ANALISIS PROBABILITAS SEISMIC HAZARD UNTUK DAERAH KEPULAUAN MALUKU

• Main Authors: , rohima wahyu ningrum, , Prof. Dr. Sismanto, M.Si.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2011
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/90150/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=52488
• Institution: Universitas Gadjah Mada

Have been done many researcher concern prediction of seismic hazard in Indonesia, but eastern Indonesia, especially the Moluccas islands is still needed further assessment. This research was purposed to determine seismic hazard based on peak ground acceleration distribution. Probabilistic seismic hazard analysis method was used program PSHA 2007 from USGS developed by Stephen Harmsen, and have been modified by Bella in 2008. The result of this calculated obtained distribution hazard value in PGA condition (T=0.0 second) for return period of 500 years at the base rock with peak ground acceleration value ranging between 0.20 g - 4.0 g and for return period of 2500 years obtained peak ground acceleration value ranging between 0.40 g - 4.0 g. While for hazard value in base rock in spectral condition T = 0.2 second for return period of 500 years and 2500 years with peak ground acceleration value ranging between 0.2 g -0.4 g and 0.4 g - 4.0 g. For hazard value for base rock in spectral condition T=1.0 second for return value of 500 years and 2500 years with peak ground acceleration value ranging between 0.2 g - 2.4 g and 0.2 g - 2.6 g. Peak ground acceleration distribution result varied because according to the characteristics of each earthquake source zone. The result can be seen that Maluku islands, including areas that are unstable or in other words, areas with determine highseismic hazard. The peak ground acceleration values are affected by the earthquake data are complete, the characteristics of the earthquake, the earthquake source parameters, attenuation functions and geological research areas include the order of tectonic plates and others.