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Robinson, Arthur R. Lai, Gwolong 2011-05-07T13:46:40Z 2011-05-07T13:46:40Z 10000-01-01 1994 Two analytical approaches based on the methods of self-similar potentials and rotational superposition are developed for the study of three-dimensional dislocation source models for earthquakes. The first approach deals with the sudden stopping of a spreading circular shear dislocation. The second approach is an extension of the usual rotational superposition by including a stretching effect, which leads to the solution of problems such as the propagation of an elliptical shear dislocation. The combined use of these two techniques permits an analytical solution for the problem of an elliptical shear dislocation that expands on a plane in an elastic unbounded medium and then suddenly stops. These results for a full space are then used as the incident waves for studies of the same dislocation source in a homogeneous half space and in a layered half space. In these problems, the subsurface fault plane and any interface between layers are taken parallel to the surface. The induced motions are shown to change considerably if the sudden stopping is included in the dislocation model. As expected, a layered structure of the medium influences the character of the surface response significantly. The results suggest that intermittent faulting processes as well as local geology must be taken into account in the development of a reasonable earthquake source model. Made available in DSpace on 2011-05-07T13:46:40Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9503246.pdf: 3826081 bytes, checksum: a3ee17d89821bc62dbc25a998b2bb094 (MD5) Previous issue date: 1994 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:59:03Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:27:48-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9503246 (UMI)AAI9503246 http://hdl.handle.net/2142/22647 eng Copyright 1994 Lai, Gwolong Applied Mechanics Geophysics Engineering, Civil Dynamic propagation of shear dislocations applied to seismic models text Civil and Environmental Engineering Civil and Environmental Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.