Dr Kelvin Berryman, Director Natural Hazards, GNS Science - presentation at Seismics and the City 2013
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"What's underneath? Understanding seismic science' - Christchurch 21 March 2013. View video at http://www.youtube.com/watch?v=KdxaPWQ1q5I
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Dr Kelvin Berryman, Director Natural Hazards, GNS Science - presentation at Seismics and the City 2013
- 1. What lies beneath: Making sense of the Canterbury Earthquake Sequence Kelvin Berryman, Director, Natural Hazards Research Platform 22 Feb, 2011 Seismics & the City, 2013 Natural Hazards Research Science GNS Platform
- 2. New Zealand tectonic Raukumara setting Peninsula CVR/TVZ North Island Dextral Fault Belt ea i at ng GPS strain u P l ura Marlborough k Hi strike-slip Chatham Rise Southern Alps Fiordland Image from NIWA National Institute of Water and Atmospheric Research Ltd Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 3. Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 4. Highfield Road, Sept 4th 2010 Quigley et al, UoC & GNS 4.5 m dextral & < 1 m vertical Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 5. Boxing Day and subsequent Chances of a M6+ in 1 year = This number was widely communicated but 25% in the aftershock region what did it mean – no scenario models in terms of impact were developed Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 6. Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 7. February and June fault slip inversions from GPS data – can also be compared with seismology and InSar Interpretation by Beaven et al., GNS Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 8. Reasons for very strong shaking in Christchurch weak sedimentary rocks, soft soils & high water table Christchurch volcanic rocks greywacke bedrock Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 9. Barnes et al, 2011 Regional Hikurangi Fault Subduction margin Patterns Wellington Christchurch Alpine Fault Jongens et al, 2012 Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 10. Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 11. Magnitude vs Time ( up to February 2013 ) Magnitude generally felt often not felt incomplete detection • More than 2 years of aftershocks have had major psycho-social impacts Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 12. Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 13. 6.5 Ka New Zealand Historical Atlas 1997 7 Ka 5 Ka 8 Ka 3 Ka 2 Ka 1 Ka Why is liquefaction such an issue in eastern Christchurch? Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 14. Subsurface conditions in central Christchurch are now well known and not especially difficult for rebuilding Seismics & the City, 2013 Natural Hazards Research Platform GNS Science
- 15. Questions ……………. Seismics & the City, 2013 Natural Hazards Research Platform GNS Science