f63cfe72-861f-4d66-a5e9-f08dd022f342 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T10:22:03 creation ISO 19115 2016 Australian National Wind Multiplier Data Collection f63cfe72-861f-4d66-a5e9-f08dd022f342 Wind multipliers are factors that transform wind speeds over open, flat terrain (regional wind speeds) to local wind speeds that consider the effects of direction, terrain (surface roughness), shielding (buildings and structures) and topography (hills and ridges). During the assessment of local wind hazards (spatial significance in the order 10's of metres), wind multipliers allow for regional wind speeds (order 10 to 100's of kilometres) to be factored to provide local wind speeds. Value: The wind multiplier data is used in modelling the impacts (i.e. physical damage) of wind-related events such as tropical cyclones (an input for Tropical Cyclone Risk assessment), thunderstorms and other windstorms. Scope: Includes terrain, shielding and topographic multipliers for national coverage. Each multiplier further contains 8 directions. {"type": "Polygon", "coordinates": [[[113.0, -44.0], [154.0, -44.0], [154.0, -10.0], [113.0, -10.0], [113.0, -44.0]]]} 113.0 154.0 -44.0 -10.0 AS/NZS 1170.2 DC2020 HVC - High Value Collection HVC_144645 Impact Natural Hazards Published_External Surface roughness Terrain Topography Wind View catalogue records associated with this collection documentDigital View catalogue records associated with this collection HTML