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Outer Darwin Harbour Marine Survey 2015: High resolution bathymetry grid

This resource contains bathymetry data for Outer Darwin Harbour collected by Geoscience Australia (GA), the Australian Institute of Marine Science (AIMS) and the Northern Territory Government (Department of Land Resource Management) during the period from 28 May and 23 June 2015 on the RV Solander (survey SOL6187/GA0351). This project was made possible through offset funds provided by INPEX-led Ichthys LNG Project to Northern Territory Government Department of Land Resource Management, and co-investment from Geoscience Australia and Australian Institute of Marine Science. The intent of this four year (2014-2018) program is to improve knowledge of the marine environments in the Darwin and Bynoe Harbour regions by collating and collecting baseline data that enable the creation of thematic habitat maps that underpin marine resource management decisions. The specific objectives of the survey were to: 1. Obtain high resolution geophysical (bathymetry) data for outer Darwin Harbour, including Shoal Bay; 2. Characterise substrates (acoustic backscatter properties, grainsize, sediment chemistry) for outer Darwin Harbour, including Shoal Bay; and 3. Collect tidal data for the survey area. Data acquired during the survey included: multibeam sonar bathymetry and acoustic backscatter; physical samples of seabed sediments, underwater photography and video of grab sample locations and oceanographic information including tidal data and sound velocity profiles. This dataset comprises multibeam bathymetry surface grid. A detailed account of the survey is provided in: Siwabessy, P.J.W., Smit, N., Atkinson, I., Dando, N., Harries, S., Howard, F.J.F., Li, J., Nicholas, W.A., Potter, A., Radke, L.C., Tran, M., Williams, D. and Whiteway, T., 2015. Outer Darwin Harbour Marine Survey 2015: GA0351/SOL6187 Post-survey report. Record 2016/008. Geoscience Australia, Canberra. http://dx.doi.org/10.11636/Record.2016.008<p><p>This dataset is not to be used for navigational purposes.

Simple

Identification info

Date (Creation)
2015-05-01T00:00:00
Date (Publication)
2016-06-22T15:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/100093

Cited responsible party
Role Organisation / Individual Name Details
Author

Siwabessy, J.

1
Author

Tran, M.

2
Author

Howard, F.J.F.

3
Author

Smit, N.

4
Author

Williams, D.K.

5
Author

Dando, N.

6
Author

Atkinson, I.

7
Author

Harries, S.

8
Owner

Australian Institute of Marine Science

Voice
Owner

Northern Territory Department of Land Resource Management

Voice
Owner

Commonwealth of Australia (Geoscience Australia)

Voice
Status
Point of contact
Role Organisation / Individual Name Details
Custodian

Siwabessy, P.J.W.

Commonwealth of Australia (Geoscience Australia)

Voice
Owner

Northern Territory Department of Land Resource Management

Commonwealth of Australia (Geoscience Australia)

Voice Voice
Owner

Australian Institute of Marine Science

Commonwealth of Australia (Geoscience Australia)

Voice Voice
Owner

Commonwealth of Australia (Geoscience Australia)

Commonwealth of Australia (Geoscience Australia)

Voice Voice
Spatial representation type
Grid

Spatial resolution

Level of detail

1m

Topic category
  • Geoscientific information

Extent

Temporal extent

Time period
2015-05-28 2015-06-23

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

Australian and New Zealand Standard Research Classification: Fields of Research
  • Earth Sciences

{1}
  • HVC_144641

Project
  • AusSeabed

{1}
  • Bathymetry

{1}
  • Marine Environmental Baselines

{1}
  • Marine Survey

{1}
  • Exclusive Economic Zone

{1}
  • 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 (caris csar)

Download the data (caris csar)

OnLine resource

Download the data (esri ascii)

Download the data (esri ascii)

OnLine resource

Download the data (esri grid)

Download the data (esri grid)

OnLine resource

Download the data (kml)

Download the data (kml)

OnLine resource

Download the data (xyz ascii)

Download the data (xyz ascii)

OnLine resource

Link to collection record

Link to collection record

OnLine resource

Darwin Harbour Bathymetry 2015 1m (zip) [2.6 GB]

Darwin Harbour Bathymetry 2015 1m (zip) [2.6 GB]

Distribution format
  • zip

    File decompression technique

    unzip

Resource lineage

Statement

The Outer Darwin Harbour Marine Survey 2015, GA-0351 SOL6187 was acquired by Geoscience Australia (GA) in collaboration with the Australian Institute of Marine Science (AIMS) and Department of Land Resource Management (Northern Territory Government) onboard the RV Solander between 28 May and 23 June 2015.

The AIMS Cruise Leader was Mr. David Williams, the NTGov Chief Investigator onboard was Dr. Neil Smit, and the GA Survey Leader was Dr. Justy Siwabessy.

This dataset was acquired and processed onboard and in the office by Justy Siwabessy using CARIS HIPS & SIPS ver 8.1.13.


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, in raw.all format, 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-52S.

7. The data was cleaned by applying several filters including surface filters to remove spikes in the data. A manual inspection of the data was undertaken as required using Subset Editor module in 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 in the optimum resolution the data can provide with reference to EGM2008 vertical datum (~ mean sea level).


Metadata:

The multibeam bathymetry was acquired by the following survey:

- Survey Name: Outer Darwin Harbour Marine Survey 2015 (GA-0351/SOL6187)

- Vessel Name: RV Solander

- Institutions: Geoscience Australia, AIMS, NTGov

- Country: Australia

- Operator: AIMS

- Multibeam system: Kongsberg EM2040C (dual)

- Year of installation: 2014

- Nominal sonar frequency: 300 kHz

- Number of beams: 800 beams

- Beamwidth across track: 1.3 degrees

- Beamwidth along track: 1.3 degrees

- Pulse length: variable

- Selectable depth range: 10 m - 50 m

- Vessel speed: 7 - 10 knots

- Start Date: 28/05/2015

- End Date: 23/06/2015

- Start Port: Darwin

- End Port: Darwin

- Grid resolution: 1 m

- Number of grids: 1

- Total surface coverage: 713.31 km2

- Vertical Datum: MSL

- Horizontal Datum: WGS84 UTM-52S

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

Hierarchy level
Dataset

Reference System Information

Reference system identifier
CRS/WGS84 (CRS:84)

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)
2008-11-12T00:00:00
Cited responsible party
Role Organisation / Individual Name Details

European Petroleum Survey Group

http://www.epsg-registry.org/

Hierarchy level
Collection hardware

Platform

Identifier

Code
RV Solander

Instrument

Identifier

Code
Kongsberg EM2040C (300 kHz)

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/835497db-9f8a-4f62-ac1e-b9452c7ddbeb

Title

GeoNetwork UUID

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

Siwabessy, P.J.W.

Commonwealth of Australia (Geoscience Australia)

Voice

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/100093

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/835497db-9f8a-4f62-ac1e-b9452c7ddbeb

Date info (Creation)
2016-04-29T12:34:34
Date info (Revision)
2018-04-22T08:34:31

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 Bathymetry Exclusive Economic Zone HVC_144641 Marine Environmental Baselines Marine Survey Published_External
Australian and New Zealand Standard Research Classification: Fields of Research
Earth Sciences

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Associated resources

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