Our poster will present on-going QuakeCoRE-founded work on strong motion seismology for Dunedin-Mosgiel area, focusing on ground motion simulations for Dunedin Central Business District (CBD). Source modelling and ground motion simulations are being carried out using the SCEC (Southern California Earthquakes Center) Broad Band simulation Platform (BBP). The platform computes broadband (0-10 Hz) seismograms for earthquakes and was first implemented at the University of Otago in 2016. As large earthquakes has not been experienced in Dunedin in the time of period of instrumental recording, user-specified scenario simulations are of great value. The Akatore Fault, the most active fault in Otago and closest major fault to Dunedin, is the source focused on in the present study. Simulations for various Akatore Fault source scenarios are run and presented. Path and site effects are key components considered in the simulation process. A 1D shear wave velocity profile is required by SCEC BBP, and this is being generated to represent the Akatore-to-CBD path and site within the BBP. A 3D shear velocity model, with high resolution within Dunedin CBD, is being developed in parallel with this study (see Sangster et al. poster). This model will be the basis for developing a 3D shear wave velocity model for greater Dunedin-Mosgiel area for future ground motion simulations, using Canterbury software (currently under development).
Photograph captioned by BeckerFraserPhotos, "A view of SOL Square from the top of the Alice in Videoland building on the corner of High Street and Tuam Street".
Photograph captioned by BeckerFraserPhotos, "City Council admin building (centre), Cathedral Square (lower left), Arts Centre (centre right) and public hospital (upper right)".
Photograph captioned by BeckerFraserPhotos, "The street signs and way-marking board place this scene at the intersection of Manchester, High and Lichfield Streets, even if you struggle to find other landmarks that place it there".
Photograph captioned by BeckerFraserPhotos, "Looking from Gloucester Street across the demolition site of the Coachman and Canterbury Times (Christchurch Star?) buildings with Heritage Hotel on the left and Novotel in the centre".
Photograph captioned by BeckerFraserPhotos, "Looking from Gloucester Street across the demolition site of the Coachman and Canterbury Times (Christchurch Star?) buildings with Heritage Hotel on the left and Novotel in the centre".
Photograph captioned by BeckerFraserPhotos, "View from Cashel Mall looking over the Whitcoulls site and the demolition of Wendy's in Hereford Street to the back of the ANZ bank in Cathedral Square".
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)".
Photograph captioned by BeckerFraserPhotos, "Looking north along Cambridge Terrace and Durham Street from St Michael and All Angels Church. New Cashel Mall is at centre right".
A photograph taken from the top of the BNZ building. The photograph is captioned by BeckerFraserPhotos, "A group of people on top of the Millennium Hotel with the Pacific tower to the left of the photo".
An aerial photograph of Cathedral Square. The photograph has been captioned by BeckerFraserPhotos, "Central city blocks bounded by Colombo Street, Hereford Street, Cashel Street and High Streets".
Damage to the front of the Cathedral of the Blessed Sacrament. The upper part of the corner structures have collapsed, and the cross on the roof is on a lean. A statue of the Virgin Mary can be seen in a window. The photographer comments, "A bike ride around the CBD. Catholic Cathedral, Barbadoes St".
Photograph captioned by BeckerFraserPhotos, "Looking from Gloucester Street across the demolition site of the Coachman and Canterbury Times (Christchurch Star?) buildings with Heritage Hotel on the left and Novotel in the centre".
An aerial photograph of the Christchurch central city. The photograph is captioned by BeckerFraserPhotos, "Brannigans building is in the centre of the photograph with Gloucester Street running through the middle of the photograph. The photograph shows the rear of the building".
An aerial photograph of the Christchurch central city near Cashel and High Streets. The photograph has been captioned by BeckerFraserPhotos, "The dense collection of buildings surrounding the Hotel Grand Chancellor with the two cranes being used for the demolition. What little of the street is visible running horizontally across the photograph is Hereford Street".
Photograph captioned by BeckerFraserPhotos, "Demolition site of Warners Hotel, taken from Gloucester Street with a view through to the Heritage Hotel and Millennium Hotel. The Hotel Grand Chancellor is behind".
Photograph captioned by BeckerFraserPhotos, "It's not easy to spot, but look at the floor level in this picture. By the bar, it's about half a metre higher than in the foreground. Pressure under the floor pushed the whole floor up".
An aerial photograph captioned by BeckerFraserPhotos, "Central city blocks bounded by Colombo Street, Hereford Street, Cashel Street, and High Streets".
An aerial photograph captioned by BeckerFraserPhotos, "Colombo Street beginning at the Copthorne on the left and ending just past the Christchurch Cathedral".
A photograph captioned by BeckerFraserPhotos, "The basement of the Louis Vuitton Building on the corner of Colombo Street and Cathedral Square, exposed now the building has been demolished. The Christ Church Cathedral can be seen in the background".
The intersection of Colombo and High Streets with Hereford Street to the left. The 'Flour Power' statue stands in the centre of the intersection with wire fencing placed around it. Three cranes can be seen in the distance.
Photograph captioned by BeckerFraserPhotos, "Demolition site of the Allan McLean building, on the corner of Colombo Street and Oxford Terrace. The PricewaterhouseCoopers building is behind. The green digger is feeding the yellow concrete muncher while the red digger redistributes the munched up concrete".
A photograph captioned by BeckerFraserPhotos, "A view from Cambridge Terrace across the Avon River to Victoria Square. The demolition of the Plunket House and the Oxford on Avon on Oxford Terrace has opened up this view so that Victoria Square can be seen".
A worker in a high visibility vest and a hard hat repairing and strengthening the outside of a building at the University of Canterbury. The photograph has been captioned by BeckerFraserPhotos, "The repair work on the buildings at the University of Canterbury looks similar to the scenes in the CBD".
An aerial photograph captioned by BeckerFraserPhotos, "Central city blocks bounded by Colombo Street, Hereford Street, Cashel Street, and High Street".
Photograph captioned by BeckerFraserPhotos, "Site of the old Press Building in Cathedral Square and from left to right, Novatel Hotel, Price Waterhouse Coopers Building, Isaac Theatre Royal (behind the crane), new Press Building, Tramway Junction with the Rendevous Hotel showing above".
An aerial photograph of High Street. The photograph has been captioned by BeckerFraserPhotos, "A detail of High Street between the Lichfield and Manchester Street intersection and the Tuam and Poplar Street intersection".
An aerial photograph of the Christchurch central city. The photograph has been captioned by BeckerFraserPhotos, "Tall buildings of the central city with the Christ Church Cathedral in the middle".
Damage to Englefield Lodge on Fitzgerald Avenue. A pile of bricks lies in front of the house, windows are boarded up, and wooden bracing is propping up the walls. A spray-painted message on a wall reads "We will try to save this house." The photographer comments, "A bike ride around the CBD. Englefield, Christchurch's oldest house, in Fitzgerald Ave".
A photograph captioned by BeckerFraserPhotos, "The Octagon Live Restaurant, formerly Trinity Congregational Church, on the corner of Manchester and Worcester Street. This was further damaged in the 23 December 2011 earthquake when a big piece of the rose window fell out".