Viscoelastic crustal deformation by finite quasi-static sources

Journal Article · Sun Dec 10 04:00:00 EST 1978 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JB083iB12p05937· OSTI ID:6475289

Rundle, J B

A method is formulated for the exact calculation of Green functions for finite quasi-static sources in an elastic layer over a linear viscoelastic half space. The displacements due to the same sources in an elastic layer over an elastic half space are first computed, and then the well-known correspondence principle of linear viscoelasticity is applied. The most difficult part of the problem, the inversion into the time domain, is accomplished by means of a novel technique. As a first example of the mothod, the growth of the error in an approximate Green function for a strike slip source is evaluated. Second, the viscoelastic uplifts due to an expanding sphere are calculated for two half-space rheologies. Third, the time dependent uplifts due to point dip slip-sources are computed. Finally, the dip slip Green functions are integrated over a finite rectangular fault surface, and the coseismic and postseismic uplifts are compared.

• Research Organization: Sandia Laboratories, Albuquerque, New Mexico 87185
• OSTI ID: 6475289
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 83:B12; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580201* -- Geophysics-- Seismology & Tectonics-- (1980-1989)
DEFORMATION
EARTH CRUST
ELASTICITY
FUNCTIONS
GREEN FUNCTION
MECHANICAL PROPERTIES
NUMERICAL SOLUTION
RHEOLOGY
TENSILE PROPERTIES