic, infrasound and radionuclide. While awaiting entry-into-force, the IMS is operating in test mode yet, even now, monitoring data have potential use among the scientist for the social welfare means. Contribution to the earthquake hazard and related earthquake engineering determinations is a big development and knowledge expansion of the one of the cited technology i.e. seismic. In this direction Indonesian region bounded by 14°S–10°N and 93–141°E, which is one of the most seismically Trans-Asian and Circum-Pacific belts type active plate regions of the world where large to great earthquakes have occurred during the past hundred years have been considered. Nineteen years recent earthquake data from June 13, 1999 to July 10, 2017 have been taken from International Monitoring System (IMS) Network setup by Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), Vienna Austria. These data analyses shows that earthquake occurrences agrees with the Gumbel’s Type I extreme distribution function and has been applied to analyses those maximum magnitude data with a satisfactory degree of correlation (0.96). The earthquake hazard that existed in Indonesian region been quantified in terms of recurrence periods and probabilities of occurrence of earthquake of any given magnitude. This investigation indicates that the most probable largest annual earthquakes are close to 6.0. Also, most probable earthquake that may occur in an interval of 50 years is estimated as 6.8. Other medium to large size earthquakes which are expected to occur in this region has been predicted that may help in engineering investigations at particular site and decision making problems if planning to develop certain region for infrastructural activities.

1. Massinon, B. Benefits of potential civil and scientific applications of CTBT verification technologies, / B. Massinon // CTBTO Spectrum, 2004. – 4. – Р.17–18.

2. McCormack, D. Potential civil and scientific applications / D. McCormack // CTBTO Spectrum, 2002. – 2. – Р.1–6.

3. Gumbel, E. J. Statistics of Extremes / E. J. Gumbel //Сolumbia University Press. - New York, 1958. – p. 375.

4. Shanker, D. Earthquake Hazard and Engineering Determinations for Indonesian Region Using IMS Network Data / D. Shanker,

5. S. M. Ali and M. Singh // Geosciences, 2017. – 7(5). – Р. 150–155.