Earthquake hazard in New Zealand

Some implications of the Edgecumbe earthquake, March 1987

Authors

  • Warwick D. Smith DSIR Geology and Geophysics, Wellington, New Zealand

DOI:

https://doi.org/10.5459/bnzsee.23.3.211-219

Abstract

The intensities experienced near the epicentre of the Edgecumbe earthquake, 1987 March 2, were higher than expected for an earthquake of magnitude 6.3. If this earthquake can be regarded as typical for that part of New Zealand, previous estimates of earthquake hazard must be increased. This has been done by modifying the intensity formula used in an earlier study, and recomputing the hazard figures. Mean return periods of seismic shaking in the Bay of Plenty, Waikato and Northland are reduced in consequence.

References

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Cornell, C.A. 1968. Engineering seismic risk analysis. Bull. Seism. Soc. 58, 1583-1606. DOI: https://doi.org/10.1785/BSSA0580051583

Dowrick, D.J. 1989. The nature and attenuation of strong ground motion in the 1987 Edgecumbe earthquake, New Zealand. N.Z. J. Geol. Geophys. 32, 167-173. DOI: https://doi.org/10.1080/00288306.1989.10421400

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Smith, W.D.; Berryman, K.R. 1983. Revised Estimates of Earthquake Hazard in New Zealand. Bull. N.Z. Nat. Soc. Earthq. Engng. 16, 259-272. DOI: https://doi.org/10.5459/bnzsee.16.4.259-272

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Published

30-09-1990

How to Cite

Smith, . W. D. (1990). Earthquake hazard in New Zealand: Some implications of the Edgecumbe earthquake, March 1987. Bulletin of the New Zealand Society for Earthquake Engineering, 23(3), 211–219. https://doi.org/10.5459/bnzsee.23.3.211-219

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