Davis Coastal Seabed Mapping Survey, Antarctica (GA4301 / AAS2201 / HI468) - High Resolution Bathymetry Grids

The Davis Coastal Seabed Mapping Survey, Antarctica (GA-4301 / AAS2201 / HI468) was acquired by the Australian Antarctic Division workboat Howard Burton during February-March 2010 as a component of Australian Antarctic Science (AAS) Project 2201 - Natural Variability and Human Induced Change on Antarctic Nearshore Marine Benthic Communities.

The survey was undertaken as a collaboration between Geoscience Australia, the Australian Antarctic Division and the Australian Hydrographic Service (Royal Australian Navy). The objectives were to provide multibeam bathymetry and backscatter of the coastal region of the Vestfold Hills around Davis Station, Antarctica, to aid the understanding of sea bed character, benthic habitats, provide a basis for hydrodynamic modelling of water movement around Davis, and to update and extend the navigational charts of the region.

Identification info

Date (Publication): 2013-01-01T00:00:00

Citation identifier: Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/76729

Citation identifier: Digital Object Identifier/http://dx.doi.org/10.4225/25/562EC3979A133

Cited responsible party

Role	Organisation / Individual Name	Details
Publisher	Geoscience Australia	Canberra
Author	Spinoccia, M.	1
Author	O'Brien, P.E.	2

Point of contact

Role	Organisation / Individual Name	Details
Custodian	EGD
Owner	Commonwealth of Australia (Geoscience Australia)
Custodian	Commonwealth of Australia (Geoscience Australia)	Voice

Topic category

Geoscientific information

Extent

Temporal extent

Time period: 2010-02-15 2010-03-12

Maintenance and update frequency: Not planned

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 (ANZSRC)

Marine Geoscience

{1}

HVC_144641

Project

AusSeabed

{1}

Marine Data Bathymetry Grid

Theme

Antarctic data

Theme

bathymetry

Theme

marine

Theme

marine survey

Theme

antarctica

{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: Geoscience Australia - Antarctica webpage

Geoscience Australia - Antarctica webpage

OnLine resource: Related Product - Coastal Seabed Mapping Survey, Vestfold Hills, Antarctica, February-March 2010 (AAS 2201) - Post Survey Report

Related Product - Coastal Seabed Mapping Survey, Vestfold Hills, Antarctica, February-March 2010 (AAS 2201) - Post Survey Report

OnLine resource: Download the data (Caris csar format)

Download the data (Caris csar format)

OnLine resource: Download the data (Geotiff format)

Download the data (Geotiff format)

OnLine resource: Project metadata

Project metadata

OnLine resource: Download the complete data package

Download the complete data package

OnLine resource: Download the data (XYZ ascii format)

Download the data (XYZ ascii format)

OnLine resource: Download the data (ESRI raster format)

Download the data (ESRI raster format)

OnLine resource: Davis Harbour Antarctica Bathymetry 2010 2m (zip) [52.4 MB]

Davis Harbour Antarctica Bathymetry 2010 2m (zip) [52.4 MB]

Distribution format

zip

File decompression technique

unzip

Resource lineage

Statement

The Coastal Seabed Mapping Survey, GA-4301 AAS2201 was acquired by Geoscience Australia onboard the AAD Workboat Howard Burton from the 15th of February to the 12th of March 2010.

The Chief scientist onboard was Dr. Philip O'Brien (GA).

This dataset was acquired by Ian Atkinson and processed onboard by Philip O'Brien, Ross Bowden and Jade Paddison and further processing was conducted in the office by Michele Spinoccia, using CARIS HIPS & SIPS ver 7.1.2.

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 artifacts.

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-43S.

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 artifacts 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 artifacts and mismatches.

The tidal datum used onboard was LAT (Lowest Astronomical Tide), in the office the tidal datum was changed to MSL (mean Sea Level) to tie with the rest of the Bathymetry surveys.

9. The processed data was finally exported as grids soundings or false colored images for presentation and reporting and as final processed data in ASCII XYZ as well as geotif formats of 2m resolution.

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.

Hierarchy level: Dataset

Description

The multibeam bathymetry was acquired by the following survey:

- Survey Name: GA-4301 Coastal Seabed Mapping Survey AAS2201/ HI468, High Resolution Grids

- Vessel Name: Workboat Howard Burton

- Institution: Geoscience Australia/ AAD/ RAN

- Country: Australia

- Operator: AAD

- Multibeam system: Kongsberg EM3002D (Dual Head)

- Year of installation: 2010

- Nominal sonar frequency: 300 kHz

- Number of heads: 2

- Number of beams/head: 160 beams

- Beamwidth across track: 1.5 degree

- Beamwidth along track: 1.5 degree

- Pulse length: variable

- Selectable depth range: 0m - 340m

- Vessel speed: 3 - 5 knots

- Start Date: 15/02/2010

- End Date: 12/03/2010

- Start Port: Hobart

- End Port: Hobart

- Grid resolution: 2m

- Number of grids: 1

Extent

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/e2133896-4d6b-30d2-e044-00144fdd4fa6

Title: GeoNetwork UUID

Language: English

Character encoding: UTF8

Contact

Role	Organisation / Individual Name	Details
Point of contact	Commonwealth of Australia (Geoscience Australia)	Voice

Type of resource

Resource scope: Dataset

Name: dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier: eCatId/76729

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/e2133896-4d6b-30d2-e044-00144fdd4fa6

Metadata linkage

https://ecat.ga.gov.au/geonetwork/static/eng/catalog.search#/metadata/e2133896-4d6b-30d2-e044-00144fdd4fa6

Date info (Revision): 2018-04-22T08:44:36

Date info (Creation): 2013-07-22T00:00:00

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

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