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The EGU General Assembly 2017 will bring together geoscientists from all over the world to one meeting covering all disciplines of the Earth, planetary and space sciences. The EGU aims to provide a fo...
Computer animation as a tool to visualize effects of seismic wave propagation inside heterogeneous media
computer animations numerical modelling seismic wave propagations
2015/9/30
A technique to make computer animations representing the propagation of antiplane shear waves in heterogeneous dissipative media is presented. The aim is to develop a useful tool to better investigate...
Gravity changes due to overpressure sources in 3D heterogeneous media: application to Campi Flegrei caldera, Italy
Campi Flegrei Deformation gravity finite element method heterogeneous medium
2015/9/1
Employing 3D finite element method, we develop an algorithm to calculate gravity changes
due to pressurized sources of any shape in elastic and inelastic heterogeneous media. We
consider different s...
Gravity changes due to overpressure sources in 3D heterogeneous media: application to Campi Flegrei caldera, Italy
Campi Flegrei deformation gravity finite element method heterogeneous medium
2015/9/1
Employing a 3D finite element method, we develop an algorithm to calculate gravity changes due to pressurized
sources of any shape in elastic and inelastic heterogeneous media. We consider different ...
Biochar as a growing media additive and peat substitute
Environment sphagnum peat and peat biochar carbide plant material
2015/1/6
Environmental concerns raised the demand for alternative growing media substituting Sphagnum peat. However growing media formulations still depend on peat and alternatives are limited. Biochar is carb...
AxiSEM: broadband 3-D seismic wavefields in axisymmetric media
broadband 3-D seismic wavefields axisymmetric media
2015/1/6
We present a methodology to compute 3-D global seismic wavefields for realistic earthquake sources in visco-elastic anisotropic media, covering applications across the observable seismic frequency ban...
Frustration and disorder in granular media and tectonic blocks:implications for earthquake complexity
granular media tectonic blocks implications for earthquake complexity
2009/11/16
We present exploratory analogies and speculations on the mechanisms underlying the organization of faulting and earthquake in the earth crust. The mechanical properties of the brittle lithosphere at s...
Hamiltonian approach to the derivation of evolution equations for wave trains in weakly unstable media
Hamiltonian approach evolution equations wave trains weakly unstable media
2009/11/13
The dynamics of weakly nonlinear wave trains in unstable media is studied. This dynamics is investigated in the framework of a broad class of dynamical systems having a Hamiltonian structure. Two diff...
Solute transport in fractured media–analysis of non-reversibility in tracer tests
Solute transport fractured media non-reversibility tracer tests
2009/11/2
This paper describes several small-scale (laboratory) experiments designed to simulate solute transport through fractured formations. A block of granite was broken to produce a fracture similar to tho...
Variation of Biot wave properties in fluid-saturated porous media with decrease of skeleton-stiffness
Biot theory porous media longitudinal waves reciprocal relation
2009/3/5
In this paper, various characteristics of the Biot waves in fluid-saturated porous media are examined numerically and analytically based on the relations in the previous paper (Kitsunezaki, 2004a), wh...
Equivalent Medium Parameters for Numerical Modeling in Media with Near-Surface Low Velocities
Equivalent Medium Parameters for Numerical Modeling Media with Near-Surface Low Velocities
2014/4/10
We have developed a methodology to discretize an isotropic velocity model with low velocities near the free surface for full waveform numerical modeling. The method modifies the near-surface minimum v...