Search
found 294 results
Images for ground; more images...
22 February Earthquake - Photograph 49
Images, UC QuakeStudies
Liquefaction silt covers the ground in front of the Shirley Medical Centre, and more silt is piled beside the entrance. The photographer comments, "These photos show our old house in River Rd and recovery work around Richmond and St Albans. The local medical centre is seriously silted up".
UC Restarts - Photograph 30
Images, UC QuakeStudies
A sign at ground level on a coal bunker in the University of Canterbury's Facilities Management yard reads "Squawk. Quack quack squawk. Quack quack quack quack quack. Danger. Health and safety risk. No ducklings past this point." The photographer comments, "Sign on the coal bunker at the boiler house, FM".
Photo by Jennifer Middendorf 031
Images, UC QuakeStudies
Looking through the cordon fence on Worcester Boulevard towards the Cathedral. Beams propping up Our City are visible on the left, and the dome of the Regent Theatre, removed and placed on the ground to protect it from further damage, is in front of the Cathedral.
BeckerFraserPhotos February 2011 photograph 359
Images, UC QuakeStudies
The lids of septic tanks that have been buried in the ground beside the footpath on Robson Avenue in Avonside. These tanks were installed in front of Avonside properties to allow residents to use their toilets after the 4 September 2010 earthquake.
BeckerFraserPhotos April 2011 photograph 553
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The Avon River is at this point on Avonside Drive 10 km from the estuary. At high tide the river now overflows its banks showing that the ground has sunk by about 40 cm".
Jennifer's Red Zone photograph 2
Images, UC QuakeStudies
A photograph contributed by Jennifer, a participant in the Understanding Place research project. The photograph has the description "The ground is covered in little mushrooms when you start looking, but it's hard to tell which are edible". Please note that Jennifer's Red Zone Story was a test-pilot for the Understanding Place project.
BeckerFraserPhotos September 2010 photograph 097
Images, UC QuakeStudies
A collapsed brick wall on Halswell Junction Road. A stack of bricks have been saved by the tree which has grown in a curve and is resting on the wall, holding the bricks in place. A pile of bricks can be seen on the ground where they fell.
Jim Baltaxe WEMO Photograph 043
Images, UC QuakeStudies
A photograph of the earthquake damage to the Loyal Benevolent Lodge on Canon Street. Bricks at the top of the façade have crumbled and fallen to the ground, bringing the awning with them. Large cracks can be seen in the remaining brick wall.
BeckerFraserPhotos April 2011 photograph 246
Images, UC QuakeStudies
Notices on the doors of The Cook Shop on the ground level of the Strategy building, Montreal Street. The sign on the left reads, "Danger, your house has a red placard, do not enter". The sign to the right indicates that the building is unsafe to enter.
BeckerFraserPhotos April 2011 photograph 545
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The Avon River is at this point on Avonside Drive 10 km from the estuary. At high tide the river now overflows its banks showing that the ground has sunk by about 40 cm".
BeckerFraserPhotos April 2011 photograph 542
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The Avon River is at this point on Avonside Drive 10 km from the estuary. At high tide the river now overflows its banks showing that the ground has sunk by about 40 cm".
BeckerFraserPhotos April 2011 photograph 659
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The ground floor of the IRD building on the corner of Cashel and Madras Streets, taken through the Madras Street window. The book market inside the building is almost undisturbed while next door, the CTV building collapsed.
BeckerFraserPhotos March 2011 photograph 280
Images, UC QuakeStudies
St John's Presbyterian Church on Winchester Street in Lyttelton. The ground around the church has been strewn with masonry from the church's walls and collapsed tower. The spire of the collapsed tower has fallen in front of the church, which has been enclosed by a safety fence.
BeckerFraserPhotos March 2011 photograph 275
Images, UC QuakeStudies
St John's Presbyterian Church on Winchester Street in Lyttelton. The ground around the church is strewn with masonry that has fallen from the church's walls and collapsed tower. The building's front door has been red-stickered and a sign that reads "No entry" is stuck to it.
BeckerFraserPhotos April 2011 photograph 026
Images, UC QuakeStudies
A view down a New Brighton Road next to the river. On the left sandbags have been placed on the banks of the river to prevent flooding onto the road. The earthquake caused the ground to subside and sink, making this area susceptible to flooding.
Jim Baltaxe WEMO Photograph 126
Images, UC QuakeStudies
A photograph of the earthquake damage to the Christchurch Chinese Methodist Church on Papanui Road. The gable wall has crumbled, the bricks and window frame falling onto the ground. Wire fencing has been placed around the building as a cordon.
BeckerFraserPhotos April 2011 photograph 554
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The Avon River is at this point on Avonside Drive 10 km from the estuary. At high tide the river now overflows its banks showing that the ground has sunk by about 40 cm".
BeckerFraserPhotos October 2010 photograph 017
Images, UC QuakeStudies
A crack next to the Avon River caused by the ground slumping after the 4 September earthquake. A blue pipe has been laid over the crack. Many kilometres of these temporary water pipes have been run overground in Avonside to supply houses with water.
SeisFinder : A Web Application for Extraction of Data from Computationally…
Research papers, University of Canterbury Library
Overview of SeisFinder SeisFinder is an open-source web service developed by QuakeCoRE and the University of Canterbury, focused on enabling the extraction of output data from computationally intensive earthquake resilience calculations. Currently, SeisFinder allows users to select historical or future events and retrieve ground motion simulation outputs for requested geographical locations. This data can be used as input for other resilience calculations, such as dynamic response history analysis. SeisFinder was developed using Django, a high-level python web framework, and uses a postgreSQL database. Because our large-scale computationally-intensive numerical ground motion simulations produce big data, the actual data is stored in file systems, while the metadata is stored in the database. The basic SeisFinder architecture is shown in Figure 1.
BeckerFraserPhotos September 2011 photograph 597
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "Looking south along Tramway Lane and Tattersalls Lane with the Hotel Grand Chancellor at the end (note the concrete truck delivering concrete being pumped into the ground floor of the hotel)".
WEMO ERT Set 3 - February 2011 - Photograph 199
Images, UC QuakeStudies
A photograph of a sitting area on the ground floor of the Crowne Plaza Hotel. A plate and magazines has fallen off the coffee table and a chair has toppled over. In the background, a piece of the ceiling under the stairs is hanging loose.
BeckerFraserPhotos February 2012 photograph 0659
Images, UC QuakeStudies
A photograph of the spire of ChristChurch Cathedral sitting on the ground in Cathedral Square. The photograph is captioned by BeckerFraserPhotos, "The dry summer grass shows the passing of the seasons while the top of the spire of the ChristChurch Cathedral stays still".
BeckerFraserPhotos April 2011 photograph 544
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The Avon River is at this point on Avonside Drive 10 km from the estuary. At high tide the river now overflows its banks showing that the ground has sunk by about 40 cm".
BeckerFraserPhotos April 2012 photograph 258
Images, UC QuakeStudies
A weather-damaged Chinese lantern fallen to the ground in Victoria Square. The Chinese New Year Lantern Festival was to be held on Saturday 26 February and Sunday 27 February 2011 but was cancelled due to the earthquake. The lanterns hung in Victoria Square until they fell.
WEMO ERT Set 3 - February 2011 - Photograph 240
Images, UC QuakeStudies
A photograph of the earthquake damage to a building on Oxford Terrace. The wall to the right has collapsed, the concrete blocks spilling onto the footpath in front. USAR codes have been spray-painted on the ground at the entrance of the building.
BeckerFraserPhotos April 2011 photograph 025
Images, UC QuakeStudies
A view down a New Brighton Road next to the river. On the left sandbags have been placed on the banks of the river to prevent flooding onto the road. The earthquake caused the ground in this area to subside, making it susceptible to flooding.
Canterbury Earthquake September 2010 - Photograph 25
Images, UC QuakeStudies
Damage to a house in Richmond. Bricks have fallen from a wall, and there is a visible gap between the foundation and the surrounding ground. The photographer comments, "The foundation and a section of the wall of the dining room have shifted and cracked. The dining room floor is very springy".
Simulation and Validation of Topographic Effectds on Mt Pleasant, Christch…
Research papers, University of Canterbury Library
Damage distribution maps from strong earthquakes and recorded data from field experiments have repeatedly shown that the ground surface topography and subsurface stratigraphy play a decisive role in shaping the ground motion characteristics at a site. Published theoretical studies qualitatively agree with observations from past seismic events and experiments; quantitatively, however, they systematically underestimate the absolute level of topographic amplification up to an order of magnitude or more in some cases. We have hypothesized in previous work that this discrepancy stems from idealizations of the geometry, material properties, and incident motion characteristics that most theoretical studies make. In this study, we perform numerical simulations of seismic wave propagation in heterogeneous media with arbitrary ground surface geometry, and compare results with high quality field recordings from a site with strong surface topography. Our goal is to explore whether high-fidelity simulations and realistic numerical models can – contrary to theoretical models – capture quantitatively the frequency and amplitude characteristics of topographic effects. For validation, we use field data from a linear array of nine portable seismometers that we deployed on Mount Pleasant and Heathcote Valley, Christchurch, New Zealand, and we compute empirical standard spectral ratios (SSR) and single-station horizontal-to-vertical spectral ratios (HVSR). The instruments recorded ambient vibrations and remote earthquakes for a period of two months (March-April 2017). We next perform two-dimensional wave propagation simulations using the explicit finite difference code FLAC. We construct our numerical model using a high-resolution (8m) Digital Elevation Map (DEM) available for the site, an estimated subsurface stratigraphy consistent with the geomorphology of the site, and soil properties estimated from in-situ and non-destructive tests. We subject the model to in-plane and out-of-plane incident motions that span a broadband frequency range (0.1-20Hz). Numerical and empirical spectral ratios from our blind prediction are found in very good quantitative agreement for stations on the slope of Mount Pleasant and on the surface of Heathcote Valley, across a wide range of frequencies that reveal the role of topography, soil amplification and basin edge focusing on the distribution of ground surface motion.
WEMO ERT Set 1 - March 2011 - Photograph 47
Images, UC QuakeStudies
A photograph of the earthquake damage to a shop on Colombo Street. Part of the closest brick wall of the building has collapsed and the bricks have spilled onto the ground in front of the building. "No go" has been spray-painted on the footpath in the foreground of the photograph.
BeckerFraserPhotos February 2012 photograph 0640
Images, UC QuakeStudies
A photograph of workers suspended in a basket from a crane. The photograph is captioned by BeckerFraserPhotos, "The kind of working conditions that don't appeal to everyone. The workers at the Provincial Council Chambers seem relaxed as they are lowered to the ground".