Geoscience Australia has developed two free and open source models; the Earthquake Risk Model (EQRM) and in collaboration with the Australian National University, the hydrodynamic model, ANUGA. Both models estimate damage and loss to residential communities from earthquake and a range of hydrodynamic hazards, such as flood and tsunami. Both models have been developed in python using scientific and GIS packages, such as Shapely, Numeric and SciPy. Both rely on an underlying geospatial data-structure to model natural hazards. EQRM estimates the ground motion and damage at a set of locations for a suite of earthquakes, representing all plausible events. Modelling the earthquake risk involves estimating the probability of losses due to building damage from earthquakes. EQRM development began in 2001 and was released as open source software on Sourceforge in 2007. ANUGA solves the conservative form of the shallow water wave equation, using a finite-volume method. This method allows the study area to be represented by an unstructured mesh with variable resolution to suit the particular problem. Development of ANUGA began in 2004 and it was released as open source in 2006 on Sourceforge. It is now being used by academic, government and commercial organisations world wide to assess tsunami and flood inundation. This presentation will outline key lessons learnt in releasing these models as free and open-source software. Examples of where these models have been used to support the government's and the community's understanding of the economic impact of earthquakes and hydrodynamic hazards will be briefly described before the current development activities outlined.

Climate change is expected to increase severe wind hazard in many regions of the Australian continent with consequences for exposed infrastructure and human populations. The National Wind Risk Assessment (NWRA) aims to identify communities subject to high wind risk under present climate, and also those communities which will be most susceptible to any climate change related exacerbation of local wind hazard, requiring an adaptation response. Australia and New Zealand wind loading standards (AS/NZS 1170.2) have established estimates of wind speeds at open atmosphere level. The current study has developed a national methodology for assessing the hazard that peak wind gusts pose at surface level. The estimation of the local wind speeds was evaluated by combining the local wind multipliers (terrain/height, shielding and topographic) for eight cardinal directions with the return period regional wind speeds from AS/NZS 1170.2 on a 25 metre grid across the areas examined for each region using remote sensing techniques. Here we seek to use the 500 year return period wind gust hazard from AS/NZS 1170.2, which is a building design document that seeks to 'envelope' possible wind effects, as a proxy for the regional hazard. These regional wind hazard estimates are envisaged to assist AS/NZS 1170.2 and wind loads for housing AS4055 in reviewing the current building standards for wind loading. The influence of all wind multipliers was aggregated to 1388 statistical local areas (SLA's) over the Australian region using a cumulative probability approach developed utilising the results from all major cities and some towns. Only wind multipliers relevant to current urban and peri-urban regions were evaluated (i.e. only regions containing residential housing were assessed). The cumulative probability approach was used to estimate and aggregate the influence of the wind multipliers for ABS mesh-block regions within SLA areas containing residential structures, for a sample of over 100 SLA's, (capital cities and major towns). This approach was generalised to the entire Australian region by matching non-sampled SLA's with sampled SLA's considering the percent slope, aspect (direction of slope), building density, vegetation cover and the wind loading region. Results in the form of mapped return period gust wind hazard at the SLA level will be presented for both current climate and a range of climate change scenarios, and uncertainties with the present methodology discussed.

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours, localities and some administrative boundaries. Product Specifications Coverage: Australia is covered by more than 3000 x 1:100 000 scale maps, of which 1600 have been published as printed maps. Unpublished maps are available as compilations. Currency: Ranges from 1961 to 2009. Average 1997. Coordinates: Geographical and either AMG or MGA coordinates. Datum: AGD66, GDA94; AHD Projection: Universal Transverse Mercator UTM. Medium: Printed maps: Paper, flat and folded copies. Compilations: Paper or film, flat copies only.

This map shows the boundary of the Maritime Security Zones for each port for the purpose of the Maritime Transport & Office Security Act 2003. 1 Sheet (Colour) May 2010 Not for sale or public distribution Contact Manager LOSAMBA project, PMD

This map shows the boundary of the Maritime Security Zones for each port for the purpose of the Maritime Transport & Office Security Act 2003. 1 Sheet (Colour) February 2010 Not for sale or public distribution Contact Manager LOSAMBA project, PMD

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Describes the global earthquake model (GEM) and how GA will work with GEM

The final report provides summary information from the literature review, regulatory review and end-use analysis reports along with key recommendations for any further work on revising national guidelines for management of groundwater quality.

An application dated 18th November 2010 for verification of a reference standard of measurement under Regulation 12 of the National Measurement Regulations 1999 was received from the Land and Property Management Authority, NSW for verification of GDA94 position on their CORSnet monuments. This report documents the processing and analysis of GPS data observed by the CORSnet-NSW GPS stations during a 7-day period from 7th November to 13th November 2010 (day of year 311 to 317) for two stations (i.e. CNDO and GFTH) to satisfy the position verification requirements.

The Geocentric Datum of Australia 1994 (GDA94)is the official Australian coordinate system and was implemented in 1995 by the Intergovernmental Committee on Surveying and Mapping (ICSM) (ICSM 1998). This article is published in the Journal of Applied Geodesy 4 (2010), no. 4, pp. 189-199. Also available online at www.reference-global.com/loi/jag