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Rockhampton current climate storm tide results buffer (Area3)

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: ANZCW0703016961

Title: Rockhampton current climate storm tide results buffer (Area3)


Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia


Description

Abstract:

This is a polygon file, one of five within the Rockhampton Regional Council coastline, which buffers the coastline by 4 km inland. This extent was use to clip the storm tide inundation extents and to visualise each of the five distinct inundation zones. 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).

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: 150.4912 -22.2806, 150.8277 -22.2806, 150.8277 -22.6557, 150.4912 -22.6557, 150.4912 -22.2806,

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

Geographic bounding box:
North bounding latitude: -22.2806 °
South bounding latitude: -22.6557 °
East bounding longitude: 150.8277 °
West bounding longitude: 150.4912 °

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 Geographic GDA94
Available format type:
DIGITAL - gdb ArcGIS file geodatabase ArcGIS Geographic 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:

This is a 4 km landward buffer of the storm tide inundation points provided by the University of Western Australia. The five buffers cover the extent of the Rockhapton Regional Council coastline and are divided, 1 through 5, into areas that contained points of similar average return interval inundation heights.

Extract from the report below. See the full report for figures full text.

The storm tide data was sourced from the National Storm Tide Database which, at the time of this study, was being developed by the University of Western Australia as part of the Haigh et al., (2012) study for the ACE CRC. The aim of this study was to estimate present day extreme total water level exceedance probabilities for Australia?s coastline. The extreme water level considered was a combination of MSL, astronomical tide and storm surge generated by both extra-tropical and tropical storm events. The modelling did not include the effects of wave setup or run-up and due to the coarse modelling grid, 10 km, the resulting ARI water heights are suited to the application at the open coast and not within estuaries (Haigh, pers comm.). The hydrodynamic model was forced with global tidal model and global meteorological fields with validation against 30 tide gauges with long records. The nearest validation gauges to Rockhampton were Mackay and Bundaberg each being in the order of 300 km to the north and south respectively of Rockhampton.

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. The points on the Rockhampton Regional Council LGA coastline are shown in Figure 65.

Cluster analysis

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 (Figure 65). Area 4 and 5 are referred to as Area A and B respectively within the storm tide summary section (p20).

Via visual inspection of the storm tide data, five clusters were identified. Further analysis of the data via a scatter plot matrix (ObjectID vs ARI water level heights) confirmed clusters of water level heights for broadly every 100 km of coastline. The scatterplot matrix is shown in Figure 66 for the extra-tropical 250 year ARI inundation results. Figure 67 shows the tropical cyclone storm tide 250 year ARI inundation points.

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.

Positional accuracy:

Visual inspection indicates a good match to coastlines of various scales.

Attribute accuracy:

As the ACE CRC study was a? probabilistic study the inundation heights include a tide level from a modelled tidal sequence. These tides were modelled with a check against validation sites around Australia for the year 1995; Mackay and Bundaberg were the closest validation sites (Haigh et al., 2012). The root mean square error for combined MSL, tide and surge modelled vs. observations were 0.45 m and 0.14 m for Mackay and Bundaberg respectively

Logical Consistency:

Not applicable.

Completeness:

Complete for the study region.


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: 2013-05-28


Additional metadata

Metadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703016961.html

Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703016961.xml

(Area3PointsBuffer)

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