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Geographe Marine Park Bathymetry - 5m Resolution Grid

<p>Australia has established a network of 58 marine parks within Commonwealth waters covering a total of 3.3 million square kilometres, or 40 per cent of our exclusive economic zone (excluding Australian Antarctic Territory). These parks span a range of settings, from near coastal and shelf habitats to abyssal plains. Parks Australia manages the park network through management plans that came into effect for all parks on 1 July 2018. Geoscience Australia is contributing to their management by collating and interpreting existing environmental data, and through the collection of new marine data. “Eco-narrative” documents are being developed for those parks, where sufficient information is available, delivering collations and interpretations of seafloor geomorphology, oceanography and ecology. Many of these interpretations rely on bathymetric grids and their derived products, including those in this data release. <p>Bathymetry grids: <p>The bathymetry of the marine parks was created by compiling and processing Geoscience Australia’s bathymetry data holding gridded at the optimum resolution depending of the vessel’s sonar system. <p>The bathymetry of the park is illustrated by a panchromatic geotiff image, developed by combining the bathymetric data with a hillshade image. <p> Morphological Surfaces: <p>Geoscience Australia has developed a new marine seafloor classification scheme, which uses the two-part seafloor mapping morphology approach of Dove et al (2016). This new scheme is semi-hierarchical and the first step divides the slope of the seafloor into three Morphological Surface categories (Plain, <2°; Slope, 2-10°; Escarpment, >10°). <p>Dove, D., Bradwell, T., Carter, G., Cotterill, C., Gafeira, J., Green, S., Krabbendam, M., Mellet, C., Stevenson, A., Stewart, H., Westhead, K., Scott, G., Guinan, J., Judge, M. Monteys, X., Elvenes, S., Baeten, N., Dolan, M., Thorsnes, T., Bjarnadóttir, L., Ottesen, D. (2016). Seabed geomorphology: a twopart classification system. British Geological Survey, Open Report OR/16/001. 13 pages. <p>This research is supported by the National Environmental Science Program (NESP) Marine Biodiversity Hub through Project D1.<p><p>This dataset is not to be used for navigational purposes.

Simple

Identification info

Date (Creation)
2018-06-01T00:00:00
Date (Publication)
2018-06-25T06:20:03
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/121158

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.4225/25/5b30890921c93

Cited responsible party
Role Organisation / Individual Name Details
Custodian

Geoscience Australia

Purpose

Not to be used for navigational purposes.


This dataset is published with the permission of the CEO, Geoscience Australia

Status
Point of contact
Role Organisation / Individual Name Details
Custodian

Commonwealth of Australia (Geoscience Australia)

Commonwealth of Australia (Geoscience Australia)

Voice Voice
Point of contact

Spinoccia, M.

Commonwealth of Australia (Geoscience Australia)

Voice
Spatial representation type

Spatial resolution

Level of detail

5m

Topic category
  • Geoscientific information

Extent

Temporal extent

Time period
2015-05-23 2015-05-23

Extent

N
S
E
W


Maintenance and update frequency
As needed

Resource format

Title

Product data repository: Various Formats

Website

Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

{1}
  • HVC_144641

Project
  • AusSeabed

{1}
  • bathymetry

{1}
  • marine

{1}
  • bathymetry grid

{1}
  • marine data

{1}
  • National Environmental Science Program

{1}
  • Marine Biodiversity Hub

Product
  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified
Language
English
Character encoding
UTF8

Distribution Information

Distributor contact
Role Organisation / Individual Name Details
Distributor

Commonwealth of Australia (Geoscience Australia)

Voice
OnLine resource

Download the data package

Download the data package

OnLine resource

Geographe Marine Park Bathymetry 2018 5m (tif) [103.45 MB]

Geographe Marine Park Bathymetry 2018 5m (tif) [103.45 MB]

Resource lineage

Statement

The Geographe Marine Park Bathymetry dataset was created by compiling GA's bathymetry data holding.

The bathymetry consist of the following surveys:

1- GA-5007 Two Rocks to Cape Naturaliste LIDAR bathymetry survey.

2- AIMS Geographe Bay bathymetry dataset that has been downloaded from PAWSEY in ASCII XYZ format.


The dataset was processed in the Geoscience Australia by Michele Spinoccia, using CARIS HIPS & SIPS ver 7.1.2.


Metadata:


- Grid resolution: 5 m

- Number of grids: 1

- Total surface coverage: 828.31 km2

- Vertical Datum: MSL

- Horizontal Datum: WGS84 UTM-50S

- Use Limitation: This dataset is not to be used for navigational purposes.

- This dataset is published with the permission of the CEO, Geoscience Australia


Processing:

1. First a vessel configuration file was created where the co-ordinates of the motion sensor and DGPS antenna and patch test offsets were recorded.

2. A new project was then created and the vessel configuration file was attached to the project file.

3. The raw swath sonar data, for each line was then imported into the project and the vessel information assigned to the data.

4. The motion sensor, DGPS and heading data were then cleaned using a filter that averaged adjacent data to remove artefacts.

5. Different sound velocity profiles data for each block were attached to the corresponding raw swath sonar data files to correct the depths for changes in the speed of sound through the water column.

6. Then a new blank field area was defined that specified the geographic area of study and the co-ordinate system used. The co-ordinates for the study areas were WGS84 UTM-50S.

7. The data was cleaned by applying several filters that removed any remaining spikes in the bathymetry data using user defined threshold values. A visual inspection of the data for each line was then undertaken where artefacts and noisy data not removed by the filtering process were removed manually using Swath and subset editors modules of the Caris HIPS/SIPS software.

8. All the data for each bathymetric, motion sensor, DGPS, heading, tide and sound velocity profile data were merged to produce the final processed data file. A weighted grid of the processed data was then created for each Block.

In GA the tide was applied to the grid to correct for tidal variations and velocity corrections were performed to correct for different artefacts and mismatches.

9. The processed data was finally exported as grids soundings or false coloured images for presentation and reporting and as final processed data in in ASCII XYZ as well as geotif formats at the optimum resolution the data can provide.

10.Using CARIS Base editor 4.0 the grids were exported as ESRI ASCII grid, then imported into ARC catalogue/info to create a raster file for the entire survey as well as Google Earth KMZ.

Hierarchy level
Dataset

Metadata constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/776929d7-3251-4c57-a5ef-50787ef1b4f4

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Custodian

Spinoccia, M.

Commonwealth of Australia (Geoscience Australia)

Voice

Type of resource

Resource scope
Dataset
Name

Geographe Marine Park Bathymetry - 5m Resolution Grid

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/121158

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/776929d7-3251-4c57-a5ef-50787ef1b4f4

Date info (Creation)
2018-06-01T05:47:28
Date info (Revision)
2018-06-01T05:53:43

Metadata standard

Title

AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

Spatial extent

N
S
E
W


Keywords

AusSeabed HVC_144641 Marine Biodiversity Hub National Environmental Science Program Published_External bathymetry bathymetry grid marine marine data

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