Dataset DOI

Abstract

The compilation and processing of GA's single and multibeam bathymetry data in the Gippsland Basin was produced following a request by an internal client in November 2013. It is an updated version of the 2012 bathymetry grid of the Gippsland basin.
Google map showing geographic bounding box with values North bound -37.41 East bound 150.51 West bound 146.22 South bound -39.67

Product Type/Sub Type

dataset

Constraints

Creative Commons Attribution 4.0 International Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2013-01-01T00:00:00

Product Type

dataset

Topic Category

geoscientificInformation

GA Catalogue Number

78624 Product http://www.ga.gov.au/metadata-gateway/metadata/record/78624/

Keywords

Marine Data
Bathymetry Grid
bathymetry
geophysics
continental margins
continental shelf
marine
VIC
Geophysics

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-37.41
East bound
150.51
West bound
146.22
South bound
-39.67

TEMPORAL EXTENT

1997-04-11 / 2013-10-01

Lineage

- Grid resolution: 50 and 100m - Number of grids: 2 - Total surface coverage: 32,287.53 km2 - Vertical Datum: MSL - Horizontal Datum: WGS84 UTM-55S - Use Limitation: This dataset is not to be used for navigational purposes. This dataset was compiled and processed in GA by Michele Spinoccia, using CARIS HIPS & SIPS ver 7.1.2. 1. First a vessel configuration file was created for each vessel 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 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-55S. 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. 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 of 50 and 100m 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.

Digital Transfer Options

onLine

Distributor

Role
distributor
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Source Description

The grids were compiled from the following surveys: # Survey Name Vessel Name Multibeam System Institution Start Date End Date Start Port End Port 1 GA-0210_SOJN07MV RV_Melville SeaBeam 2000 SCRIPPS 10/4/1997 17/4-1997 Hobart Melbourne 2 GA-0222_Austrea1 N/O_L'Atalante EM12 Dual IFREMER 18/12/1999 11/1/2000 Noumea Hobart 3 GA-0224_SS012000 RV_S_Surveyor EM300 CSIRO 4/4/2000 21/5/2000 Hobart Hobart 4 GA-2355_SS042004 RV_S_Surveyor EM300 CSIRO 10/4/2004 29/4/2004 Hobart Sydney 5 GA-2356_SST012004 RV_S_Surveyor EM300 CSIRO 27/6/2004 29/6/2004 Sydney Hobart 6 GA-2396_VT82 RV_M_Dufresne TSM5265 IPEV 27/2/2006 6/3/2006 Sydney Albany 7 GA-2414_SST032006 RV_S_Surveyor EM300 CSIRO 27/10/2006 29/10/2006 Sydney Hobart 8 GA-2448_SST072007 RV_S_Surveyor EM300 CSIRO 24/11/2007 27/11/2007 Newcastle Hobart 9 GA-2467_SST012008 RV_S_Surveyor EM300 CSIRO 9/4/2008 14/4/2008 Hobart Sydney 10 GA-2480_SST022004 RV_S_Surveyor EM300 CSIRO 13/8/2004 16/8/2004 Hobart Sydney 11 GA-2495_ST032009 RV_S_Surveyor EM300 CSIRO 10/10/2009 15/10/2009 Hobart Sydney 12 GA-4327_SST032010 RV_S_Surveyor EM300 CSIRO 16/9/2010 21/9/2010 Hobart Sydney 13 GA-4333_SST042010 RV_S_Surveyor EM300 CSIRO 31/10/2010 7/11/2010 Sydney Hobart 14 GA-4349_SS2011e01 RV_S_Surveyor EM300 CSIRO 25/2/2011 1/3/2011 Hobart Sydney 15 GA-4352_SS2011t01 RV_S_Surveyor EM300 CSIRO 5/5/2011 12/5/2011 Hobart Brisbane 16 GA-4385_SS2012t01 RV_S_Surveyor EM300 CSIRO 12/4/2012 18/4/2012 Hobart Brisbane 17 GA-4403_SS2013t01 RV_S_Surveyor EM300 CSIRO 27/3/2013 3/3/2013 Sydney Hobart 18 GA-4412_SS2013t04 RV_S_Surveyor EM300 CSIRO 22/9/2013 28/9/2013 Brisbane Hobart 19 28 3D seismic survey and 39 2D seismic survey that contain single beam water depth within the desired Gippsland Basin area of interest. 20- Victorian LIDAR up to 20m depth.

Metadata File Identifier

ed22649e-c5f9-1f7d-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address