Authors / CoAuthors
Howard, F.J.F.
Abstract
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 high-resolution imagery taken of piston cores. A total of 20 piston cores collected in water depths between 154-445 m on the continental shelf, were imaged using the Geotek GEOSCAN IV line scan camera. Each core section was imaged at 200 lines per cm, corresponding to a 50 micron pixel size, to produce a single JPG image for each section. For more information on how the piston cores were collected please refer to the post-survey report (follow link at right), or for more information on the MSCL-S please refer to the manual, (follow link at right).
Product Type
dataset
eCat Id
89742
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- Data Package
- ( Theme )
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- Exclusive Economic Zone
- ( Theme )
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- marine environmental baselines
- ( Theme )
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- marine survey
- ( Theme )
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- sedimentology
- ( Theme )
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- geological storage of CO2
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- Australian EEZ
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Marine Geoscience
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- Published_External
Publication Date
2015-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
asNeeded
Topic Category
oceans
Series Information
Lineage
Version 1
Parent Information
Extents
[-14.2865, -12.8678, 122.3883, 124.6521]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
Dataset collected in WGS84 UTM51S. Source extent for the metadata record however is in GDA94 to be consistent with other source extents for GA products. 122.3883 124.6521 -14.2865 -12.8678