Photos taken in Lyttelton following the February 22 earthquake. File ref: CCL-2011-03-05-After-The-Earthquake-P1110507 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0465 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0472 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0471 From the collection of Christchurch City Libraries
Photos taken in New Brighton on March 31 following the February 22 earthquake. File reference: CCL-2011-03-25-New Brighton-After-The-Earthquake-NB Parkland 007 From the collection of Christchurch City Libraries
Photos taken in Lyttelton following the February 22 earthquake. File ref: CCL-2011-03-05-After-The-Earthquake-P1110529 From the collection of Christchurch City Libraries
Photos taken in Lyttelton showing the demolition of various buildings following the February 22 earthquake. File reference: CCL-2011-05-20-Lyttelton-Demolition-P1120458 From the collection of Christchurch City Libraries.
Photos taken in Lyttelton showing the demolition of various buildings following the February 22 earthquake. File reference: CCL-2011-05-20-Lyttelton-Demolition-P1120446 From the collection of Christchurch City Libraries.
Photos taken in Lyttelton showing the demolition of various buildings following the February 22 earthquake. File reference: CCL-2011-05-20-Lyttelton-Demolition-P1120472 From the collection of Christchurch City Libraries.
Photos taken in Hornby Library on April 15, 2011 following the February 22 earthquake. File reference: CCL-2011-04-15-Hornby-After-The-Earthquake-IMG_0480 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0476 From the collection of Christchurch City Libraries
Photos taken in Lyttelton following the February 22 earthquake. Permit authorised by commanding officer HMNZS Canterbury. File ref: CCL-2011-03-05-After-The-Earthquake-P1110452 From the collection of Christchurch City Libraries
Photos taken in Hornby Library on April 15, 2011 following the February 22 earthquake. File reference: CCL-2011-04-15-Hornby-After-The-Earthquake-IMG_0477 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0473 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0464 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0474 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0467 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0463 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0469 From the collection of Christchurch City Libraries
Photos taken in Lyttelton on March 20 following the February 22 earthquake. File reference: CCL-2011-03-20-After-The-Earthquake-P1110719 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0468 From the collection of Christchurch City Libraries
Photos taken in Hornby Library on April 15, 2011 following the February 22 earthquake. File reference: CCL-2011-04-15-Hornby-After-The-Earthquake-IMG_0482 From the collection of Christchurch City Libraries
Photos taken in Hornby Library on April 15, 2011 following the February 22 earthquake. File reference: CCL-2011-04-15-Hornby-After-The-Earthquake-IMG_0479 From the collection of Christchurch City Libraries
Photos taken in Hornby Library on April 15, 2011 following the February 22 earthquake. File reference: CCL-2011-04-15-Hornby-After-The-Earthquake-IMG_0481 From the collection of Christchurch City Libraries
Photos taken in Spreydon Library on April 15 following the February 22 earthquake. File reference: CCL-2011-04-08-Spreydon-After-The-Earthquake-IMG_0470 From the collection of Christchurch City Libraries
Photos taken in Hornby Library on April 15, 2011 following the February 22 earthquake. File reference: CCL-2011-04-15-Hornby-After-The-Earthquake-IMG_0478 From the collection of Christchurch City Libraries
Photos taken in Lyttelton following the February 22 earthquake. File ref: CCL-2011-03-05-After-The-Earthquake-P1110526 From the collection of Christchurch City Libraries
Earthquake-triggered soil liquefaction caused extensive damage and heavy economic losses in Christchurch during the 2010-2011 Canterbury earthquakes. The most severe manifestations of liquefaction were associated with the presence of natural deposits of clean sands and silty sands of fluvial origin. However, liquefaction resistance of fines-containing sands is commonly inferred from empirical relationships based on clean sands (i.e. sands with less than 5% fines). Hence, existing evaluation methods have poor accuracy when applied to silty sands. Also, existing methods do not quantify appropriately the influence on liquefaction resistance of soil fabric and structure, which are unique to a specific depositional environment. This study looks at the influence of fines content, soil fabric (i.e. arrangement of soil particles) and structure (e.g. layering, segregation) on the undrained cyclic behaviour and liquefaction resistance of fines-containing sandy soils from Christchurch using Direct Simple Shear (DSS) tests on soil specimens reconstituted in the laboratory with the water sedimentation technique. The poster describes experimental procedures and presents early test results on two sands retrieved at two different sites in Christchurch.
A film directed by Christchurch East Youth MP Beth Walters, produced and filmed by Lila Gibbens. The film captures the views of more than 50 young people from Aranui High School, Linwood College and Mairehau High School. Students share their answers to the following questions: How do you feel about living in the East? What don't you like about living in the East? What do you want to see more of? What do you like? Do you, as a young person in the East, feel your voice is heard? Would you stay? The film features an original song produced by three Aranui High School students: Cheyenne Thompson (lyrics), Evile Jireh Sisifo Laloata (vocals) and Peni Junior Iva (guitar).
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.