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Numerical Evidence of Unrest-Related Electromagnetic Effects in the Campi Flegrei Caldera, Italy

G. Perillo [1], G. De Natale [2], M. G. Di Giuseppe [2], A. Troiano [2], C. Troise [2],
[1] University of Naples Parthenope, Naples, Italy
[2] 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. ...

Model of Sub-Surface Heat Rejection in Alternative Cooling Systems

E. Holzbecher [1], T. Manchester [2],
[1] German University of Technology in Oman (GUtech), Halban, Oman
[2] Univ. Utrecht, Utrecht, Netherlands

A model is presented for heat rejection in the subsurface. Geometries of different dimension are coupled by linear and general extrusions. In that way it is possible to deal with multi-scale physical set-up. An example shows the high influence of groundwater flow.

Lithosphere-Scale 3D Thermal Models of the Norwegian Continental Shelf

Y. P. Maystrenko [1],
[1] Geological Survey of Norway (NGU), Trondheim, Norway

To reveal key features of the thermal pattern at different structural levels of the Norwegian continental shelf and the adjacent mainland, the lithosphere-scale 3D structural models have been used to represent a structure of the sedimentary cover, underlying crystalline crust, and lithospheric mantle during a 3D thermal modeling. For the construction of these 3D models, all available geological ...

Building a Robust Numerical Model for Mass Transport Through Complex Porous Media

J. Perko[1], D. Mallants[1], E. Vermariën[2], and W. Cool[2]
[1]Belgian Nuclear Research Centre (SCK-CEN), Mol, Belgium
[2]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 ...

Use of COMSOL as an Educational Tool Through its Application to Ground Water Pollution

A. Modaressi-Farahmand-Razavi[1]
[1]MSS-Mat Laboratory, CNRS, Ecole Centrale Paris, Châtenay Malabry, France

Ensuring the quality of underground water and controlling its quantity is of major concern for the population. Therefore, this subject attracts many students from different specialties at different levels of their curriculum. In fact, the pedagogic objectives of the course may be different according to the level or/and interest of the students and COMSOL is used due to its versatility. In this ...

Modeling CO2 storage Using Coupled Reservoir-Geomechanical Analysis

T.I. Bjørnarå, F. Cuisiat, E. Aker, and E. Skurtveit
Norwegian Geotechnical Institute(NGI), Oslo, Norway

The geomechanical effects related to CO2 injection into the Krechba formation at In Salah, Algeria, are considered through a coupled modeling approach to simulate simultaneously CO2 migration in the aquifer and the surrounding formations, as well as the poro-elastic stress changes occurring during injection. The model is based on the simultaneous resolution of the governing equations for two ...

Deep-Seated Spreading Model Tested on Etna Mount with FEM

F. Pulvirenti[1,2], M. Aloisi[1], M. Mattia[1], and C. Monaco[2]
[1]Istituto Nazionale di Geofisica e Vulcanologia sezione di Catania
[2]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 ...

The Campi Flegrei Deep Drilling Project ‘CFDDP’: Understanding the Magma-water Interplay at Large Calderas

G. De Natale[1], G. Perillo[2], C. Troise[1], and P. Gasparini[3]
[1]INGV-Osservatorio Vesuviano, Naples, Italy
[2]Università degli Studi di Napoli Parthenope, Naples, Italy
[3]AMRA scarl, Naples, Italy

Campi Flegrei caldera is a good example of the most explosive volcanism on the Earth, a potential source of global catastrophes. It has the advantage that the most interesting structural details and main volcanic features appear located at shallower depth, making it a natural candidate for a deep drilling project aimed to understand the volcanic structure. The CFDDP project, aims to ...

Upscaling of Heterogeneous Rock Properties via a Multiscale Image to Simulation Approach

S. Zhang[1], M. Pal[2], P. Barthelemy[1], M. Lei[1]
[1]Visualization Sciences Group, Burlington, MA, USA
[2]Shell International Exploration and Production, Rijswijk, The Netherlands

The mass and recoverability of oil and gas in unconventional reservoirs strongly depend on the understanding the petrophysical properties of the rocks at a large range of scales. Three-dimensional imaging is capable of unveiling the detailed microstructures within the rocks down to the nanometer scale. Using a multiscale imaging protocol, a Devonian shale rock sample with heterogeneities is ...

Investigating the Impacts of Hydrogeological Parameters on DSI Efficiency through Numerical Simulation

Y. Jin[1], E. Holzbecher[1], S. Ebneth[2]
[1]Department of Applied Geology, GZG, Georg-August- University of Göttingen, Göttingen, Germany
[2]Hölscher Wasserbau, Haren, Germany

Düsensauginfiltration (DSI),‘nozzle-suction-infiltration’, is a new method for dewatering that avoids groundwater abstraction from the aquifer. Drawdown is achieved via pumping of groundwater at upper abstraction section, meanwhile, all the pumped water is injected through the same borehole, but in greater depth. We use COMSOL Multiphysics® for the development of a 2D model that simulates ...