The Effect of Different Attenuation Models on Earthquake Hazard in the Newcastle and Lake Macquarie Region, Australia

David Robinson; Trevor Dhu; John Schneider

doi:10.1071/ASEG2004ab123

ISSN: 2202-0586
E-ISSN:

oa The Effect of Different Attenuation Models on Earthquake Hazard in the Newcastle and Lake Macquarie Region, Australia
Authors David Robinson^a, Trevor Dhu^b and John Schneider^c
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^a Geoscience Australia,, Australia, [email protected] ^b Geoscience Australia,, Australia, [email protected] ^c Geoscience Australia,, Australia, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2004, Issue ASEG2004 - 17th Geophysical Conference, Dec 2004, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2004ab123
- Published online: 01 Dec 2004

Abstract

Modelling earthquake hazard and risk involves the incorporation of source, attenuation, site response, building damage and financial loss models. Each of these input models has its own uncertainties. Moreover, in most cases there is more than one possible choice for each of the input models. For example, many regions of the world have several attenuation models that can be used in studies of earthquake hazard and risk.

This paper demonstrates the need to incorporate multiple attenuation models when modelling earthquake hazard and risk by illustrating the effect of using three different attenuation models. Results indicate that varying the attenuation model can almost double the earthquake hazard and triple the earthquake risk estimates in the Newcastle and Lake Macquarie region

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References

Atkinson, G. and Boore, D. (1997) Some comparisons between recent ground-motion relations, Seismological Research Letters, 68(1): 24-30.
Campbell, K. (2003) Strong-Motion Attenuation Relations in International Hanbook of Earthquake & Engineering Seismology, Lee, W., Kanamori, H., Jenning, P. and Kisslinger, C. (eds.), Academic Press, Massachusetts, USA, pp. 1003-1012.
Dhu, T. and Jones T. (2002) Earthquake Risk in Newcastle and Lake Macquarie. GA Record 2002/15, ACT, Geoscience Australia.
Dhu, T., Allen, T., Cummins, P., Leonard, M. Robinson, D. and Schneider, J. (2004) A comparison of response spectra from Australia earthquakes and North American attenuation models, 2004 New Zealand Society for Earthquake Engineering Conference, Rotorua, New Zealand.
McGuire, R. K. and Arabasz, W. J. (1990) An introduction to probabilistic seismic hazard analysis in Geotechnical and Environmental Geophysics - Volume III: Society of Exploration Geophysics.
Robinson, D, Mendez, A., Fulford, G., Dhu, T., Jones, T. and Schneider, J. (2003) Recent Advances in the modelling of earthquake hazard in Australia: part 2 - estimating the hazard . ASEG 16th Geophysical Conference and Exhibition, February 2003, Adelaide.
Schneider, J., Robinson, D., Clark, D., Dhu, T. and Edwards, M. (2003) Earthquake risk in Australia: How well do we understand it?, Catastrophic Risks and Insurability, Proceedings oftheAon Re Hazards and Capital Risk Management Series, 37-62, Gold Coast, Queensland.
Somerville, P., Collins, N, Abrahamson, N, Graves, R. and Saika, C. (2001) Ground motion attenuation relations for the Central and Eastern United States, United States Geological Survey Report, 99HQGR0098, San Francisco.
Standards Australia (1993) AS1170.4-1993 : Minimum design loads on structures : Part 4: Earthquake loads, Standards Australia.
Toro, G., Abrahamson, N. and Schneider, J. (1997) Model of strong ground motions from earthquakes in Central and Eastern North America: Best estimates and uncertainties, Seismological Research Letters, 68(1): 41-57.

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Article Type: Research Article

Keyword(s): attenuation model; earthquake hazard; earthquake risk; Newcastle and Lake Macquarie; probabilistic seismic hazard analysis; probable maximum loss

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