The implications of the acceleration data recorded during
the September 19, 1985 Mexican earthquake for seismic design in
Canada are investigated by determining if the deep deposits of
the Fraser Delta could cause large amplification of earthquake
motions. The conditions for amplification of low level incoming
ground motions at deep sites are identified; in particular, the
critical role of variation in shear modulus with shear strain.
The current procedure for determining site specific ground
motions is evaluated and major sources of uncertainty in the
results identified. Criteria for selecting representative input
motions for site response studies are recommended based on
analyses of Mexico City sites. A comparative study of sites in
the Fraser Delta area of British Columbia showed that offshore
subduction earthquakes should be considered when developing
design spectra for deep sites in the Delta. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/42004 |
| Date | January 1987 |
| Creators | Nichols, Andrew M. |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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