Authors / CoAuthors
Abstract
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. <b>Value: </b>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. <b>Scope: </b>Includes terrain, shielding and topographic multipliers for national coverage. Each multiplier further contains 8 directions.
Product Type
collection
eCat Id
144645
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Resource provider
Point of contact
- Contact instructions
- Place and Communities
Keywords
- theme.ANZRC Fields of Research.rdf
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- Natural Hazards
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- HVC_144645
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- HVC - High Value Collection
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- DC2020
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- Wind
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- AS/NZS 1170.2
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- Terrain
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- Topography
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- Impact
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- Surface roughness
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- Published_External
Publication Date
2021-10-27T00:18:24
Creation Date
Security Constraints
Legal Constraints
Status
onGoing
Purpose
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.
Maintenance Information
annually
Topic Category
geoscientificInformation
Series Information
Lineage
<b>Source: </b>Computed by Geoscience Australia (GA) staff using the algorithms described in AS/NZS 1170.2 (2011). The code used to perform the calculation is available at https://github.com/GeoscienceAustralia/Wind_multipliers, or https://pid.geoscience.gov.au/dataset/ga/82481. Input data sources <br /> <br /> <b>Form: </b>It is based on tiles with dimension approximately 1 by 1 decimal degree in NetCDF format. Each multiplier (terrain, shielding and topographic) are stored in separate files.<br /> <br /> This Collection record was created to enhance the discoverability and management of the individual products contained in the collection. See the individual eCat records for product specific lineage.
Parent Information
Extents
[-44.00, -10.00, 113.00, 154.00]
Reference System
Spatial Resolution
Service Information
Associations
Source Information