G. Perillo , G. De Natale , M. G. Di Giuseppe , A. Troiano , C. Troise ,
 University of Naples Parthenope, Naples, Italy
 INGV – Osservatorio Vesuviano, Naples, Italy
Electric, magnetic and electromagnetic (em) methods are widely used to monitor active volcanoes. A review of such applications is presented in Johnston (cit). Em signals were recorded in correspondence of numerous volcanic eruptions, for example in the case of the Mt. Unzen in Giapppone, of Merapi in Indonesia, Etna in Italy and during rapid deformation in Long Valley in California. ...
J. Lippmann-Pipke, J. Kulenkampff, G. Marion, and M. Richter
Rossendorf, Institut of Radiochemistry
Research Site Leipzig
Reactive Transport Division
We apply COMSOL Multiphysics for reproducing our experimental observations of fluid flow and transport processes in geological media. Our experimental GeoEPT-method allows the 4D monitoring of transport processes in geological material on laboratory scale. Explicitly we import “realistic structures” from geologic samples scanned by means of computer tomography (CT) as stl-files into COMSOL ...
M. Souley, and A. Thoraval
Ecole des Mines
Parc de Saurupt, France
The long-term behaviour of the underground excavations is a social and economic challenge particularly in the contexts of post-mining or radioactive waste storage. Numerical modelings are currently used to understand and forecast the complex behaviour of rock mass around the underground cavities. In order to accurately perform these multiphysics modelings at high space and time scales, it is ...
K. Durga Prasad , S.V.S. Murty , V. K. Rai ,
 Planetary Sciences Division, Physical Research Laboratory, Ahmedabad, Gujarat, India
A comprehensive three dimensional finite element thermal model has been developed using COMSOL Multiphysics® software to understand the thermo-physical behaviour of the uppermost regolith layer of the moon. The model can simulate variable layers, layer thickness and dimensions and can account for complex geometry, different size, irregular meshing, parametric based variation in physics and ...
S. Titarenko, A. McCaig
School of Earth and Environment, University of Leeds, Leeds, UK
The Atlantis massif is a domal submarine seamount close to the mid-Atlantic Ridge at 30 °N. Close to the crest of the Massif, the Lost City hydrothermal field (LCHF) has been active for at least 120,000 years, venting fluids with a temperature of 40-90 °C. 5 km north of Lost City, a temperature profile has been measured in IODP Hole 1309D, with a near-conductive thermal gradient of ~100 °C/km ...
Coupled Gas Flow and Thermal and Reactive Transport in Porous Media for Simulating Waste Stabilization Phenomena in Semi-Aerobic Landfill
H. Ishimori, K. Endo, T. Ishigaki, H. Sakanakura, and M. Yamada
National Institute for Environmental Studies
Semi-aerobic landfill has interesting structure that passively provides the atmospheric oxygen into landfilled waste due to the heat convection generated by the decomposition of landfilled waste. There are limited studies on the mechanisms of the oxygen transport. This paper presents the governing equations and parameter estimation methods for the numerical simulation of the gas fluid flow and ...
E. Evgin, J.A.I. Sedano , Z. Fu
University of Ottawa, Ottawa, ON, Canada
Energy piles transfer the mechanical loads from buildings to the ground and serve as heat exchangers. Temperature changes in the ground influence its moisture content. This paper examines the effect of soil moisture content on the shaft resistance of a pile. Tests were carried out in the laboratory to determine the mechanical properties of an interface corresponding to various soil moisture ...
J. Perko, D. Mallants, E. Vermariën, and W. Cool
Belgian Nuclear Research Centre (SCK-CEN), Mol, Belgium
Belgian Agency for Radioactive Waste and Enriched Fissile Material (ONDRAF/NIRAS), Mol, Belgium
Mass transport modelling through porous media is typically characterized by complex physics and geometry. In the particular case of radionuclide transport, modelling for radioactive waste repositories, an additional level of complexity, and thus uncertainty, originates from the long time frames involved. Performing a safety analysis of a radioactive waste disposal system requires therefore ...
F. Pulvirenti[1,2], M. Aloisi, M. Mattia, and C. Monaco
Istituto Nazionale di Geofisica e Vulcanologia sezione di Catania
Università di Catania
Structural, morphological and ground deformation studies suggest that the eastern flank of Mt. Etna (eastern Sicily) is spreading seaward. According to the deep-seated spreading model, both the volcanic edifice and its uppermost basement are spreading eastwards because of magma inflation processes related to a dike complex located at a depth between the summit craters and the Valle del ...
A. H. Ito, S. R. Lautenschlager, J. H. C. Reis, A. Belincanta
Universidade Estadual de Maringá, Maringá, PR, Brazil
The percolation of water into soil can be modeled considering Darcy's Law in laminar flow. In this manner the key property is the coefficient of hydraulic conductivity. Its determination can be made through laboratory or field testing. One of the most known field tests used for determination of this property is the Slug Test. This test consists of a perforated well in the ground where a known ...