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Images for February 2011; more images...

Videos, UC QuakeStudies

A video of Principal Richard Patton announcing to staff and students that Chisnallwood Intermediate is to remain open. Chisnallwood is one of thirteen schools which the Ministry of Education planned to close after the 22 February 2011 earthquake.

Images, UC QuakeStudies

A sign and basket of flowers for the River of Flowers event held in Riccarton Bush, commemorating the second anniversary of the 22 February earthquake. The sign reads "In memory of those we lost, Feb 22nd 2011, River of Flowers".

Images, UC QuakeStudies

People gather beside the Avon River in Riccarton Bush for the River of Flowers event, commemorating the second anniversary of the 22 February earthquake. A sign reads "In memory of those we lost, Feb 22nd 2011, River of Flowers".

Images, eqnz.chch.2010

Prior to the earthquakes (mainly the February 22 2011 event) this park bench was at track level. Shortly after the February quake someone in the council did the sums and realised that the area near the Avon River had dropped between a metre and 1.4m (about 4 foot), so a rush job by contractors shifted in many tonnes of rock and gravel to raise a...

Images, UC QuakeStudies

A photograph of the lens of the Townsend Telescope. The lens is the most crucial component of the telescope. Despite damage to the surrounding parts, the lens was unharmed during the 22 February 2011 earthquake. Because of this, the telescope can be restored.

Images, Alexander Turnbull Library

A bus tours a city street with destroyed schools either side. The guide points out destruction on the right from earthquakes and on the left from Hekia Parata. Wider context is the ongoing impact of the Christchurch February 2011 earthquake. The implication is that the earthquake caused physical damage to some schools and that the Minister for Education is responsible for destroying others with her announcement of school closures in Christchurch on 18 February 2013. Quantity: 1 digital cartoon(s).

Research papers, University of Canterbury Library

This poster provides a comparison between the strong ground motions observed in the 22 February 2011 Mw6.3 Christchurch earthquake with those observed in Tokyo during the 11 March 2011 Mw9.0 Tohoku earthquake. The destuction resulting from both of these events has been well documented, although tsunami was the principal cause of damage in the latter event, and less attention has been devoted to the impact of earthquake-induced ground motions. Despite Tokyo being located over 100km from the nearest part of the causative rupture, the ground motions observed from the Tohoku earthquake were significant enough to cause structural damage and also significant liquefaction to loose reclaimed soils in Tokyo Bay. The author was fortunate enough (from the perspective of an earthquake engineer) to experience first-hand both of these events. Following the Tohoku event, the athor conducted various ground motion analyses and reconniassance of the Urayasu region in Tokyo Bay affected by liquefaction in collaboration with Prof. Kenji Ishihara. This conference is therefore a fitting opportunity in which to discuss some of authors insights obtained as a result of this first hand knowledge. Figure 1 illustrates the ground motions recorded in the Christchurch CBD in the 22 February 2011 and 4 September 2010 earthquakes, with that recorded in Tokyo Bay in the 11 March 2011 Tohoku earthquake. It is evident that these three ground motions vary widely in their amplitude and duration. The CBGS ground motion from the 22 February 2011 event has a very large amplitude (nearly 0.6g) and short duration (approx. 10s of intense shaking), as a result of the causal Mw6.3 rupture at short distance (Rrup=4km). The CBGS ground motion from the 4 September 2010 earthquake has a longer duration (approx. 30s of intense shaking), but reduced acceleration amplitude, as a result of the causal Mw7.1 rupture at a short-to-moderate distance (Rrup=14km). Finally, the Urayasu ground motion in Tokyo bay during the 11 March 2011 Tohoku earthquake exhibits an acceleration amplitude similar to the 4 September 2010 CBGS ground motion, but a significantly larger duration (approx 150s of intense shaking). Clearly, these three different ground motions will affect structures and soils in different ways depending on the vibration characteristics of the structures/soil, and the potential for strength and stiffness degradation due to cumulative effects. Figure 2 provides a comparison between the arias intensities of the several ground motion records from the three different events. It can be seen that the arias intensities of the ground motions in the Christchurch CBD from the 22 February 2011 earthquake (which is on average AI=2.5m/s) is approximately twice that from the 4 September 2010 earthquake (average AI≈1.25). This is consistent with a factor of approximately 1.6 obtained by Cubrinovski et al. (2011) using the stress-based (i.e.PGA-MSF) approach of liquefaction triggering. It can also be seen that the arias intensity of the ground motions recorded in Tokyo during the 2011 Tohoku earthquake are larger than ground motions in the Christchurch CBD from the 4 September 2011 earthquake, but smaller than those of the 22 February 2011 earthquake. Based on the arias intensity liquefaction triggering approach it can therefore be concluded that the ground motion severity, in terms of liquefaction potential, for the Tokyo ground motions is between those ground motions in Christchurch CBD from the 4 September 2010 and 22 February 2011 events.

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 showing the Godley Head Lighthouse and cliffs. Taken from the entrance to Lyttelton Harbour looking north. The Godley Head Lighthouse (K4286) was discontinued on 6 July 2012. Volcanic banding is visible in the face of the cliffs. There were several major rock falls along the coastal ...

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 showing the southern cliffs of Godley Head, taken from the middle of the shipping channel. Some earthquake damage to the cliffs is visible. There were several major rock falls along the coastal cliffs near Christchurch and Lyttelton Harbour. At Godley Head these caused damage to the ...

Images, Canterbury Museum

One landscape colour digital photograph taken on 27 May 2013 of London Street in Lyttelton. Taken from Sumner Road looking west across the intersection of London and Oxford Streets. The photograph shows several empty sections and the remaining buildings. The Lyttelton streetscape has changed dramatically from its pre-earthquake appearance and w...

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 off Godley Head looking west towards the face of the cliffs. Rock which fell from the cliffs is heaped at the waters edge. Some of the buildings from the coastal defence battery are visible on top of the cliff. Volcanic banding is visible in the face of the cliffs. There were severa...

Images, Canterbury Museum

One landscape colour digital photograph taken on 27 May 2013 of a retaining wall in Sumner Road which was replaced due to earthquake damage. The original wall was created using red volcanic rock. Many walls like this were built using the Hard Labour Gang from the Lyttelton Gaol. The replacement wall has a small section of stone installed to sho...

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 of London Street, Lyttelton. The photograph was taken from St Davids Street looking west. The roofs of the portable buildings forming the temporary Lyttelton Police station are visible in the foreground. The Lyttelton Port Company offices and Tunnel Portal are prominent in the midgrou...

Images, Canterbury Museum

One landscape colour digital photograph taken on 27 May 2013 of a retaining wall in Sumner Road which was replaced due to earthquake damage. The original wall was created using red volcanic rock. Many walls like this were built using the Hard Labour Gang from the Lyttelton Gaol. The replacement wall has a small section of stone installed to sho...

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 on Winchester Street, Lyttelton. The photograph shows part of the rear windscreen of a blue car with a sticker which reads 'I don't need sex EQC is screwing me'. The right side of the sticker is torn leaving a jagged edge. The process of negotiation with EQC and insurance companies to...

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 on the corner of Norwich Quay and Canterbury Street, Lyttelton. The photograph shows the sites of the Royal Hotel, Shadbolt House, and the Lyttelton Hotel along Norwich Quay. The Wunderbar and the repair and strengthening work underway on the Lyttelton Working Mens Club/The Loons are v...

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 off Godley Head looking north to Boulder Bay and Taylors Mistake. Rock which fell from the cliffs is heaped at the waters edge. Volcanic banding is visible in the face of the cliffs. There were several major rock falls along the coastal cliffs near Christchurch and Lyttelton Harbour....

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 on Winchester Street, Lyttelton. The photograph is taken looking south from the site of the Catholic Church of St Joseph the Worker to the site of the Anglican Church of the Most Holy Trinity. Visible are the removed top of the bell tower and porch. The damaged vicarage is at the weste...

Images, Canterbury Museum

One landscape colour digital photograph taken on 26 May 2013 off Godley Head looking north towards Sumner Head. There were several major rock falls along the coastal cliffs near Christchurch and Lyttelton Harbour. In and around the suburb of Sumner some of these falls necessitated the abandonment of houses in areas where cliffs had given way or...

Images, UC QuakeStudies

Food cabinets in Man's Bakery and Cafe on Hereford Street. Food abandoned on 22 February 2011 can still be seen inside. The photographer comments, "It's a bit scary how fresh those biscuits still look - says something about the amount of preservatives we put in our food".

Videos, UC QuakeStudies

A video of an interview with Mark Forster, Operations Manager of the Christchurch Gondola, about the revamp of the gondola. The attraction has been closed since 22 February 2011 while the café and restaurant is being renovated and the rock fall from the hill above mitigated.

Images, UC QuakeStudies

Food cabinets in Man's Bakery and Cafe on Hereford Street. Food abandoned on 22 February 2011 can still be seen inside. The photographer comments, "It's a bit scary how fresh those biscuits still look - says something about the amount of preservatives we put in our food".

Images, UC QuakeStudies

A photograph of Donna Allfrey's dog Niko, sitting on the front porch of her house on Oxford Terrace. The photographer comments, "Niko found Doug Sexton, Allfrey's neighbour, after the 22 February 2011 earthquake. Sexton had a heart attack during the earthquake and could not leave his damaged house".

Images, eqnz.chch.2010

Awaiting the demolition ball! See the hole punched in by the neighbouring building (now demolished) during the February 22 2011 earthquake. This building is leaning to the north (left) while it's now demolished neighbour was leaning to the south (right). All because the crap land gave way underneath!