@article {bnh-7137, title = {An Adaptive Ground Motion Prediction Equation for Use in Low-to-Moderate Seismicity Regions}, journal = {Journal of Earthquake Engineering}, year = {2020}, month = {07/2020}, pages = {1-23}, abstract = {

In regions of low-to-moderate seismicity where representative strong motion data is lacking, the modelling of seismic hazard relies on the use of seismological models. This paper presents a set of expressions that can be used as ground motion prediction equations that have been transformed from seismological models which resolve the generation of seismic waves into several components. The feature of this presented set of expressions is that it can be adapted to represent earthquake ground motion behaviour that is defined by a diversity of seismological models. The motivation behind the development of the presented adaptive predictive relationship which is known as the\ Component Attenuation Model\ (CAM) was to fast track, and make transparent, the transformation from seismological models to predictions of response spectral values for engineering applications. Thus,\ CAM\ can be used to waive away the need of executing any software for undertaking stochastic simulations nor time-history analyses for calculation of the response spectral ordinates. An important and original, the feature of\ CAM\ is incorporating the shear wave velocity profile of the bedrock and the associated upper-crustal modification into the model. This article presenting\ CAM\ is essentially a contribution to engineering as opposed to seismology. The potential benefits derived from the fast-tracking can be considerable given that the transformation is seldom a one-off process and would need to be repeated for any given targeted area, in view of uncertainties surrounding seismological conditions of the earth crust around the globe.

}, keywords = {attenuation parameter, Component attenuation model, ground motion prediction equations, upper-crustal modification}, doi = {https://doi.org/10.1080/13632469.2020.1784810}, url = {https://www.tandfonline.com/doi/abs/10.1080/13632469.2020.1784810}, author = {Yuxiang Tang and Nelson Lam and Hing-Ho Tsang and Elisa Lumantarna} } @conference {bnh-1888, title = {Ground Motion Modelling and Response Spectra for Australian Earthquakes}, booktitle = {Australian Earthquake Engineering Society Conference 2013}, year = {2013}, abstract = {

Due to the relatively low frequency of large earthquake events in Australia, and the\ inadequacy of recorded data, engineering seismologists commonly adapt ground motion\ prediction equations (GMPEs) developed from other regions with similar conditions to the\ Australian continent for the calculation of acceleration and displacement response. Recent\ improvements using high quality recorded data have given rise to Next Generation\ Attenuation (NGA) ground motion models. However, these NGA ground motion models\ show significant discrepancies with other ground motion prediction equations that have been\ developed and used in Australia, and these include the models that have helped establish the\ new Australian Earthquake Hazard Map. This paper presents a study which looks at the\ possibility of a very rare earthquake occurring at close proximity to the Sydney CBD. The\ suitability of use in Australia of the various available ground motion models is discussed, and\ some of these models are used to calculate the acceleration and displacement response\ spectra. There is a large discrepancy observed between the western North American derived\ NGAs and some of the other Australian GMPEs. The SHAKE2000 computer program was\ used to illustrate amplification of response at a soil site relative to that at a rock site. An\ NGA-West 2 model, that will be available in 2013, is also shown to illustrate improvements\ to the original 2008 NGA models.

}, keywords = {Australian earthquakes, ground motion prediction equations, intra-plate, Next generation attenuation, NGA-West 2, SHAKE2000}, author = {Ryan D. Hoult and Elisa Lumantarna and Helen M. Goldsworthy} }