Virtual Accesses to the Volcano Dynamics Computational Center at INGV Pisa

Abstract

EUROVOLC Virtual Accesses offer the opportunity to anyone with a web access to use online tools related to volcanological research. The Volcano Dynamics Computational Center at INGV in Pisa offers the access to a suite of fast-performing numerical codes aimed at modeling different aspects of volcano dynamics: solwcad: Fortran code that computes the fully non-ideal, multi-component, compositional-dependent saturation surface of H2O+CO2 in silicate melts over P-T-composition conditions relevant to magmatism and volcanism. Calculations allow to either 1) determine the partition of H2O and CO2 between the melt and gas phase, or 2) determine the entrapment pressure and corresponding gas phase composition from dissolved amounts; MAMMA: FORTRAN90 code designed to solve a conservative model for magma ascent in a volcanic conduit, described as a compressible multi-component two-phase flow. The system of conservation equations considers the effects of the main processes that magmas experience during ascent, such as crystallization, rheological changes, fragmentation, physical interaction with conduit walls, out-gassing and degassing. The model is capable of describing conduits with elliptical cross sections and depth-dependent dimensions; PyBOX: Python/Fortran90 code that solves the so-called “box model” equations describing the kinematics of a pyroclastic density current over a flat surface and in a steady atmosphere. The model integrates a procedure to account for blockage of PDCs by a rugged topography imported as a ASCII file, by adopting the so-called “energy-conoid” approach. Virtual Access will include an interface to import the DEM file and input parameters and to visualize georeferenced maps of invasion and plots of decaying dynamic pressure.