Authors / CoAuthors
Unknown
Abstract
This use of this data should be carried out with the knowledge of the contained metadata and with reference to the associated report provided by Geoscience Australia with this data (Reforming Planning Processes Trial: Rockhampton 2050). A copy of this report is available from the the Geoscience Australia website (http://www.ga.gov.au/sales) or the Geoscience Australia sales office (sales@ga.gov.au, 1800 800 173). This file identifes the storm tide inundation extent for a specific Average Recurrence Interval (ARI) event. Naming convention: SLR = Sea Level Rise s1a4 = s1 = Stage 1(extra-tropical storm tide), s2 = Stage 2 (tropical cyclone storm tide) (relating to Haigh et al. 2012 storm tide study), a4 = area 4 and a5 = area 5 2p93 = Inundation height, in this case 2.93 m Dice = this data was processed with the ESRI Dice tool.
Product Type
dataset
eCat Id
77345
Contact for the resource
Custodian
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- GIS Dataset
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2013-08-21T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
notPlanned
Topic Category
geoscientificInformation
Series Information
Lineage
See the metadata attached to the data, in ArcCatalog, for a more extensive lineage statement. The storm tide data was sourced from the National Storm Tide Database supplied by the University of Western Australia as part of the Haigh et al., (2012, Technical Report Estimating present day extreme total water level exceedance probabilities around the coastline of Australia (http://www.acecrc.org.au/access/repository/resource/e8af5cd2-3bb8-1030-998b-40404adc5e91 )) study for the ACE CRC. The national storm-tide modelling was being completed whilst the Rockhampton study was being completed. At the time of carrying out the Rockhampton analysis the modelling was complete for the extra-tropical events, however the tropical storm tide modelling was incomplete; 5000 years of synthetic cyclone events had been simulated with a further 5000 years to be simulated. The model results consist of points adjacent to the coastline (231 in the LGA and 45 in the study area) with attributes at each point defining storm tide water level heights (MSL + tide + surge) for ARIs from 0.1 through to 10 000 years. Data was provided for extra-tropical and tropical storm events. Due to the number of storm-tide data points off the Rockhampton Regional Council coastline, and the difficulty in analysing and visualising 45 inundation depths for the study area, cluster analysis was carried out to identify statistically similar regions. This resulted in five areas being identified within the Rockhampton Regional Council LGA with two areas being within the study area: Area 4 and Area 5 For each area and for extra-tropical and tropical events the mean, minimum, maximum and standard deviation were calculated. Within areas four and five the mean water level height for the ARI50, ARI100, ARI250, ARI1000 and ARI10 000) events were used to identify the inundation extent on a high resolution (LiDAR derived) DEM. The LiDAR surveys were: - Gladstone, acquired 12/6/2009 to 3/7/2009 - Capricorn South, acquired 8/9/2009 to 19/10/2009 - Sunwater, acquired 6/10/2008 to 14/10/2008 Each of these three DEMs has a horizontal resolution of 1 m and a vertical accuracy of 0.15 m with a 67% confidence interval. Inundation associated with the modelled water level heights was projected using the 'bath-tub' method (Eastman, 1993). The application of this method considered the 'still-water' inundation level. The spatial queries were carried out using a python geoprocessing script to identify elevation raster cell values being equal to or less than the storm tide water heights. The resulting extents were then clipped by the QLD LGA file, to remove offshore inundation, and by the 'Area' polygon files to limit the inundation extent to 4 km as without hydrodynamic studies it is uncertain how far the storm tide would inundate inland. Both files have been provided to the Rockhampton Regional Council for consideration. At the completion of the geoprocessing it was identified that the tile edges remained in the appended polygon files and that the geoprocessing introduced a slight error so that the edges of tiles do not match precisely. The Dice tool was used to attempt to eliminate the tile edges. Due to the scale of the mismatch and the number of persisting feature edges the edges were simply not visualised in the final products. Naming convention: SLR = Sea Level Rise s1a4 = s1 = Stage 1(extra-tropical storm tide), s2 = Stage 2 (tropical cyclone storm tide) (relating to Haigh et al. 2012 storm tide study), a4 = area 4 and a5 = area 5 2p93 = Inundation height, in this case 2.93 m Dice = this data was processed with the ESRI Dice tool.
Parent Information
Extents
[-23.3945, -22.771, 150.6987, 150.843]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
Source data not available.