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Type: Thesis
Title: A study of the basic components of seismic hazard assessment for the South Australian area
Author: Rossiter, D. G.
Issue Date: 1983
School/Discipline: School of Civil, Environmental & Mining Engineering
Abstract: This thesis examines briefly seismic hazard assessment procedures as used in Australia and overseas. The three base components of any analysis are examined, viz (i) spatial distribution of events within the source, (ii) recurrence of events within the source and (iii) attenuation of effects from the source. The base components are then related specifically to South Australian conditions. It is established that though there are uncertainties in the spatial distribution of events and their recurrence these problems are common to all seismic areas worldwide and these matters are receiving research attention overseas which can be applied here. The passage of time will enable better precision in defining spatial distribution and, recurrence as data are quite well recorded at present- The third component is examined and. it is established that the best use is being mad.e of scant available data at present. However attenuation relationships should not be "borrowed" as presently done from overseas areas without verification and unless strong motion instruments are distributed widely and not grouped at the city centre as at present, little future advance can be anticipated in the accuracy of seismic hazard assessment, due to the weakness inherent in attenuation assumptions.
Dissertation Note: Thesis (M.Eng. Sc.) -- University of Adelaide, School of Civil, Environmental & Mining Engineering, 1983.
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