Frictional Discharge from Sheared Asperities: Implication for Fractal Seismo-electromagnetic Radiation

Electric Charge Fractal Transport and Electromagnetic High Frequency Radiation on the Lightning Discharge Preliminary Stage

We consider the thunderstorm (TC) activity on the base of a cellular automaton model on tree-dimensional lattice. Each site of the lattice is related to a time-dependent scalar that characterises potential of the point. In our model the potential differences between the neighbouring sites are growing due to the instability effects. The potential difference growth is limited by some critical val...

Time-scale invariances in preseismic electromagnetic radiation, magnetization and damage evolution of rocks

We investigate the time-scale invariant changes in electromagnetic and mechanical energy releases prior to a rock failure or a large earthquake. The energy release processes are caused by damage evolutions such as crack propagation, motion of charged dislocation, area-enlargement of sheared asperities and repetitive creep-rate changes. Damage mechanics can be used to represent the time-scale in...

Inductive seismo-electromagnetic effect in relation to seismogenic ULF emission

During the seismic wave propagation through the crust, the electromagnetic pulse can originate due to MHD conversion in this conductive medium. On the assumption of simple models of seismic wave excitation and attenuation, the problem is reduced to the analysis of a diffusionlike equation for a vector potential function. In this way, we need to change the classical gauge condition. A semianalyt...

Precisely cyclic sand: self-organization of periodically sheared frictional grains.

The disordered static structure and chaotic dynamics of frictional granular matter has occupied scientists for centuries, yet there are few organizational principles or guiding rules for this highly hysteretic, dissipative material. We show that cyclic shear of a granular material leads to dynamic self-organization into several phases with different spatial and temporal order. Using numerical s...

Electromagnetic radiation from bound electrons