Shallow shear wave velocity characterization of the urban Christchurch, New Zealand region (2014)
Type of ContentConference Contributions - Other
PublisherUniversity of Canterbury. Civil and Natural Resources Engineering
This poster provides a summary of the development of a 3D shallow (z<40m) shear wave velocity (Vs) model for the urban Christchurch, New Zealand region. The model is based on a recently developed Christchurch-specific empirical correlation between Vs and cone penetration test (CPT) data (McGann et al. 2014a,b) and the large high-density database of CPT logs in the greater Christchurch urban area (> 15,000 logs as of 01/01/2014). In particular, the 3D model provides shear wave velocities for the surficial Springston Formation, Christchurch Formation, and Riccarton gravel layers which generally comprise the upper 40m in the Christchurch urban area. Point-estimates are provided on a 200m-by- 200m grid from which interpolation to other locations can be performed. This model has applications for future site characterization and numerical modeling efforts via maps of timeaveraged Vs over specific depths (e.g. Vs30, Vs10) and via the identification of typical Vs profiles for different regions and soil behaviour types within Christchurch. In addition, the Vs model can be used to constrain the near-surface velocities for the 3D seismic velocity model of the Canterbury basin (Lee et al. 2014) currently being developed for the purpose of broadband ground motion simulation.
CitationMcGann, C.R., Bradley, B.A., Cubrinovski, M. (2014) Shallow shear wave velocity characterization of the urban Christchurch, New Zealand region. Palm Springs, CA, USA: Southern California Earthquake Centre Annual Meeting (SCEC), 7-10 Sep 2014.
This citation is automatically generated and may be unreliable. Use as a guide only.
ANZSRC Fields of Research40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineering
37 - Earth sciences::3706 - Geophysics::370609 - Seismology and seismic exploration
Showing items related by title, author, creator and subject.
High-density shallow shear wave velocity characterisation of the urban Christchurch, New Zealand region McGann CR; Bradley, Brendon; Cubrinovski M (University of Canterbury, Christchurch, New Zealand, 2015)This report summarizes the development of a region-wide surficial soil shear wave velocity (Vs ) model based on the unique combination of a large high-spatial-density database of cone penetration test (CPT) logs in the ...
Ongoing development of a near-surface shear wave velocity (Vs) model for Christchurch using a region-specific CPT-Vs correlation McGann, C.R.; Bradley, Brendon; Cubrinovski, M. (University of Canterbury. Civil and Natural Resources Engineering, 2015)This paper summarizes the development of a region-wide surficial shear wave velocity model based on the combination of the large high-spatial-density database of cone penetration test (CPT) logs in and around Christchurch, ...
Full waveform seismic tomography for geological velocity model in Canterbury region based on adjoint-wavefield method Nguyen T; Lee R; Juarez A; Bradley, Brendon (Southern California Earthquake Center, 2019)