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Images, UC QuakeStudies

Cobwebs and graffiti in a shower block. The photographer comments, "This was the Soccer changing rooms in Bexley Park in Christchurch. They have now been made out of bounds due to the extensive damage to the big building. The spiders must have grown awfully big though".

Images, UC QuakeStudies

A photograph of an exhibition sign next to two time capsules on display in the Canterbury Quakes exhibition at the Canterbury Museum. The time capsules were discovered in the plinth of the statue of John Robert Godley in Cathedral Square after the 22 February 2011 earthquake.

Videos, UC QuakeStudies

A video of Stone Works removing a time capsule from the foundations of the old Press Building in Cathedral Square. The time capsule was found in the foundation stone of the building. It contained a bundle of newspapers from April 1907, handwritten notes, and coins.

Research papers, University of Canterbury Library

The structure and geomorphology of active orogens evolves on time scales ranging from a single earthquake to millions of years of tectonic deformation. Analysis of crustal deformation using new and established remote sensing techniques, and integration of these data with field mapping, geochronology and the sedimentary record, create new opportunities to understand orogenic evolution over these timescales. Timor Leste (East Timor) lies on the northern collisional boundary between continental crust from the Australian Plate and the Banda volcanic arc. GPS studies have indicated that the island of Timor is actively shortening. Field mapping and fault kinematic analysis of an emergent Pliocene marine sequence identifies gentle folding, overprinted by a predominance of NW-SE oriented dextral-normal faults and NE-SW oriented sinistral-normal faults that collectively bound large (5-20km2) bedrock massifs throughout the island. These fault systems intersect at non-Andersonian conjugate angles of approximately 120° and accommodate an estimated 20 km of orogen-parallel extension. Folding of Pliocene rocks in Timor may represent an early episode of contraction but the overall pattern of deformation is one of lateral crustal extrusion sub-parallel to the Banda Arc. Stratigraphic relationships suggest that extrusion began prior to 5.5 Ma, during and after initial uplift of the orogen. Sedimentological, geochemical and Nd isotope data indicate that the island of Timor was emergent and shedding terrigenous sediment into carbonate basins prior to 4.5 Ma. Synorogenic tectonic and sedimentary phases initiated almost synchronously across much of Timor Leste and <2 Myr before similar events in West Timor. An increase in plate coupling along this obliquely converging boundary, due to subduction of an outlying continental plateau at the Banda Trench, is proposed as a mechanism for uplift that accounts for orogen-parallel extension and early uplift of Timor Leste. Rapid bathymetric changes around Timor are likely to have played an important role in evolution of the Indonesian Seaway. The 2010 Mw 7.1 Darfield (Canterbury) earthquake in New Zealand was complex, involving multiple faults with strike-slip, reverse and normal displacements. Multi-temporal cadastral surveying and airborne light detection and ranging (LiDAR) surveys allowed surface deformation at the junction of three faults to be analyzed in this study in unprecedented detail. A nested, localized restraining stepover with contractional bulging was identified in an area with the overall fault structure of a releasing bend, highlighting the surface complexities that may develop in fault interaction zones during a single earthquake sequence. The earthquake also caused river avulsion and flooding in this area. Geomorphic investigations of these rivers prior to the earthquake identify plausible precursory patterns, including channel migration and narrowing. Comparison of the pre and post-earthquake geomorphology of the fault rupture also suggests that a subtle scarp or groove was present along much of the trace prior to the Darfield earthquake. Hydrogeology and well logs support a hypothesis of extended slip history and suggests that that the Selwyn River fan may be infilling a graben that has accumulated late Quaternary vertical slip of <30 m. Investigating fault behavior, geomorphic and sedimentary responses over a multitude of time-scales and at different study sites provides insights into fault interactions and orogenesis during single earthquakes and over millions of years of plate boundary deformation.

Videos, UC QuakeStudies

A video about the time capsule found in the foundations of the former Press Building in Cathedral Square. Heritage consultant Jenny May shows the contents of the time capsule, including several coins, newspaper articles, and messages. The capsule was left by the architects and the people working on the building, rather than the editors of The Press.

Research papers, University of Canterbury Library

The current study examined the psychological effects of recurring earthquake aftershocks in the city of Christchurch, New Zealand, which began in September 2010. Although it has been identified that exposure to ongoing adverse events such as continuing terrorist attacks generally leads to the development of increasing symptomology over time, differences in perceived controllability and blame between man-made and natural adverse events may contribute to differences in symptom trajectories. Residents of two Christchurch suburbs differentially affected by the earthquakes (N = 128) were assessed on measures of acute stress disorder, generalised anxiety, and depression, at two time points approximately 4-5 months apart, in order to determine whether symptoms intensified or declined over time in the face of ongoing aftershocks. At time 1, clinically significant levels of acute stress were identified in both suburbs, whereas clinical elevations in depression and anxiety were only evident in the most affected suburb. By time 2, both suburbs had fallen below the clinical range on all three symptom types, identifying a pattern of habituation to the aftershocks. Acute stress symptoms at time 2 were the most highly associated with the aftershocks, compared to symptoms of generalised anxiety and depression which were identified by participant reports to be more likely associated with other earthquake-related factors, such as insurance troubles and less frequent socialisation. The finding that exposure to ongoing earthquake aftershocks leads to a decline in symptoms over time may have important implications for the assessment of traumatic stress-related disorders, and provision of services following natural, as compared to man-made, adverse events.

Images, UC QuakeStudies

A photograph of a letter on display in the Canterbury Quakes exhibition at the Canterbury Museum. The letter was found in a time capsule in the plinth of the statue of John Robert Godley in Cathedral Square after the 22 February 2011 earthquake.

Images, UC QuakeStudies

A photograph of a letter on display in the Canterbury Quakes exhibition at the Canterbury Museum. The letter was found in a time capsule in the plinth of the statue of John Robert Godley in Cathedral Square after the 22 February 2011 earthquake.

Images, UC QuakeStudies

A photograph of The Press newspapers on display in the Canterbury Quakes exhibition at the Canterbury Museum. The newspapers where discovered inside a time capsule found in the plinth of the statue of John Robert Godley in Cathedral Square after the 22 February 2011 earthquake.

Images, UC QuakeStudies

A photograph of The Press newspapers on display in the Canterbury Quakes exhibition at the Canterbury Museum. The newspapers where discovered inside a time capsule found in the plinth of the statue of John Robert Godley in Cathedral Square after the 22 February 2011 earthquake.