In this paper, we perform hybrid broadband (0-10 Hz) ground motion simulations for the ten most significant events (Mw 4.7-7.1) in the 2010-2011 Canterbury earthquake sequence. Taking advantage of having repeated recordings at same stations, we validate our simulations using both recordings and an empirically-developed ground motion prediction equation (GMPE). The simulation clearly captures the sedimentary basin amplification and the rupture directivity effects. Quantitative comparisons of the simulations with both recordings and the GMPE, as well as analyses of the total residuals (indicating model bias) show that simulations perform better than the empirical GMPE, especially for long period. To scrutinize the ground motion variability, we partitioned the total residuals into different components. The total residual appears to be unbiased, and the use of a 3D velocity structure reduces the long period systematic bias particularly for stations located close to the Banks Peninsula volcanic area.
The cartoon shows the 'CCC Office' (Christchurch City Council) as a small ramshackle wooden building in a desert; bits of animal skeleton lie around and there are saguaro cactus and tumbleweed. A cowboy has arrived and asks 'So... Can I speak to the Deputy, Deputy, Deputy, Assistant Sheriff?' Context - A reference to layers of officialdom in Christchurch as the city struggles to rebuild itself as well as many councillors being away on holiday while the quake problems continue. Quantity: 1 digital cartoon(s).
Two people crawl across a desert littered with animal bones and skulls towards the words 'Land reports' in the distance. The woman says 'Don't get your hopes up! It's probably a mirage!' Context - On Thursday 23 June Prime Minister John Key, Canterbury Earthquake Recovery Minister Gerry Brownlee and representatives from engineering consultants Tonkin & Taylor announced the first part of the Government's long-awaited land report that revealed the fate of up to 5000 quake-damaged homes. Quantity: 1 digital cartoon(s).
The public policy think tank, the New Zealand Initiative, says this country is still under-prepared for the next big earthquake. The group of economists has reviewed the policy response to the Canterbury earthquakes and has just released its report: Recipe for disaster: Building policy on shaky ground. It says recovery from the quakes was hindered by avoidable policy mistakes that still haven't been addressed. One of the report's co authors Dr Eric Crampton joins Susie Ferguson to discuss the issues.
Shows a helicopter spray painting Christchurch with the Canterbury colours of black and red. Someone in the helicopter yells that 'it's gotta be better than tint of TC3'. Context: Probably refers to the apology by Earthquake Recovery Minister Gerry Brownlee for offending Christchurch's TC3 residents after saying he was 'sick and tired' of their moaning. TC3 means 'technical category 3'. Land classified TC3 is the mostly badly quake-damaged considered economically repairable. Quantity: 1 digital cartoon(s).
Kilmore St and Barbadoes St Intersection
Kilmore St and Barbadoes St Intersection
Kilmore St and Barbadoes St Intersection
Kilmore St and Barbadoes St Intersection
Kilmore St and Barbadoes St Intersection
Fitzgerald Ave
Kilmore St and Barbadoes St Intersection
Kilmore St and Barbadoes St Intersection
Kilmore St and Barbadoes St Intersection
Looking across the faultline where the Saturday 4 September 2010 magnitude 7.1 earthquake originated. Note how much the previously straight fence is now out of alignment.
Looking across the faultline where the Saturday 4 September 2010 magnitude 7.1 earthquake originated. Note how much the previously straight fence is now out of alignment.
Time is nearly up for owners of on-sold quake damaged properties in Canterbury to apply to claim money for botched repairs. The Government announced last year it would give an ex-gratia payment to home-owners with properties that went over the Earthquake Commission's then cap of $100,000. Today is the last day for applications after the original August deadline was extended due to Covid-19. But there are calls to extend that deadline again, as applications have flooded in over the past month.
Slipping of the tectonic plates caused tension cracks on this previously unknown faultline that runs through this paddock; magnitude 7.1 earthquake in mid-Canterbury on Saturday 4 September 2010.
Slipping of the tectonic plates caused tension cracks on this previously unknown faultline that runs through this paddock; magnitude 7.1 earthquake in mid-Canterbury on Saturday 4 September 2010.
This originally straight farm fence has been laterally displaced at least 2 metres where it crosses the previously unknown faultline from which the Saturday 4 September 2010 earthquake originated.
This originally straight farm fence has been laterally displaced at least 2 metres where it crosses the previously unknown Greendale Faultline from which the Saturday 4 September 2010 earthquake originated.
The faultline cuts across Telegraph Road, leaving a kink in its originally straight alignment; aftermath of the magnitude 7.1 earthquake in mid-Canterbury on Saturday 4 September 2010.
Slipping of the tectonic plates caused tension cracks on this previously unknown faultline that runs through this paddock; magnitude 7.1 earthquake in mid-Canterbury on Saturday 4 September 2010.
This originally straight farm fence has been laterally displaced at least 2 metres where it crosses the previously unknown faultline from which the Saturday 4 September 2010 earthquake originated.
This originally straight farm fence has been laterally displaced at least 2 metres where it crosses the previously unknown faultline from which the Saturday 4 September 2010 earthquake originated.
The faultline cuts across Telegraph Road, leaving a kink in its originally straight alignment; aftermath of the magnitude 7.1 earthquake in mid-Canterbury on Saturday 4 September 2010.
Slipping of the tectonic plates caused tension cracks on this previously unknown faultline that runs through this paddock; magnitude 7.1 earthquake in mid-Canterbury on Saturday 4 September 2010.
Slipping of the tectonic plates caused tension cracks on this previously unknown faultline that runs through this paddock; magnitude 7.1 earthquake in mid-Canterbury on Saturday 4 September 2010.
This originally straight farm fence has been laterally displaced at least 2 metres where it crosses the previously unknown faultline from which the Saturday 4 September 2010 earthquake originated.
This originally straight farm fence has been laterally displaced at least 2 metres where it crosses the previously unknown faultline from which the Saturday 4 September 2010 earthquake originated.