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Images for CANTERBURY EARTHQUAKE; more images...

Research papers, University of Canterbury Library

Knowing how to rapidly rebuild disaster-damaged infrastructure, while deciding appropriate recovery strategies and catering for future investment is a matter of core interest to government decision makers, utility providers, and business sectors. The purpose of this research is to explore the effects of decisions and outcomes for physical reconstruction on the overall recovery process of horizontal infrastructure in New Zealand using the Canterbury and Kaikoura earthquakes as cases. A mixed approach including a systematic review, questionnaire survey and semi-structured interviews is used to capture perspectives of those involved in reconstruction process and gain insights into the effect of critical elements on infrastructure downtime. Findings from this research will contribute towards advancements of a systems dynamics model considering critical decision-making variables across phases of the reconstruction process to assess how these variables affect the rebuild process and the corresponding downtime. This project will improve the ability to explore alternative resilience improvement pathways and test the efficacy of alternative means for facilitating a faster and better reconstruction process.

Images, UC QuakeStudies

A photograph of the damaged Provincial Council Chambers on Durham Street. The building's roof and walls have collapsed, as has the scaffolding which was erected to repair it after the 4 September 2010 earthquake.

Images, UC QuakeStudies

A photograph of an earthquake-damaged suitcase in the South Quad of the Christchurch Arts Centre. The suitcase is resting on a pile of scaffolding which had been constructed around the Observatory tower. The scaffolding collapsed along with the tower during the 22 February 2011 earthquake.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Canterbury Provincial Chambers on Durham Street. One of the entrance ways has crumbled, and the rubble has fallen in front. An inner door can be seen, now leading to nowhere.

Images, UC QuakeStudies

Members of the Student Volunteer Army registering new volunteers inside the UCSA's "Big Top" tent. The tent was erected to provide support for students at the University of Canterbury in the aftermath of the 22 February 2011 earthquake.

Images, UC QuakeStudies

Members of the Student Volunteer Army registering new volunteers inside the UCSA's "Big Top" tent. The tent was erected to provide support for students at the University of Canterbury in the aftermath of the 22 February 2011 earthquake.

Research papers, Victoria University of Wellington

©2019. American Geophysical Union. All Rights Reserved. Earthquakes have been inferred to induce hydrological changes in aquifers on the basis of either changes to well water-levels or tidal behavior, but the relationship between these changes remains unclear. Here, changes in tidal behavior and water-levels are quantified using a hydrological network monitoring gravel aquifers in Canterbury, New Zealand, in response to nine earthquakes (of magnitudes M w 5.4 to 7.8) that occurred between 2008 and 2015. Of the 161 wells analyzed, only 35 contain water-level fluctuations associated with “Earth + Ocean” (7) or “Ocean” (28) tides. Permeability reduction manifest as changes in tidal behavior and increased water-levels in the near field of the Canterbury earthquake sequence of 2010–2011 support the hypothesis of shear-induced consolidation. However, tidal behavior and water-level changes rarely occurred simultaneously (~2%). Water-level changes that occurred with no change in tidal behavior reequilibrated at a new postseismic level more quickly (on timescales of ~50 min) than when a change in tidal behavior occurred (~240 min to 10 days). Water-level changes were more than likely to occur above a peak dynamic stress of ~50 kPa and were more than likely to not occur below ~10 kPa. The minimum peak dynamic stress required for a tidal behavior change to occur was ~0.2 to 100 kPa.