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Images for earthquakes; more images...

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0866.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0872.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0891.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0897.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0893.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0863.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0880.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0883.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0896.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0888.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Friday 22 February 2013. Flowers in road cones on corner of Hercules and Sabina Streets, Shirley, Christchurch. File reference: CCL-2013-02-22-River-of-FlowersDSC_03417.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0885.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0881.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0887.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0853.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0894.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Gloucester Street, seen from Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0854.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0852.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Gloucester Street, seen from Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0899.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0857.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0865.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0892.JPG From the collection of Christchurch City Libraries.

Research papers, University of Canterbury Library

Heathcote Valley school strong motion station (HVSC) consistently recorded ground motions with higher intensities than nearby stations during the 2010-2011 Canterbury earthquakes. For example, as shown in Figure 1, for the 22 February 2011 Christchurch earthquake, peak ground acceleration at HVSC reached 1.4 g (horizontal) and 2 g (vertical), the largest ever recorded in New Zealand. Strong amplification of ground motions is expected at Heathcote Valley due to: 1) the high impedance contrast at the soil-rock interface, and 2) the interference of incident and surface waves within the valley. However, both conventional empirical ground motion prediction equations (GMPE) and the physics-based large scale ground motions simulations (with empirical site response) are ineffective in predicting such amplification due to their respective inherent limitations.

Research papers, University of Canterbury Library

Liquefaction-induced lateral spreading during earthquakes poses a significant hazard to the built environment, as observed in Christchurch during the 2010 to 2011 Canterbury Earthquake Sequence (CES). It is critical that geotechnical earthquake engineers are able to adequately predict both the spatial extent of lateral spreads and magnitudes of associated ground movements for design purposes. Published empirical and semi-empirical models for predicting lateral spread displacements have been shown to vary by a factor of <0.5 to >2 from those measured in parts of Christchurch during CES. Comprehensive post- CES lateral spreading studies have clearly indicated that the spatial distribution of the horizontal displacements and extent of lateral spreading along the Avon River in eastern Christchurch were strongly influenced by geologic, stratigraphic and topographic features.