Seismic hazard estimation in stable continental regions

Does PSHA meet the needs for modern engineering design in Australia?

  • Trevor I. Allen Geoscience Australia, Canberra ACT


Damaging earthquakes in Australia and other regions characterised by low seismicity are considered low probability but high consequence events. Uncertainties in modelling earthquake occurrence rates and ground motions for damaging earthquakes in these regions pose unique challenges to forecasting seismic hazard, including the use of this information as a reliable benchmark to improve seismic safety within our communities. Key challenges for assessing seismic hazards in these regions are explored, including: the completeness and continuity of earthquake catalogues; the identification and characterisation of neotectonic faults; the difficulties in characterising earthquake ground motions; the uncertainties in earthquake source modelling, and; the use of modern earthquake hazard information to support the development of future building provisions.

Geoscience Australia recently released its 2018 National Seismic Hazard Assessment (NSHA18). Results from the NSHA18 indicate significantly lower seismic hazard across almost all Australian localities at the 1/500 annual exceedance probability level relative to the factors adopted for the current Australian Standard AS1170.4–2007 (R2018). These new hazard estimates have challenged notions of seismic hazard in Australia in terms of the recurrence of damaging ground motions. This raises the question of whether current practices in probabilistic seismic hazard analysis (PSHA) deliver the outcomes required to protect communities and infrastructure assets in low-seismicity regions, such as Australia. This manuscript explores a range of measures that could be undertaken to update and modernise the Australian earthquake loading standard, in the context of these modern seismic hazard estimates, including the use of alternate ground-motion exceedance probabilities for assigning seismic demands for ordinary-use structures.

The estimation of seismic hazard at any location is an uncertain science, particularly in low-seismicity regions. However, as our knowledge of the physical characteristics of earthquakes improve, our estimates of the hazard will converge more closely to the actual – but unknowable – (time independent) hazard. Understanding the uncertainties in the estimation of seismic hazard is also of key importance, and new software and approaches allow hazard modellers to better understand and quantify this uncertainty. It is therefore prudent to regularly update the estimates of the seismic demands in our building codes using the best available evidence-based methods and models.


Vanneste K, Stein S, Camelbeeck T and Vleminckx B (2018). "Insights into earthquake hazard map performance from shaking history simulations". Sci. Rep., 8: 1855, doi: 10.1038/s41598-018-20214-6. DOI:

Gerstenberger MC, Marzocchi W, Allen T, Pagani M, Adams J, Danciu L, Field E, Fujiwara H, Luco N, Ma K-F, Meletti C and Petersen M (2020). "Probabilistic seismic hazard analysis at regional and national scale: state of the art and future challenges". Rev. Geophys., doi: 10.1029/2019RG000653R.

Pagani M, Monelli D, Weatherill G, Danciu L, Crowley H, Silva V, Henshaw P, Butler R, Nastasi M, Panzeri L, Simionato M and Vigano D (2014). "OpenQuake Engine: An open hazard (and risk) software for the Global Earthquake Model". Seism. Res. Lett., 85(3): 692–702, doi: 10.1785/0220130087. DOI:

Lee Y, Graf W and Hu Z (2018). "Characterizing the epistemic uncertainty in the USGS 2014 National Seismic Hazard Mapping Project (NSHMP) ". Bull. Seism. Soc. Am., 108(3A): 1465-1480, doi: 10.1785/0120170338. DOI:

Allen TI, Griffin JD, Leonard M and, Clark DJ, Ghasemi H (2020). "The 2018 National Seismic Hazard Assessment of Australia: quantifying hazard changes and model uncertainties". Earthq. Spectra, doi: 10.1193/031319EQS057M.

Gutenberg B and Richter CF (1944). "Frequency of earthquakes in California". Bull. Seism. Soc. Am., 34(4): 185-188.

Ghasemi H and Allen TI (2018). "Selection and ranking of ground-motion models for the 2018 National Seismic Hazard Assessment of Australia: summary of ground-motion data, methodology and outcomes". Geoscience Australia Record 2018/29, Canberra, pp. 29, doi: 10.11636/Record.2018.029. DOI:

Allen T, Griffin J, Leonard M, Clark D and Ghasemi H (2018). "The 2018 National Seismic Hazard Assessment for Australia: model overview". Geoscience Australia Record 2018/27, Canberra, pp. 126, doi: 10.11636/Record.2018.027. DOI:

Standards Australia (2007). "Structural design actions, part 4: Earthquake actions in Australia". Standards Australia AS 1170.4–2007, Sydney, NSW, pp. 52.

McCue K (2019). "A comparison of earthquake hazard modelled results". Australian Earthquake Engineering Society 2019 Conference, Newcastle, New South Wales.

Australian Building Codes Board (2016). "National Construction Code of Australia: Volume One Amendment 1". Australian Building Codes Board.

Clark D and Leonard M (2014). "Regional variations in neotectonic fault behaviour in Australia, as they pertain to the seismic hazard in capital cities". Australian Earthquake Engineering Society 2014 Conference, Lorne, Victoria.

Clark D and Allen T (2018). "What have we learnt of cratonic earthquakes in the fifty years since Meckering?". Australian Earthquake Engineering Society 2018 Conference, Perth, Western Australia.

Clark D, Brennand S, Brenn G, Allen TI, Garthwaite MC and Standen S (2019). "Surface deformation relating to the 2018 Lake Muir earthquake sequence, south west Western Australia: insights into the behaviour of Australian SCR earthquakes". Solid Earth, doi: 10.5194/se-2019-125. DOI:

Griffin J, Volti T, Clark D and Ghasemi H, Leonard M, Allen T (2016). "Development of the 2018 Australian National Seismic Hazard Assessment (NSHA)". Australian Earthquake Engineering Society 2016 Conference, Melbourne, Victoria.

Somerville, Quijada P, Thio HK, Sandiford M and Quigley M (2008). "Contribution of identified active faults to near fault seismic hazard in the Flinders Ranges". Australian Earthquake Engineering 2008 Conference, Ballarat, Victoria.

Clark D, McPherson A and Van Dissen R (2012). "Long-term behaviour of Australian stable continental region (SCR) faults". Tectonophys., 566-567: 1-30, doi: 10.1016/j.tecto.2012.07.004. DOI:

Clark D, McPherson A, Cupper M, Collins CDN and Nelson G (2015). "The Cadell Fault, southeastern Australia: a record of temporally clustered morphogenic seismicity in a low-strain intraplate region". in: A. Landgraf, S. Kübler, E. Hintersberger, S. Stein (Eds.) Seismicity, fault rupture and earthquake hazards in slowly deforming regions, Geological Society, London, Special Publications, 163-185, doi: 10.1144/SP432.2. DOI:

Griffin JD, Stirling MW, Wang T and Clark D (2019). "Towards time-dependent modelling of episodic earthquake occurrence on intraplate faults". Seism. Res. Lett., 90(2B): 895-896.

Taylor-Silva BI, Stirling MW, Litchfield NJ, Griffin JD, van den Berg EJ and Wang N (2019). "Paleoseismology of the Akatore Fault, Otago, New Zealand". New Zeal. J. Geol. Geop., doi: 10.1080/00288306.2019.1645706. DOI:

Leonard M (2008). "One hundred years of earthquake recording in Australia". Bull. Seism. Soc. Am., 98(3): 1458–1470, doi: 10.1785/0120050193. DOI:

Griffin J, Weatherill G and Allen T (2017). "Performance of national scale smoothed seismicity estimates of earthquake activity rates". Australian Earthquake Engineering Society 2017 Conference, Canberra, ACT.

Richter CF (1935). "An instrumental earthquake magnitude scale". Bull. Seism. Soc. Am., 25(1): 1-32.

Michael-Leiba M and Malafant K (1992). "A new local magnitude scale for southeastern Australia". BMR J. Aust. Geol. Geophys., 13(3): 201-205.

Allen TI (2010). "The influence of attenuation in earthquake ground-motion and magnitude estimation: implications for Australian earthquake hazard". Australian Earthquake Engineering Society 2010 Conference, Perth, Western Australia.

Allen TI, Leonard M, Ghasemi H and Gibson G (2018). "The 2018 National Seismic Hazard Assessment for Australia: earthquake epicentre catalogue". Geoscience Australia Record 2018/30, Canberra, pp. 51, doi: 10.11636/Record.2018.030. DOI:

Griffin J and Davies G (2018). "Earthquake sources of the Australian plate margin: revised models for the 2018 national tsunami and earthquake hazard assessments". Geoscience Australia Record 2018/31, Canberra, pp. 37, doi: 10.11636/Record.2018.031. DOI:

Bommer JJ and Abrahamson NA (2006). "Why do modern probabilistic seismic-hazard analyses often lead to increased hazard estimates?". Bull. Seism. Soc. Am., 96(6): 1967–1977, doi: 10.1785/0120060043. DOI:

Al Atik L, Abrahamson N, Bommer JJ, Scherbaum F, Cotton F and Kuehn N (2010). "The variability of ground-motion prediction models and its components". Seism. Res. Lett., 81(5): 794-801, doi: 10.1785/gssrl.81.5.794. DOI:

Atkinson GM and Boore DM (2006). "Earthquake ground-motion prediction equations for eastern North America". Bull. Seism. Soc. Am., 96: 2181-2205, doi: 10.1785/0120050245. DOI:

Liang JZ, Hao H, Gaull BA and Sinadinovski C (2008). "Estimation of strong ground motions in southwest Western Australia with a combined Green's function and stochastic approach". J. Earthq. Eng., 12(3): 382–405, doi: 10.1080/13632460701568607. DOI:

Allen TI (2012). "Stochastic ground-motion prediction equations for southeastern Australian earthquakes using updated source and attenuation parameters". Geoscience Australia Record 2012/69, Canberra, pp. 55.

Somerville P, Graves R, Collins N, Song S-G, Ni S and Cummins P (2009). "Source and ground motion models for Australian earthquakes". Australian Earthquake Engineering Society 2009 Conference, Newcastle, New South Wales.

Allen TI, Cummins PR, Dhu T and Schneider JF (2007). "Attenuation of ground-motion spectral amplitudes in southeastern Australia". Bull. Seism. Soc. Am., 97(4): 1279–1292, doi: 10.1785/0120060172. DOI:

Douglas J (2018). "Ground motion prediction equations 1964-2018". Department of Civil and Environmental Engineering, University of Strathclyde July 2018, pp. 624.

Goulet C, Bozorgnia Y, Abrahamson N, Kuehn N, Al Atik L, Youngs R, Graves R and Atkinson G (2018). "Central and eastern North America ground-motion characterization: NGA-East final report". Pacific Earthquake Engineering Research Center PEER Report No. 2018/08, University of California, Berkeley, California.

Bakun WH and McGarr A (2002). "Differences in attenuation among the stable continental regions". Geophys. Res. Lett., 29(23): 2121, doi:2110.1029/2002GL015457.

Allen TI and Atkinson GM (2007). "Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia". Bull. Seism. Soc. Am., 97(4): 1350–1354, doi: 10.1785/0120060206 DOI:

Scherbaum F, Delavaud E and Riggelsen C (2009). "Model selection in seismic hazard analysis: an information-theoretic perspective". Bull. Seism. Soc. Am., 99(6): 3234–3247, doi: 10.1785/0120080347. DOI:

Somerville P and Ni S (2010). "Contrast in seismic wave propagation and ground motion models between cratonic and other regions of Australia". Australian Earthquake Engineering Society 2010 Conference, Perth, Western Australia.

Drummond BJ, Goleby BR and Swager CP (2000). "Crustal signature of Late Archaean tectonic episodes in the Yilgarn craton, Western Australia: evidence from deep seismic sounding". Tectonophys., 329: 193-221.

Denham D, Alexander LG and Worotnicki G (1980). "The stress field near the sites of the Meckering (1968) and Calingiri (1970) earthquakes, Western Australia". Tectonophys., 67: 283-317.

Hearn SJ and Webb JP (1984). "Continental-scale felt effects of the large Banda Sea earthquake of 4 November 1963". Bull. Seism. Soc. Am., 74(1): 349-351.

McCue K (2013). "Darwin Northern Territory – an earthquake hazard". Australian Earthquake Engineering Society 2013 Conference, Hobart, Tasmania.

Ghofrani H and Atkinson GM (2011). "Forearc versus backarc attenuation of earthquake ground motion". Bull. Seism. Soc. Am., 101(6): 3032–3045, doi: 10.1785/0120110067. DOI:

Fishwick S, Kennett BLN and Reading AM (2005). "Contrasts in lithospheric structure within the Australian craton—insights from surface wave tomography". Earth Planet. Sci. Lett., 231: 163– 176, doi: 10.1016/j.epsl.2005.01.009. DOI:

Wei Z, Kennett BLN and Zhao L-F (2017). "Lg-wave attenuation in the Australian crust". Tectonophys., 717: 413-424, doi: 10.1016/j.tecto.2017.08.022. DOI:

Kennett BLN and Furumura T (2008). "Stochastic waveguide in the lithosphere: Indonesian subduction zone to Australian craton". Geophys. J. Int., 172: 363–382, doi: 10.1111/j.1365-246X.2007.03647.x. DOI:

Allen T, Clark D, Lawrie S, Brenn G, Dimech J, Garthwaite M, Glanville H, Kemp T, Lintvelt C, Lumley D, Pejic T, Sayin E and Standen S (2019). "The 2018 Lake Muir earthquakes: Australia’s ninth surface rupturing earthquake sequence in 50 years". Seism. Res. Lett., 90(2B): 951.

Van Houtte C, Bannister S, Holden C, Bourguignon S and McVerry G (2017). "The New Zealand Strong Motion Database". Bull. New Zeal. Soc. Earthq. Eng., 50(1): 1-20, doi: 10.5459/bnzsee.50.1.1-20. DOI:

Kaiser A, Van Houtte C, Perrin N, Wotherspoon L and McVerry G (2017). "Site characterisation of GeoNet stations for the New Zealand Strong Motion Database". Bull. New Zeal. Soc. Earthq. Eng., 50(1): 39-49, doi: 10.5459/bnzsee.50.1.39-49 DOI:

Bommer JJ (2012). "Challenges of building logic trees for probabilistic seismic hazard analysis". Earthq. Spectra, 28(4): 1723-1735, doi: 10.1193/1.4000079. DOI:

Leonard M, Burbidge DR, Allen TI, Robinson DJ, McPherson A, Clark D and Collins CDN (2014). "The challenges of probabilistic seismic-hazard assessment in stable continental interiors: an Australian example". Bull. Seism. Soc. Am., 104(6): 3008-3028, doi: 10.1785/0120130248. DOI:

Frankel A (1995). "Mapping seismic hazard in the central and eastern United States". Seism. Res. Lett., 66(4): 8-21, doi: 10.1785/gssrl.66.4.8. DOI:

Clark D, Leonard M, Griffin J, Stirling M and Volti T (2016). "Incorporating fault sources into the Australian National Seismic Hazard Assessment (NSHA) 2018". Australian Earthquake Engineering Society 2016 Conference, Melbourne, Victoria.

Allen T, Griffin J and Clark D (2018). "The 2018 National Seismic Hazard Assessment for Australia: model input files". Geoscience Australia Record 2018/32, Canberra, pp. 32, doi: 10.11636/Record.2018.032. DOI:

Quigley MC, Cupper ML and Sandiford M (2006). "Quaternary faults of south-central Australia: palaeoseismicity, slip rates and origin". Aust. J. Earth. Sci., 53: 285 – 301, doi: 10.1080/08120090500499271. DOI:

Clark D, McPherson A and Collins CDN (2011). "Australia’s seismogenic neotectonic record: a case for heterogeneous intraplate deformation". Geoscience Australia Record 2011/11, Canberra.

Griffin J, Gerstenberger M, Allen T, Clark D, Cummins P, Cuthbertson R, Dimas V-A, Gibson G, Ghasemi H, Hoult R, Lam N, Leonard M, Mote T, Quigley M, Somerville P, Sinadinovski C, Stirling M and Venkatesan S (2018). "Expert elicitation of model parameters for the 2018 National Seismic Hazard Assessment: Summary of workshop, methodology and outcomes". Geoscience Australia Record 2018/28, Canberra, pp. 74, doi: 10.11636/Record.2018.028. DOI:

Griffin JD, Allen TI and Gerstenberger MC (2020). "Seismic hazard assessment in Australia: can structured expert elicitation achieve consensus in the ‘land of the fair go’?". Seism. Res. Lett., doi: 10.1785/0220190186. DOI:

Leonard M, McPherson A and Clark D (2012). "Source zonation". in: D.R. Burbidge (Ed.) The 2012 Australian Earthquake Hazard Map, 27-43.

Jones TD, Gibson G, McCue KF, Denham D, Gregson PJ and Bowman JR (1991). "Three large intraplate earthquakes near Tennant Creek, Northern Territory, on 22 January 1988". BMR J. Aust. Geol. Geophys., 12: 339-343.

Woessner J, Danciu L, Giardini D, Crowley H, Cotton F, Grünthal G, Valensise G, Arvidsson R, Basili R, Betül Demircioglu M, Hiemer S, Meletti C, Musson RW, Rovida AN, Sesetyan K, Stucchi M and The SHARE Consortium (2015). "The 2013 European Seismic Hazard Model: key components and results". Bull. Earthq. Eng., 13(12): 3553–3596, doi: 10.1007/s10518-015-9795-1. DOI:

Standards Australia (2018). "Structural design actions, part 4: Earthquake actions in Australia". Standards Australia AS 1170.4-2007 (R2018)/Amdt 2-2018, Sydney, NSW.

McCue K (compiler), Gibson G, Michael-Leiba M, Love D, Cuthbertson R, Horoschun G (1993). "Earthquake Hazard Map of Australia – 1991". Australian Geological Survey Organisation, Canberra.

Van Houtte C and Abbott E (2019). "OpenQuake implementation of the Canterbury Seismic Hazard Model". Seism. Res. Lett., 90(6): 2227-2235, doi: 10.1785/0220190100. DOI:

Stirling M, McVerry G, Gerstenberger M, Litchfield N, Van Dissen R, Berryman K, Barnes P, Wallace L, Villamor P, Langridge R, Lamarche G, Nodder S, Reyners M, Bradley B, Rhoades D, Smith W, Nicol A, Pettinga J, Clark K and Jacobs K (2012). "National Seismic Hazard Model for New Zealand: 2010 update". Bull. Seism. Soc. Am., 102(4): 1514–1542, doi: 10.1785/0120110170. DOI:

Leyendecker EV, Hunt RJ, Frankel AD and Rukstales KS (2000). "Development of maximum considered earthquake ground motion maps". Earthq. Spectra, 16(1): 21-40, doi: 10.1193/1.1586081. DOI:

Standards New Zealand (2004). "Structural design actions, part 5: Earthquake actions – New Zealand". Standards New Zealand NZS 1170.5:2004, Wellington, NZ, pp. 76.

McVerry GH (2003). "From hazard maps to code spectra for New Zealand". 2003 Pacific Conference on Earthquake Engineering, Christchurch, Paper Number 034.

Burbidge DR (2012). "The 2012 Australian Earthquake Hazard Map". in, Geoscience Australia Record 2012/71, pp. 116.

Leonard M, Burbidge D and Edwards M (2013). "Atlas of seismic hazard maps of Australia: seismic hazard maps, hazard curves and hazard spectra". Geoscience Australia Record 2013/41, pp. 39.

Nordenson GJP and Bell GR (2000). "Seismic design requirements for regions of moderate seismicity". Earthq. Spectra, 16(1): 205-225, doi: 10.1193/1.1586091. DOI:

Bradley BA (2015). "Benefits of site-specific hazard analyses for seismic design in New Zealand". Bull. New Zeal. Soc. Earthq. Eng., 48(2): 92-99, doi: 10.5459/bnzsee.48.2.92-99 DOI:

Lam NTK and Wilson JL (2008). "The new response spectrum model for Australia". Electron. J. Struct. Eng., 8: Special Issue: Earthquake Engineering in the low and moderate seismic regions of Southeast Asia and Australia, 6-24.

Bommer JJ and Pinho R (2006). "Adapting earthquake actions in Eurocode 8 for performance-based seismic design". Earthq. Eng. Struct. D., 35: 39-55, doi: 10.1002/eqe.530. DOI:

Chandler AM, Lam NTK, Wilson JL and Hutchinson GL (2001). "Response spectrum modelling for regions lacking earthquake records". Electron. J. Struct. Eng., 1(1): 2-14.

McGuire RK (1977). "Seismic design spectra and mapping procedures using hazard analysis based directly on oscillator response". Earthq. Eng. Struct. D., 5(3): 211–234, doi: 10.1002/eqe.4290050302. DOI:

CSA Group (2014). "Canadian Highway Bridge Design Code". Canadian Standards Association CSA S6-14, pp. 894.

Saroukos R (2019). "Insurance claims roll in after 7.2 magnitude earthquake as damage to Darwin homes revealed". NT News, Published 25 June 2019, Retrieved 19 August 2019, from

Harmsen S and Frankel A (2001). "Geographic deaggregation of seismic hazard in the United States". Bull. Seism. Soc. Am., 91(1): 13–26, doi: 10.1785/0120000007. DOI:

Luco N, Bachman RE, Crouse CB, Harris JR, Hooper JD, Kircher CA, Caldwell PJ and Rukstales KS (2015). "Updates to building-code maps for the 2015 NEHRP Recommended Seismic Provisions". Earthq. Spectra, 31(S1): S245-S271, doi: 10.1193/042015EQS058M. DOI:

Kircher CA (2017). "New site-specific ground motion requirements of ASCE 7-16". 2017 SEAOC Convention, San Diego, CA.

Halchuk S, Adams J and Allen TI (2016). "Fifth Generation Seismic Hazard Model for Canada: crustal, in-slab, and interface hazard values for southwestern Canada". Geological Survey of Canada Open File 8090, pp. 19, doi: 10.4095/299244. DOI:

Petersen MD, Shumway AM, Powers PM, Mueller CS, Moschetti MP, Frankel AD, Rezaeian S, McNamara DE, Luco N, Boyd OS, Rukstales KS, Jaiswal KS, Thompson EM, Hoover SM, Clayton BS, Field EH and Zeng Y (2019). "The 2018 update of the US National Seismic Hazard Model: overview of model and implications". Earthq. Spectra: doi: 10.1177/8755293019878199. DOI:

Building Seismic Safety Council (2004). "NEHRP Recommended Provisions for seismic regulations for new buildings and other structures, 2003 edition". Federal Emergency Management Agency 450, Washington, D.C., pp. 338.

Borcherdt RD (1994). "Estimates of site-dependent response spectra for design (methodology and justification)". Earthq. Spectra, 10(4): 617-653, doi: 10.1193/1.1585791. DOI:

Seyhan E and Stewart JP (2014). "Semi-empirical nonlinear site amplification from NGA-West 2 data and simulations". Earthq. Spectra, 30(3): 1241–1256, doi: 10.1193/063013EQS181M. DOI:

Dowling J, Finn WDL, Ventura CE, Bebamzadeh A and Fairhurst M (2016). "An alternative approach to site factors for NBCC 2015". Can. J. Civ. Eng., 43: 1017–1024, doi: 10.1139/cjce-2015-05.

Kolaj M, Allen T, Mayfield R, Adams J and Halchuk S (2019). "Ground-motion models for the 6th Generation Seismic Hazard Model of Canada". 12th Canadian Conference on Earthquake Engineering, Québec City, Québec, Paper 192-hHtH-159.

Adams J, Allen T, Halchuk S and Kolaj M (2019). "Canada's 6th Generation Seismic Hazard Model, as prepared for the 2020 National Building Code of Canada". 12th Canadian Conference on Earthquake Engineering, Québec City, Québec., Paper 192-Mkvp-139.

Castellaro S, Mulargia F and Rossi PL (2008). "Vs30: proxy for seismic amplification?". Seism. Res. Lett., 79(4): 540-543, doi: 10.1785/gssrl.79.4.540. DOI:

Hassani B and Atkinson GM (2016). "Applicability of the NGA-West2 site-effects model for Central and Eastern North America". Bull. Seism. Soc. Am., 106(3): 1331–1341, doi: 10.1785/0120150321. DOI:

Bradley BA (2013). "A New Zealand-specific pseudospectral acceleration ground-motion prediction equation for active shallow crustal earthquakes based on foreign models". Bull. Seism. Soc. Am., 103(3): 1801–1822, doi: 10.1785/0120120021. DOI:

Chiou BS-J and Youngs RR (2008). "An NGA model for the average horizontal component of peak ground motion and response spectra". Earthq. Spectra, 24(1): 173–215, doi: 10.1193/1.2894832. DOI:

Algermissen ST and Perkins DM (1976). "A probabilistic estimate of maximum accelerations in rock in the contiguous United States". US Geological Survey Open-File Report 76-416. DOI:

Standards Australia (1993). "Structural design actions, part 4: Earthquake actions in Australia". Standards Australia AS 1170.4–1993, Homebush, NSW.

Hanks TC, Beroza GC and Toda S (2012). "Have recent earthquakes exposed flaws in or misunderstandings of probabilistic seismic hazard analysis?". Seism. Res. Lett., 83(5): 759-764, doi: 10.1785/0220120043. DOI:

Ward SN (1995). "Area-based tests of long-term seismic hazard". Bull. Seism. Soc. Am., 85(5): 1285-1298.

Allen TI, Wald DJ, Earle PS, Marano KD, Hotovec AJ, Lin K and Hearne M (2009). "An Atlas of ShakeMaps and population exposure catalog for earthquake loss modeling". Bull. Earthq. Eng., 7(3): 701-718, doi: 10.1007/s10518-009-9120-y. DOI:

Wilson JL, Lam NTK and Pham L (2008). "Development of the New Australian Earthquake Loading Standard". EJSE Special Issue, Earthquake Engineering in the low and moderate seismic regions of Southeast Asia and Australia (2008): 25-31.

Federal Emergency Management Agency (2004). "NEHRP Recommended Provisions for seismic regulations for new buildings and other structures, Part 2: Commentary". Federal Emergency Management Agency 450-2 / 2003 Edition, Washington, D.C., pp. 385.

Heidebrecht AC (2003). "Overview of seismic provisions of the proposed 2005 edition of the National Building Code of Canada". Can. J. Civ. Eng., 30(2): 241-254, doi: 10.1139/l02-068. DOI:

Stein S, Tomasello J and Newman A (2003). "Should Memphis build for California’s earthquakes?". EOS, 84(19): 184–185, doi: 10.1029/2003EO190002. DOI:

Searer GR, Freeman SA and Paret TF (2007). "Does it make sense from engineering and economic perspectives to design for a 2475-year earthquake?". in: S. Stein, S. Mazzotti (Eds.) Continental intraplate earthquakes: science, hazard, and policy issues, The Geological Society of America, Boulder, CO, 353-361.

Allen TI and Luco N (2018). "Opportunities to enhance seismic demand parameters for future editions of the AS1170.4". Australian Earthquake Engineering Society 2018 Conference, Perth, Western Australia.

Frankel A, McGarr A, Bicknell J, Mori J, Seeber L and Cranswick E (1990). "Attenuation of high-frequency shear waves in the crust: measurements from New York State, South Africa, and southern California". J. Geophys. Res., 95(B11): 17441-17457, doi: 10.1029/JB095iB11p17441. DOI:

Porter KA (2016). "Safe enough? A building code to protect our cities and our lives". Earthq. Spectra, 32(2): 677-695, doi: 10.1193/112213EQS286M. DOI:

Bairoch P and Goertz G (1986). "Factors of urbanisation in the nineteenth century developed countries: a descriptive and econometric analysis". Urban Stud., 23(4): 285-305, doi: 10.1080/00420988620080351. DOI:

Humar J (2015). "Background to some of the seismic design provisions of the 2015 National Building Code of Canada". Can. J. Civ. Eng., 42: 940–952, doi: 10.1139/cjce-2014-0385. DOI:

Douglas J, Ulrich T and Negulescu C (2013). "Risk-targeted seismic design maps for mainland France". Nat. Hazards, 65: 1999–2013, doi: 10.1007/s11069-012-0460-6. DOI:

Silva V, Crowley H and Bazzurro P (2016). "Exploring risk-targeted hazard maps for Europe". Earthq. Spectra, 32(2): 1165-1186, doi: 10.1193/112514EQS198M. DOI:

Malhotra PK (2005). "Return period of design ground motions". Seism. Res. Lett., 76(6): 693-699, doi: 10.1785/gssrl.76.6.693. DOI:

Luco N, Ellingwood BR, Hamburger RO, Hooper JD, Kimball JK and Kircher CA (2007). "Risk-targeted versus current seismic design maps for the conterminous United States". SEAOC 2007, Squaw Creek, California.

Frankel A (2013). "Comment on “Why earthquake hazard maps often fail and what to do about it” by S. Stein, R. Geller, and M. Liu". Tectonophys.: doi: 10.1016/j.tecto.2012.1011.1032.

Adams J (2019). "A 65-year history of seismic hazard estimates in Canada". 12th Canadian Conference on Earthquake Engineering, Québec City, Québec., Paper 192-cSSQ-149.

Tsang H-H, Daniell JE, Wenzel F and Wilson JL (2019). "A universal approach for evaluating earthquake safety level based on societal fatality risk". Bull. Earthq. Eng., doi: 10.1007/s10518-019-00727-9. DOI:

Kulkarni RB, Youngs RR and Coppersmith KJ (1984). "Assessment of confidence intervals for results of seismic hazard analysis". 8th World Conference on Earthquake Engineering, San Francisco, California, 263–270.

Douglas J, Ulrich T, Bertil D and Rey J (2014). "Comparison of the ranges of uncertainty captured in different seismic-hazard studies". Seism. Res. Lett., 85(5): 977-985, doi: 10.1785/0220140084. DOI:

Stein S, Geller RJ and Liu M (2012). "Why earthquake hazard maps often fail and what to do about it". Tectonophys., 562-563: 1-25, doi: 10.1016/j.tecto.2012.06.047. DOI:

How to Cite
Allen, T. I. (2020). Seismic hazard estimation in stable continental regions. Bulletin of the New Zealand Society for Earthquake Engineering, 53(1), 22-36.