Tagged: liquefaction

The low down on liquefaction - Infrequently Asked Questions

Lynley Hargreaves Oct 22, 2014

Dr Brendon Bradley Since the Canterbury earthquakes, most of us are familiar with the effects of liquefaction – sand volcanoes, sunken buildings, and vast, vast quantities of mud. But scientists still don’t fully understand the interactions between the deep soft soils of the Canterbury basin and the shaking seen on the ground. Canterbury University’s Dr Brendon Bradley explains how … Read More

Alpine Fault 101: Getting acquainted with New Zealand’s greatest natural hazard - Shaken Not Stirred

Jesse Dykstra May 28, 2013

Modeled Earthquake Shaking Intensities for New Zealand. Zone of maximum shaking along Alpine Fault indicated by red band.Source: http://blog.teara.govt.nz The Alpine Fault will rupture in the near future (quite possibly in your lifetime), without any prior warning. When it does, the scale of the immediate disaster will be unprecedented in New Zealand, and secondary effects will probably continue … Read More

Cruel Irony in EQC Privacy Breach: information on 83,000 claimants leaked - Shaken Not Stirred

Jesse Dykstra Mar 27, 2013

As widely reported in the media yesterday, details of EQC claimants and claims have been leaked in a privacy breach that effects 83,000 Christchurch households. That’s details of every claim between $10-100k, arising from the 4 September 2010 and 22 February 2011 earthquakes. The leaked spreadsheet included details of EQC repair cost estimates and associated contractor quotes. If this information … Read More

E for Effort: The EQC Report Card (Part 2) - Shaken Not Stirred

Jesse Dykstra Aug 30, 2011

eqc.govt.nz How Has the EQC Performed Following the Canterbury Earthquakes? How would the EQC cope, when faced with the monumental task of managing nearly 400,000 claims from two major events in close succession? That was always going to be a tall order. Nearly one year on from the Greendale fault rupture, what can we say about the EQCs performance? Unsurprisingly, … Read More

Christchurch no More Risky than Wellington. But Does That Make a Good News Story? - Shaken Not Stirred

Jesse Dykstra Jun 01, 2011

Wellington Faults. Source: GNS Science CERA Meeting Scares Media Some media outlets have put a rather negative spin on GNS Science’s most recent earthquake forecast for the central Canterbury region, which was discussed at a recent meeting of the Canterbury Earthquake Recovery Authority (CERA). GNS’s latest forecasting model estimates the probability of a “large” (magnitude 6.0 to 6.9) event occurring … Read More

Boulevard of Broken Dreams — Kaiapoi, PtII - Shaken Not Stirred

Jesse Dykstra Oct 12, 2010

The Story of Kaiapoi (Continued) Photo: Jesse Dykstra On one particularly hard-hit Kaiapoi street, I spoke to a resident who expressed an increasingly sense of helplessness as aftershocks continued to tear his home apart. His family feared that they would be unable to live in their home for much longer.  Others in the neighborhood spoke of frustration that they had not yet received any … Read More

Boulevard of Broken Dreams – Kaiapoi, PtI - Shaken Not Stirred

Jesse Dykstra Oct 08, 2010

Not a Memory Yet Photo: Jesse Dykstra It has now been over 4 weeks since the Darfield earthquake rocked Canterbury, yet aftershocks continue to terrorize the region. Monday night, a magnitude 5 aftershock (the largest since Sept 8th) rattled Christchurch, and early this morning a magnitude 4.4 rumble served notice that the Greendale fault has not yet finished … Read More

Liquefaction Explained - Shaken Not Stirred

Jesse Dykstra Sep 08, 2010

For a nice overview of Liquefaction, and why certain areas of Canterbury were more affected by Saturday’s shaking  (Courtesy of 3news).  http://www.3news.co.nz/Liquefaction—a-scientific-explanation/tabid/309/articleID/174502/Default.aspx Also, this post from Visibly Shaken,  by Peter Griffin shows an infographic by ECan https://sciblogs.co.nz/visibly-shaken/2010/09/06/christchurchs-liquefaction-infographic/ And finally, also from Ecan, an excellent, detailed infographic on the liquefaction hazard in Canterbury, produced before Saturday’s earthquake: http://img.scoop.co.nz/media/pdfs/1009/Ecan_Brochure_Title__The_Q_files___the_solid_facts_on_Christchurch_liquefaction.PDF … Read More

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