Deterministic and probabilistic Seismic Hazard Assessments for Merangin Kerinci Sumatera

Abstract This paper presents calculated ground motions for Merangin Kerinci in the Provinsi of Jambi Sumatera. The were using a probabilistic seismic hazard analysis. earthquake catalogue used analysis included all recorded earthquakes up to end July 2019, trimmed magnitude completeness. Uncertainty input parameters was considered logic tree, with branches including shallow crustal faults Great Sumatran Faults and Sumatera Megathrust Subduction. Ground are presented local site conditions, measured at those sites which can be classified as Site Class D/C (stiff soil Soft Rock/Very Dense Soil). motions, Peak Acceleration (PGA), spectral accelerations periods ranging from 0.1 s 10.0s site. Data return 175 years, 475 2,500 5,000 10,000 years PSHA, mean, 50 th , 84 percentile confidence levels DSHA. Compared Indonesian Seismic Hazard Map (ISHM) 2017 (at DSHA 5% damping 84th Percentile), deterministic PGA values this study relatively closed, is accounted 0.58g found compared range 0.6g – 0.7 ISHM 2017. On other hand, particular period (SEE), assessment 0.73g lower than 0.8g 0.9g