Model kecepatan gelombang seismik 1 dimensi wilayah papua

Hypocenter is one of the important parameters of an earthquake. Hippocenteral dissemination one of them is often used for disaster mitigation, even to know seismicity characteristics of a region. The accuracy of the hypocenter determination is strongly influenced by the seismic wave velocity model. Each region has a different speed model associated with the structure under its surface is also different. That is, it is necessary a local velocity model support the level of accuracy of a better hypocenter. This study aims to determine the local velocity model of one dimension of Papua region, as one region with a very active level of seismicity. The velocity model is obtained using the coupled hypocenter-velocity inversion method that is run using the Velest 3.3 program. The data used comes from BMKG earthquake catalog, as many as 392 earthquake events in Papua in 2017. Used as many as 24 stations BMKG network. The initial velocity model used is the IASP91 velocity model. The interim results show that the seismic wave velocity is faster than the IASP91 speed model at a depth of up to 7 km, slower to a depth of 20 km, and faster to a depth of 171 km. The residual RMS value until the 6th iteration is 0.682643 with an average GAP of 190.Kuncihiposenter, seismic wave, velocity model.