Open AccessOn seismic waves in a visco-elastic earth
Author(s) -
Nina M. Hosali
Publication year - 1923
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1923.0108
Subject(s) - elasticity (physics) , crust , possession (linguistics) , viscoelasticity , viscosity , classical mechanics , geology , mechanics , mathematics , physics , mathematical analysis , geophysics , thermodynamics , philosophy , linguistics
Experiments have shown that the rocks which form the outermost crust of the Earth differ in their behaviour under stress from that of an ideal elastic solid, one of the more important departures being the possession of “ viscous ” properties. Galitzin, Nagaoka and Rudski have proposed to take account of viscosity by adding a “ frictional ” term or terms to the equations of motion of the ordinary theory of elasticity, and have applied the modified equations to problems of seismology. An alternative procedure is to assume some stress-strain-time law, and from this to deduce the laws of wave-propagation.