#TITLE_ALTERNATIVE#

• Main Author: Setyo Hutomo B. (NIM . 10211013), Vincencius
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24641
• Institution: Institut Teknologi Bandung

Mount Sinabung is one of the volcanoes which is categorized as an active volcano in Indonesia, even in the world. The activity in recent years gave an effect to people and environment around it. The eruption products of Mount Sinabung are pyroclastic flow, lava ow, or volcanic mudow. In this research, pyroclastic density current dynamic analyzed which might happen if the eruption occurred at Mount Sinabung. Pyroclastic density current consist of fragmented volcanic ash, small rocks, and heated volcanic gases which are denser than the surrounding atmosphere. The dynamics of pyroclastic density current depends on material viscosity and volume. This simulation is made using Titan2D software. Titan2D is a computer program designed for simulating geological mass ow over the surface or topography. Based upon a model for incompressible Coulomb continuum, the conservation equations for mass and momentum are solved with a Coulomb-type friction term at the interface between the granular material and the basal surface. The Digital Elevation Model data from Center for Volcanology and Geological Hazard Mitigation is used to modeling pyroclastic flow. Computer simulation of pyroclastic flow done until 120 seconds, vary the basal friction, internal friction, and dome volume data. The results shows that the highest pyroclastic floow velocity happened at bed friction 12o and internal friction 25o. Furthermore, the areas affected by pyroclastic density current can be known using Quantum GIS software. The results of overlay shows that Bekarah and Simacem village are affected at 1 million m3 and 2 million m3 dome volume.