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Rockhampton current climate storm tide (3.07 m AHD)

Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.


Dataset citation

ANZLIC unique identifier: ANZCW0703016966

Title: Rockhampton current climate storm tide (3.07 m AHD)


Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia


Description

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.

ANZLIC search words:

  • HAZARDS Cyclones Mapping
  • HAZARDS Flood Mapping
  • HAZARDS Severe local storms Mapping

Spatial domain:

locality map

Geographic extent name: FITZROY (S) - QLD-FITZROY (S) - Local Government Areas (LGA) - Queensland

Geographic extent polygon: 150.6987 -22.771, 150.843 -22.771, 150.843 -23.3945, 150.6987 -23.3945, 150.6987 -22.771,

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:
North bounding latitude: -22.771 °
South bounding latitude: -23.3945 °
East bounding longitude: 150.843 °
West bounding longitude: 150.6987 °

Data currency

Beginning date: Not Known

Ending date: Not Known


Dataset status

Progress: Complete

Maintenance and update frequency: Not Known


Access

Stored data format:
DIGITAL - gdb ArcGIS file geodatabase ArcGIS Map Grid of Australia (MGA) GDA94
Available format type:
DIGITAL - gdb ArcGIS file geodatabase ArcGIS Map Grid of Australia (MGA) GDA94

Access constraints:

? Commonwealth of Australia (Geoscience Australia) 2013

With the exception of the Commonwealth Coat of Arms and where otherwise noted, all material

in this publication is provided under a Creative Commons Attribution 3.0 Australia Licence (http://www.creativecommons.org/licenses/by/3.0/au/)

Geoscience Australia has tried to make the information in this product as accurate as possible. However, it does not guarantee that the information is totally accurate or complete. Therefore, you should not solely rely on this information when making a commercial decision.

Free Data Download

Data quality

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.

Positional accuracy:

Data derived from a 1 m x 1 m 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. Some error has been introduced in the edge matching of tiles within the geoprocessing method to produce polygons from the source raster files.

Attribute accuracy:

Unknown

Logical Consistency:

Unknown

Completeness:

Complete


Contact information

Contact organisation: Commonwealth of Australia (Geoscience Australia) (GA)
Contact position: Manager Client Services
Mail address: Cnr Jerrabomberra Ave and Hindmarsh Dr
Mail address: GPO Box 378
Locality: Canberra
State: ACT
Country: Australia
Postcode: 2601
Telephone: 02 6249 9966
Facsimile: 02 6249 9960
Electronic mail address: sales@ga.gov.au

Metadata information

Metadata date: 2013-06-17


Additional metadata

Metadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703016966.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703016966.xml

(SLR_s1a4_3p07_Dice)

Authors:Moore, D. Dunsmore, R.
SPATIAL INFORMATION FOR THE NATION