Data

Browse Basin Leveque Shelf Environmental Survey (GA-0340/ SOL5754) (NCIP Program) - High Resolution Bathymetry Grids

Geoscience Australia
Spinoccia, M. ; Yule, C.
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/79576&rft.title=Browse Basin Leveque Shelf Environmental Survey (GA-0340/ SOL5754) (NCIP Program) - High Resolution Bathymetry Grids&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/79576&rft.publisher=Geoscience Australia&rft.description=Geoscience Australia undertook a marine survey of the Leveque Shelf (survey number (GA-0340/SOL5754), a sub-basin of the Browse Basin, in May 2013. This survey provides seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Jamieson Formation (the seal unit overlying the main reservoir).Maintenance and Update Frequency: asNeededStatement: The Browse Basin survey, GA-0340 SOL5754 was acquired by Geoscience Australia onboard the RV Solander from the 01st of May to the 30th of May 2013. The Chief scientist onboard was Dr. Scott Nichol and Dr. Riko Hashimoto. This dataset was acquired and processed onboard by Justy Siwabessy, Kim Picard and Olivia Wilson 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-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 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 colored images for presentation and reporting and as final processed data in 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. 11. New version was created using Caris v11.3.16 to reference vertical datum to EGM2008 and horizontal datum to EPSG 4326 and gridded according to AusSeabed banded depth definition (AusSeabed_DepthRanges_2019.txt).&rft.creator=Spinoccia, M. &rft.creator=Yule, C. &rft.date=2014&rft.coverage=westlimit=121; southlimit=-18.02; eastlimit=122.22; northlimit=-15.4; projection=WGS84 (CRS:84)&rft.coverage=westlimit=121; southlimit=-18.02; eastlimit=122.22; northlimit=-15.4; projection=WGS84 (CRS:84)&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=ENVIRONMENTAL SCIENCES&rft_subject=HVC_144641&rft_subject=AusSeabed&rft_subject=Marine Data Bathymetry Grid&rft_subject=bathymetry&rft_subject=marine survey&rft_subject=environmental&rft_subject=continental shelf&rft_subject=marine&rft_subject=WA&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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Contact Information

clientservices@ga.gov.au

Brief description

Geoscience Australia undertook a marine survey of the Leveque Shelf (survey number (GA-0340/SOL5754), a sub-basin of the Browse Basin, in May 2013. This survey provides seabed and shallow geological information to support an assessment of the CO2 storage potential of the Browse sedimentary basin. The basin, located on the Northwest Shelf, Western Australia, was previously identified by the Carbon Storage Taskforce (2009) as potentially suitable for CO2 storage. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The principal aim of the Leveque Shelf marine survey was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Leveque Shelf area that may extend to the seabed. The survey also mapped seabed habitats and biota to provide information on communities and biophysical features that may be associated with seepage. This research, combined with deeper geological studies undertaken concurrently, addresses key questions on the potential for containment of CO2 in the basin's proposed CO2 storage unit, i.e. the basal sedimentary section (Late Jurassic and Early Cretaceous), and the regional integrity of the Jamieson Formation (the seal unit overlying the main reservoir).

Lineage

Maintenance and Update Frequency: asNeeded
Statement: The Browse Basin survey, GA-0340 SOL5754 was acquired by Geoscience Australia onboard the RV Solander from the 01st of May to the 30th of May 2013.
The Chief scientist onboard was Dr. Scott Nichol and Dr. Riko Hashimoto.
This dataset was acquired and processed onboard by Justy Siwabessy, Kim Picard and Olivia Wilson 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-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 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 colored images for presentation and reporting and as final processed data in 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.
11. New version was created using Caris v11.3.16 to reference vertical datum to EGM2008 and horizontal datum to EPSG 4326 and gridded according to AusSeabed banded depth definition (AusSeabed_DepthRanges_2019.txt).

Issued: 2014

Data time period: 2013-05-01 to 2013-05-30

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122.22,-15.4 122.22,-18.02 121,-18.02 121,-15.4 122.22,-15.4

121.61,-16.71

text: westlimit=121; southlimit=-18.02; eastlimit=122.22; northlimit=-15.4; projection=WGS84 (CRS:84)

Subjects
AusSeabed | Environmental Sciences | HVC_144641 | Marine Data Bathymetry Grid | Published_External | WA | bathymetry | continental shelf | environmental | geoscientificInformation | marine | marine survey |

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Other Information
Download the data (ArcGIS-grid)

uri : https://d28rz98at9flks.cloudfront.net/79576/79576_ESRI_Raster_Grids.zip

Download the data (XYZ ascii)

uri : https://d28rz98at9flks.cloudfront.net/79576/79576_ASCII_XYZ.zip

Download the data (csar)

uri : https://d28rz98at9flks.cloudfront.net/79576/79576_CARIS_CSAR.zip

Download the data (tif)

uri : https://d28rz98at9flks.cloudfront.net/79576/79576_Geotifs.zip

Download the metadata (pdf)

uri : https://d28rz98at9flks.cloudfront.net/79576/79576_Metadata_1.zip

Link to Data package - Seabed environments and shallow geology of the Leveque Shelf

uri : https://pid.geoscience.gov.au/dataset/ga/83727

Area 1 2013 2m (tif) [177.86 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/539841e7-694e-4e00-adf3-6311b62fb303/Leveque_Shelf_Bathymetry_Area1_2013_2m_cog.tif

Area 2 2013 2m (tif) [194.12 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/bd7877dd-8cfb-4bc8-855a-25ec98c3e378/Leveque_Shelf_Bathymetry_Area2_2013_2m_cog.tif

Area 10 2013 2m (tif) [60.4 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/1bb2f502-308d-4c9b-b7ac-3c4fd46f776d/Leveque_Shelf_Bathymetry_Area10_2013_2m_cog.tif

Area 3 2013 2m (tif) [225.9 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/1167b5b9-93f8-449d-bd8e-0a141ff3cd0a/Leveque_Shelf_Bathymetry_Area3_2013_2m_cog.tif

Area 4 2013 2m (tif) [158.22 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/583a7f53-da28-48a7-94b4-e861b652d6e6/Leveque_Shelf_Bathymetry_Area4_2013_2m_cog.tif

Area 5 2013 2m (tif) [211.73 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/6c22ae9b-0963-4d22-af78-3d763d9d3458/Leveque_Shelf_Bathymetry_Area5_2013_2m_cog.tif

Trans 1 2013 2m (tif) [113.52 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/c46ec637-56ae-4c73-bd1e-f3f66609da9a/Leveque_Shelf_Bathymetry_Trans1_2013_2m_cog.tif

Trans 2 2013 2m (tif) [69.26 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/4571d518-3707-4280-8a34-95bd44cdefe0/Leveque_Shelf_Bathymetry_Trans2_2013_2m_cog.tif

Download the geotiff [583.06 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/ebe4eff7-ea69-4a0f-8dc8-8c38798d1cc8/Leveque_Shelf_Bathymetry_v1_2013_3m_Unknown_cog.tif

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