A threedimensional viscoelastic model of a strike slip fault
Abstract
An analytic approximation to the Green's function for the displacements due to a strike slip point source in an elastic layer over a viscoelastic halfspace is developed. This approximate Green's function is useful because it can be analytically integrated over the fault surface. Comparison with a numerical integration of the exact solution integral indicates that the approximation is quite good. The approximate Green's function is integrated analytically to obtain the displacements due to a finite rectangular strike slip fault in an elastic layer over a viscoelastic halfspace. Ground displacements and angle changes from a model survey net are computed to illustrate the viscoelastic relaxation which follows a fracture in the elastic region.
 Publication:

Unknown
 Pub Date:
 1975
 Bibcode:
 1975tdvm.rept.....R
 Keywords:

 Earthquakes;
 Geological Faults;
 Three Dimensional Models;
 Viscoelasticity;
 Displacement;
 Elastic Media;
 Green'S Functions;
 Half Spaces;
 Integral Calculus;
 Mathematical Models;
 Relaxation (Mechanics);
 Slip;
 Geophysics