A seismicity model for New Zealand

  • R. Peek University of Canterbury, Christchurch, New Zealand
  • J. B. Berrill University of Canterbury, Christchurch, New Zealand
  • R. O. Davis University of Canterbury, Christchurch, New Zealand

Abstract

A model for the distribution of shallow earthquake magnitudes in and around New Zealand is presented. The model comprises 9 onshore and 8 offshore regions, selected for their general tectonic homogeneity. For each region, values of the Gutenberg and Richter seismicity parameters a and b are estimated using seismological, geological and tectonic data. Smooth transitions between regions are achieved using concepts from fuzzy set theory. The model is well-suited to seismic risk computations.

References

Smith, W.D., "The 'NZ Quakes' package of computer programs", Techn. Note No. 76, Geophys Div. D.S.I.R., Wellington, 1979.

Adams, R.D., "Development in Studies of Earthquake Risk", Bull. N.Z. National Society Earthquake Engineering, Vol.8, pp. 1-11, 1975.

Zadeh, L.A., "Outline of a new approach to the analysis of complex systems and decision processes", Trans, on Systems, Man and Cybernetics, No. 1, Inst, of Electrical and Electronics Engineers, SMC3, 1973. DOI: https://doi.org/10.1109/TSMC.1973.5408575

Walcott, R.I., "Geodetic Strains and Large Earthquakes in the Axial Tectonic Belt of North Island, New Zealand", J. Geophys. Res., vol. 83, pp. 4419-4429, 1978.

Walcott, R.I., "Present Tectonics and Late Cenozoic Evolution of New Zealand", Geophys. J.R. Astr. Soc., Vol. 52, pp. 137-164, 1978. DOI: https://doi.org/10.1111/j.1365-246X.1978.tb04225.x

Walcott, R.I., "Plate motion and shear strain rates in the vicinity of the Southern Alps", in "The Origin of The Southern Alps", Royal Society of N.Z. £ull. 18, Wellington, pp.5-12, 1979.

Eiby, G.A., "The New Zealand Subcrustal Rift", N.Z. J. Geol. Geophys., Vol. 7, pp.109-133, 1964. DOI: https://doi.org/10.1080/00288306.1964.10420164

Lensen, G.J., "The Wellington Fault from Cook Strait to Manawatu Gorge", N.Z. J. Geol. Geophys., Vol. 1, pp.178-196, 1957. DOI: https://doi.org/10.1080/00288306.1958.10422803

Lensen, G.J., "The faulted terrace sequence at the Grey River, Awatere Valley, South Island, New Zealand", N.Z. J. Geol. Geophys., Vol. 7, pp. 871-876, 1964. DOI: https://doi.org/10.1080/00288306.1964.10428135

Lensen, G.J., "An Analysis of Progressive Fault Displacement during downcutting at the Branch river terraces, South Island, New Zealand", Bull. Geol. Soc. of America, Vol. 79, pp.545-555, 1968. DOI: https://doi.org/10.1130/0016-7606(1968)79[545:AOPFDD]2.0.CO;2

Lensen, G.J., and Velia, P., "The Waiahine River Faulted Terrace Sequence", in "Recent Crustal Movements", Roy. Soc. of N.Z. Bull. 9, pp.117-119, 1971.

Lensen, G.J., "Earth Deformation Studies in New Zealand", Tectonophysics, Vol. 29, pp.541-551, 1975. DOI: https://doi.org/10.1016/B978-0-444-41420-5.50062-9

Lensen, G.J., "Elastic and non- elastic surface deformation in New Zealand", Bull. N.Z. National Society Earthquake Engineering, Vol. 3, pp.131-142, 1970.

Mogi, K. et al., "Deformation and Fracture of Rocks", Bulletin of the Earthquake Res. Inst., University of Tokyo, Vol. 43, pp.349-379, 1965.

Lensen, G.J., "Late Quarternary Tectonic Map of New Zealand", N.Z. Geol. Survey Misc. Map Series No. 12, N.Z. D.S.I.R., Wellington 1977.

Adams, J., "Paleoseismicity of the Alpine Fault Seismic Gap, New Zealand", Geology, Vol. 8, pp. 72-76, 1980. DOI: https://doi.org/10.1130/0091-7613(1980)8<72:POTAFS>2.0.CO;2

Aki, K., "Maximum Likelihood Estimate of b in the formula log N = a - bM and its confidence limits", Bull. Earthquake Res. Inst. Vol. 43, pp.237-239, 1965.

Eiby, G.A. , "An Annotated List of New Zealand Earthquakes, 1460-1965", N.Z.J. Geol. Geophys. Vol. 11, pp. 630-642, 1968. DOI: https://doi.org/10.1080/00288306.1968.10420275

Anderson, J.G., "Estimating Seismicity from Geological Structure for Seismic Risk Studies", Bull. Seismol. Soc. Am, Vol. 69, pp.135-158, 1979.

Molnar, P., "Earthquake recurrence intervals and plate tectonics", Bull. Seismol. Soc. Am., Vol. 69, pp. 115-134, 1979.

Peek, R., "Estimation of Seismic Risk for New Zealand, A Seismicity Model and Preliminary Design Spectra", Research Report No. 80-21, Department of Civil Eng., University of Canterbury, 84pp, 1980.

Gibowicz , S.J., and Hatherton, T., "Source Properties of Shallow Earthquakes in New Zealand and Their Tectonic Associations", Geophys. J.R. Astr. Soc., Vol. 43, pp.589-605, 1975. DOI: https://doi.org/10.1111/j.1365-246X.1975.tb00649.x

Smith, W.D., "A Seismicity Model for New Zealand", Unpublished Progress Report - Relative Earthquake Risks Subcommittee, Standards Association of New Zealand, 1979.

Cornell, C.A., "Engineering Seismic Risk Analysis", Bull. Seismol. Soc. Am., Vol. 58, pp.1583-1606 , 1968.

Published
1980-12-31
How to Cite
Peek, R., Berrill, J. B., & Davis, R. O. (1980). A seismicity model for New Zealand. Bulletin of the New Zealand Society for Earthquake Engineering, 13(4), 355-364. https://doi.org/10.5459/bnzsee.13.4.355-364
Section
Articles

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