High Resolution Bathymetry Grids - Caswell Sub-basin, Browse Basin Marine Survey (GA0345/GA0346/TAN1411)

Geoscience Australia conducted a marine survey (GA-0345 andGA-0346 /TAN1411) in Commonwealth waters of the north-eastern Browse Basin (Caswell Sub-basin) between 9 October and 9 November 2014. The purpose of the survey was to collect pre-competitive marine data to support a CO2 storage assessment in the Browse Basin, with particular emphasis on the integrity of seals overlying select CO2 storage plays.

Data acquisition was undertaken as part of the National CO2 Infrastructure Plan (NCIP), administered by the Department of Industry and Science. The survey was conducted in 3 Legs aboard the New Geoscience Australia (GA) conducted a marine survey (GA0345/GA0346/TAN1411) of the north-eastern Browse Basin (Caswell Sub-basin) between 9 October and 9 November 2014 to acquire seabed and shallow geological information to support an assessment of the CO2 storage potential of the basin. The survey, undertaken as part of the Department of Industry and Science's National CO2 Infrastructure Plan (NCIP), aimed to identify and characterise indicators of natural hydrocarbon or fluid seepage that may indicate compromised seal integrity in the region.

The survey was conducted in three legs aboard the New Zealand research vessel RV Tangaroa, and included scientists and technical staff from GA, the NZ National Institute of Water and Atmospheric Research Ltd. (NIWA) and Fugro Survey Pty Ltd. Shipboard data (survey ID GA0345) collected included multibeam sonar bathymetry and backscatter over 12 areas (A1, A2, A3, A4, A6b, A7, A8, B1, C1, C2b, F1, M1) totalling 455 km2 in water depths ranging from 90 - 430 m, and 611 km of sub-bottom profile lines. Seabed samples were collected from 48 stations and included 99 Smith-McIntyre grabs and 41 piston cores. An Autonomous Underwater Vehicle (AUV) (survey ID GA0346) collected higher-resolution multibeam sonar bathymetry and backscatter data, totalling 7.7 km2, along with 71 line km of side scan sonar, underwater camera and sub-bottom profile data. Twenty two Remotely Operated Vehicle (ROV) missions collected 31 hours of underwater video, 657 still images, eight grabs and one core.

This catalogue entry refers to bathymetry data acquired during survey GA0345/GA0346/TAN1411.

Simple

Identification info

Date (Creation)
2015-01-01T00:00:00
Date (Publication)
2016-06-06T13:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/83696

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.4225/25/5754FBB59AED7

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Geoscience Australia

 Canberra
Author

Spinoccia, M.

 1
Point of contact
Role Organisation / Individual Name Details
Custodian

RD
Owner

Commonwealth of Australia (Geoscience Australia)
Custodian

Commonwealth of Australia (Geoscience Australia)

 Voice
Topic category
  • Geoscientific information

Extent

N
S
E
W


Maintenance and update frequency
As needed
Australian and New Zealand Standard Research Classification (ANZSRC)

  • Marine Geoscience

{1}

  • HVC_144641

Project

  • AusSeabed

{1}

  • Marine Data Bathymetry Grid

Theme

  • Bathymetry

Theme

  • marine survey

Theme

  • geological storage of CO2

Theme

  • marine environmental baselines

Theme

  • Exclusive Economic Zone

{1}

  • Australian EEZ

{1}

  • Published_External

Resource constraints

Title

Creative Commons Attribution-NonCommercial 4.0 International Licence

Alternate title

CC-BY-NC

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 raster grid)

Download the data (esri raster grid)

OnLine resource

Download the data (geotif)

Download the data (geotif)

OnLine resource

Download the data (kml)

Download the data (kml)

OnLine resource

Download the metadata (pdf)

Download the metadata (pdf)

OnLine resource

Download the data (xyz ascii)

Download the data (xyz ascii)

OnLine resource

Caswell Sub-basin - Browse Basin CO2 data package

Caswell Sub-basin - Browse Basin CO2 data package

OnLine resource

Caswell Basin Bathymetry 2015 1m - 7m (zip) [1.5 GB]

Caswell Basin Bathymetry 2015 1m - 7m (zip) [1.5 GB]

Distribution format

  • zip

    File decompression technique

    unzip

Resource lineage

Statement

The Browse Basin Marine Survey 2014, GA-0345 TAN1411 was acquired by Geoscience Australia onboard the RV Tangaroa from the 9th of October to the 12th of November 2014.

The Chief scientist onboard was Dr. Chris Nicholson.

This dataset was acquired onboard by Justy Siwabessy 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 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 and 51S.

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 colored images for presentation and reporting and as final processed data in ASCII XYZ, KML and geotif formats of 1, 2 and 7m 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: Browse Basin Marine Survey 2014,(GA-0345- and GA-0346/TAN1411) - Vessel Name: RV Tangaroa - Institution: Geoscience Australia - Country: Australia - Operator: NIWA - Multibeam system: Kongsberg EM302/ EM2000 (AUV) - Year of installation: 2010 - Nominal sonar frequency: 30 kHz/ 200 kHz (AUV) - Number of beams: 288 beams/ 111 beams (AUV) - Beamwidth across track: 1 degree/ 1.5 degree (AUV) - Beamwidth along track: 2 degree/ 2.5 degree (AUV) - Pulse length: variable - Selectable depth range: 10m - 7000m / 3000m (AUV) - Vessel speed: 7 - 8 knots - Start Date: 09/10/2014 - End Date: 12/11/2014 - Start Port: Darwin - End Port: Darwin - Grid resolution: 2 and 7m shipborne/ 1m (AUV) - Number of grids: 7 - Total surface coverage: 3848.93 km2 for shipborne bathymetry (port to port)/ and 9.6 km2 (AUV) - Vertical Datum: MSL - Horizontal Datum: WGS84 UTM-52S and 51S - Use Limitation: This dataset is not to be used for navigational purposes.

Extent

N
S
E
W


Hierarchy level
Collection hardware

Platform

Identifier

Code
RV Tangaroa

Instrument

Identifier

Code
EM302

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/16e2ee4b-bea2-0659-e053-12a3070a8c4e

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/83696

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/16e2ee4b-bea2-0659-e053-12a3070a8c4e

Date info (Revision)
2018-04-22T08:18:25
Date info (Creation)
2015-05-25T00:00:00

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

 
 

Spatial extent

N
S
E
W


Keywords

AusSeabed Australian EEZ Bathymetry Exclusive Economic Zone HVC_144641 Marine Data Bathymetry Grid Published_External geological storage of CO2 marine environmental baselines marine survey

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