Development of Numerical Simulations in Determining The Energy Liberated From A Magma Chamber
Alamta Singarimbun

Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Ganesha 10, Bandung, 40132, Indonesia

Abstract

In the sequence processing of cooling magma, heat is lost to its surroundings. In this process, liquid fractionation of molten magma may occur. Gas bubbles rise and grow in the magma. Under the action of buoyancy effect, the gas bubbles go to the roof of the magma chamber and then they go to the earth^s surface through the fracture zone area. It suggests us that these features reflect the dynamics of the degassing magma. The flow rate of the discharge magmatic water depends on the temperature (T), viscosity of magma (&#956-), density of gas (&#961-_g), density of molten magma (&#961-_m), the gas volume fraction in the magma (&#945-), dan gravity acceleration (g). By using a model of degassing magma with some assumptions, the flow rate of magmatic water discharged can be estimated.

Keywords: magma, viscosity, density, magma fraction volume, gravity acceleration

Topic: EARTH, ATMOSPHERIC, AND SPACE SCIENCE