Seismogenic permeability,ks

Upper limit on damage zone thickness controlled by seismogenic depth

Temporal variations of seismic anisotropy in seismogenic areas :

Des variations de paramètres physiques, avant et suite au séisme de Parkfield, 2004, Mw 6.0, et pouvant être associés à l’anisotropie sismique, ont été extraites des ondes de surface reconstruites par la méthode de cross-corrélation du bruit sismique. En effet, en cross-corrélant les trois composantes du bruit enregistré passivement à deux stations sismiques, on obtient le tenseur des corrélati...

Dynamics of seismogenic volcanic extrusion , Mount St . Helens , 2004 - 2005

behaviour characterized by nearly steady extrusion of a solid dacite plug and nearly periodic shallow earthquakes. Diverse data motivate the hypothesis that these earthquakes resulted from stick-slip motion along the margins of the plug as it was forced incrementally upward by ascending, solidifying, gas-poor magma. We formalize this hypothesis with a dynamical model that reveals a strong analo...

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...

Electromagnetic View of the Seismogenic Zones Beneath Island Arcs