@conference {bnh-6385, title = {Earthquake Management Logistics for York, WA, Pre and Post Mitigation}, booktitle = {Australian Earthquake Engineering Society 2019 Conference}, year = {2019}, month = {12/2019}, address = {Newcastle}, abstract = {

Rare Australian earthquake events can cause extensive damage and present significant logistical challenges for emergency management agencies and local governments. Evidence of this can be seen from recent earthquake events that include the 2010 Kalgoorlie earthquake and the 1989 Newcastle earthquake of 30 years ago. Emergency managers do not experience damaging earthquakes on the same regular basis as storms, floods, and bushfires and therefore don{\textquoteright}t always fully understand the consequences they may face. Scenario modelling can provide insights to inform response and recovery by emergency management and recovery agencies as well as demonstrate how these impacts can be moderated by the retrofit of the most vulnerable building types.

The Shire of York is partnering with the WA Department of Fire and Emergency Services (DFES), the University of Adelaide and Geoscience Australia in a collaborative project that explores the current earthquake risk in the heritage town of York, Western Australia, and how the risk could be moderated through targeted retrofit. The project forms part of the Bushfire and Natural Hazards Cooperative Research Centre project {\textquotedblleft}Cost-effective Mitigation Strategy Development for Building Related Earthquake Risk{\textquotedblright}. This paper describes the approach taken and the predicted consequences modelled for a range of credible earthquake scenarios. Significantly, based on the recommendations from a stakeholder workshop in York on the 9thAugust 2018, it is also assessing how these consequences would be moderated in future decades through two rates of retrofit uptake in the town. This work is informing emergency management planning by DFES and the Shire of York. It is also illustrating the benefits of targeted community level retrofit to address the risk posed by the community building types most vulnerable to earthquakes.

}, keywords = {earthquake, Emergency management, modelling, retrofit, senario}, url = {https://aees.org.au/wp-content/uploads/2019/12/70-Hyeuk-Ryu.pdf}, author = {Hyeuk Ryu and Mark Edwards and Martin Wehner and Stephen Gray and Michael Griffith and Jaroslav Vaculik and Neil Corby and Trevor Allen} } @conference {bnh-4783, title = {Community strategy development for reducing earthquake risk in Western Australia}, booktitle = {AFAC18}, year = {2018}, month = {09/2018}, publisher = {Bushfire and Natural Hazards CRC}, organization = {Bushfire and Natural Hazards CRC}, address = {Perth}, abstract = {

While the earthquake hazard in Australia is generally low by world standards, its severity does include higher hazard in some regions. This is the case in the Yilgarn region east of Perth as highlighted by the 1968 Meckering Earthquake and the observed seismic activity of the region in the last seventy years. Where building construction has not considered earthquake hazard the risk to communities can be significant. This is an issue for the township of York which is WA{\textquoteright}s oldest inland settlement and has a high proportion of heritage buildings that are vulnerable to earthquake. The presence of high risk buildings of this type is a challenge for local government, emergency management and other government agencies with a role in community recovery after disasters.
In the Bushfire and Natural Hazards CRC (BNHCRC) a project called Cost-effective mitigation strategy development for building related earthquake risk is developing information on cost effective strategies for retrofitting vulnerable buildings. The project scope has been augmented to examine the effectiveness of a range of strategies for addressing high risk structures. This is a collaborative study involving a partnership approach between state and local government along with academic and government researchers under the BNHCRC. The project will utilise the mitigation approaches developed by the CRC within a range of potential roll-out options to virtually retrofit the town of York. The net benefits of each will be assessed considering avoided damage, impacts on occupants, lost rental income, and disruption to business activity and households.
In this presentation the motivation for this collaborative effort will be discussed in the context of an improved understanding of natural hazard risk in WA, the increasing focus on investing in risk mitigation as opposed to response and recovery, and the shared interest of both State and Local government to promote resilience in vulnerable communities. The outcomes of a broad stakeholder workshop convened in York on the 9th August 2018 will be described in which strategies for providing incentives for risk reduction were identified. The importance of risk information in informing property owners and communities is discussed and the need to address their apprehension in addressing vulnerability with heritage listed structures. Finally, the value of broader measures of avoided community impacts beyond the direct monetary in decision making is highlighted and the linkages being made to another BNHCRC project called Economics of natural hazards that will enable intangible (non-market) values to be included in a quantitative manner.

}, author = {Stephen Gray and Paul Martin and Mark Edwards and Michael Griffith and Hossein Derakhshan} }