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Images, eqnz.chch.2010

A few older Christchurch Earthquake Pics from after the 6.3 last Feb (2011). And yes the aftershocks are still happening.. Twitter | Facebook |

Images, eqnz.chch.2010

A few older Christchurch Earthquake Pics from after the 6.3 last Feb (2011). And yes the aftershocks are still happening.. Twitter | Facebook |

Images, eqnz.chch.2010

Steel frames are being used to shore the unstable facade of the St John the Baptist Church at Latimer Square while the building is being repaired and strengthened following the magnitude 7.1 earthquake that struck Christchurch on Saturday 4 September 2010.

Images, eqnz.chch.2010

Damage to the St John The Evangelist Catholic Church in Leeston suffered during the magnitude 7.1 earthquake that struck mid-Canterbury on Saturday 4 September 2010.

Images, eqnz.chch.2010

Hehehe ..... did the surveyors get the road setout wrong? This previously straight road is now kinked across this previously unknown faultline along which the Saturday 4 September 2010 magnitude 7.1 earthquake originated.

Images, eqnz.chch.2010

Hehehe ..... did the surveyors get the road setout wrong? This previously straight road is now kinked across this previously unknown faultline along which the Saturday 4 September 2010 magnitude 7.1 earthquake originated.

Images, eqnz.chch.2010

The farmers in this area swore that this road was straight when they were returning from the pub on Friday 3 September 2010, the night before the magnitude 7.1 earthquake struck.

Images, eqnz.chch.2010

The farmers in this area swore that this road was straight when they were returning from the pub on Friday 3 September 2010, the night before the magnitude 7.1 earthquake struck.

Articles, UC QuakeStudies

This report describes the earthquake hazard in Kaikoura district and gives details of historic earthquakes. It includes district-scale (1:250,000) active fault, ground shaking zone, liquefaction and landslide susceptibility maps. The report describes an earthquake scenario for a magnitude 7.0-7.3 Hope Fault earthquake near Kaikoura, and a subsequent local tsunami.

Images, eqnz.chch.2010

The St John The Evangelist Catholic Church in Leeston was cordoned off due to damage suffered during the magnitude 7.1 earthquake that struck mid-Canterbury on Saturday 4 September 2010.

Images, eqnz.chch.2010

The St John The Evangelist Catholic Church in Leeston was cordoned off due to damage suffered during the magnitude 7.1 earthquake that struck mid-Canterbury on Saturday 4 September 2010.

Images, eqnz.chch.2010

The farmer swore that his fence was erected in a straingt line, but mother nature had other ideas! Aftermath of the Saturday 4 September 2010 magnitude 7.1 earthquake at the previously unknown faultline along which the quake originated.

Images, eqnz.chch.2010

The farmer swore that his hedge was planted in a straingt line, but mother nature had other ideas! Aftermath of the Saturday 4 September 2010 magnitude 7.1 earthquake at the previously unknown faultline along which the quake originated.

Images, eqnz.chch.2010

The magnitude 7.1 earthquake that struck mid-Canterbury on Saturday 4 September 2010 broke the tip of the spire of the St John The Evangelist Catholic Church in Leeston

Images, eqnz.chch.2010

The farmer swore that his fence was erected in a straingt line, but mother nature had other ideas! Aftermath of the Saturday 4 September 2010 magnitude 7.1 earthquake at the previously unknown faultline along which the quake originated.

Images, UC QuakeStudies

Damage to a house in Richmond. The brick wall is badly cracked and twisted, and some bricks have fallen, exposing the lining paper and framing below. The driveway is cracked and covered in liquefaction. The photographer comments, "These photos show our old house in River Rd and recovery work around Richmond and St Albans. More shaking damage on the east wall of the living room at our house".

Images, UC QuakeStudies

Damage to a house in Richmond. The brick wall is badly cracked and twisted, and some bricks have fallen, exposing the lining paper and framing below. The driveway is cracked and covered in liquefaction. The photographer comments, "These photos show our old house in River Rd and recovery work around Richmond and St Albans. More shaking damage on the east wall of the living room at our house".

Images, eqnz.chch.2010

The farmer swore that his fence and hedge were in a straingt line, but mother nature had other ideas! Aftermath of the Saturday 4 September 2010 magnitude 7.1 earthquake at the previously unknown faultline along which the quake originated.

Images, eqnz.chch.2010

The ground slipped laterally at this previously unknown faultline across Highfield Road in mid-Canterbury, resulting in a relative displacement of at least 2 metres and the magnitude 7.1 earthquake on Saturday 4 September 2010. Note the now misaligned fence posts, hedge and road.

Images, eqnz.chch.2010

Cracks have ripped through external columns of this 7 storey building (corner of Hereford Street / Manchester Street), and efforts are being made to shore up and strengthen it to save it from demolition after it suffered structural damage in the magnitude 7.1 earthquake that struck Christchurch on Saturday 4 September 2010.

Images, eqnz.chch.2010

Cracks have ripped through external columns of this 7 storey building (corner of Hereford Street / Manchester Street), and efforts are being made to shore up and strengthen it to save it from demolition after it suffered structural damage in the magnitude 7.1 earthquake that struck Christchurch on Saturday 4 September 2010.

Images, eqnz.chch.2010

Cracks have ripped through external columns of this 7 storey building (corner of Hereford Street / Manchester Street), and efforts are being made to shore up and strengthen it to save it from demolition after it suffered structural damage in the magnitude 7.1 earthquake that struck Christchurch on Saturday 4 September 2010.

Images, Alexander Turnbull Library

The cartoon shows the leader of the new Mana Party, Hone Harawira, in four frames that illustrate 'The aftershock', 'the shake-up', 'the waiting & anxiety!...' and in the last frame 'the liquefaction...' as he sinks up to his chest in 'Poll Street'. Context - In fact Hone Harawira won the Te Tai Tokerau by-election with a majority of 1,117 votes, followed fairly closely by Kelvin Davis (Labour). The Labour and Mana candidates seemed to be neck and neck just before the election on 26 June 2011. The cartoon uses earthquake imagery to illustrate the emotional roller-coaster for Hone Harawira. Quantity: 1 digital cartoon(s).

Images, eqnz.chch.2010

This statue of the Virgin Mary stood in the south tower of The Cathedral of the Blessed Sacrament and had been facing inside from when she was placed there and through the September 2010 earthquake. That changed on February 22 2010 at 12.51pm when Christchurch was rocked by a 6.3 magnitude earthquake. During the violent shaking motion Mary was t...

Research papers, The University of Auckland Library

The Christchurch earthquakes have highlighted the importance of low-damage structural systems for minimising the economic impacts caused by destructive earthquakes. Post-tensioned precast concrete walls have been shown to provide superior seismic resistance to conventional concrete construction by minimising structural damage and residual drifts through the use of a controlled rocking mechanism. The structural response of unbonded post-tensioned precast concrete wall systems, with and without additional energy dissipating elements, were investigated by means of pseudo-static cyclic, snap back and forced vibration testing with shake table testing to be completed. Two types of post-tensioned rocking wall system were investigated; a single unbonded post-tensioned precast concrete wall or Single Rocking Wall (SRW) and a system consisting of a Precast Wall with End Columns (PreWEC). The equivalent viscous damping (EVD) was evaluated using both the pseudo-static cyclic and snap back test data for all wall configurations. The PreWEC configurations showed an increase in EVD during the snap back tests in comparison to the cyclic test response. In contrast the SRW showed lower EVD during the snap back tests in comparison to the SRW cyclic test response. Despite residual drifts measured during the pseudo-static cyclic tests, negligible residual drift was measured following the snap back tests, highlighting the dynamic shake-down that occurs during the free vibration decay. Overall, the experimental tests provided definitive examples of the behaviour of posttensioned wall systems and validated their superior performance compared to reinforced concrete construction when subjected to large lateral drifts.