Data

Complete Bathymetry Grid of Darwin Harbour from Various Surveys onboard the Matthew Flinders in 2010 and 2011

Geoscience Australia
Siwabessy, J.
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/83182&rft.title=Complete Bathymetry Grid of Darwin Harbour from Various Surveys onboard the Matthew Flinders in 2010 and 2011&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/83182&rft.publisher=Geoscience Australia&rft.description=Two bathymetric surveys of Darwin Harbour were undertaken during the period 17 October to 07 November 2010 and 24 June to 20 August 2011 by iXSurvey Australia Pty Ltd for Darwin Port Corporation and Department of Lands Planning, and the Department of Natural Resources, Environment, The Arts and Sport (NRETAS) in collaboration with Geoscience Australia (GA), the Darwin Port Corporation (DPC) and the Australian Institute of Marine Science (AIMS) using iXSurvey's and GA's Kongsberg EM3002D multibeam sonar systems and DPC's vessel 'Matthew Flinders'.Maintenance and Update Frequency: unknownStatement: Swath data was processed through Caris HIPS & SIPS version 7.1. First a vessel configuration file was created that the coordinates of the motion sensor and DGPS antenna and patch test offsets were recorded. A new project was then created and the vessel configuration file was attached to the project file. 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. The motion sensor, DGPS and heading data were then cleaned using a filter that averaged adjacent data to remove artifacts. 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. Then a new blank field area was defined that specified the geographic area of study and the coordinate system used. The coordinates for all the study areas were WGS84. 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. In addition, the observed tide with reference to the mean sea level and UTC time was used to correct for the tidal variations in the processing. 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. The processed data was finally exported as XYZ grid soundings and converted into ESRI grid as well as geotiff and Caris csar file.&rft.creator=Siwabessy, J. &rft.date=2015&rft.coverage=westlimit=130.69; southlimit=-12.59; eastlimit=130.94; northlimit=-12.32&rft.coverage=westlimit=130.69; southlimit=-12.59; eastlimit=130.94; northlimit=-12.32&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=EARTH SCIENCES&rft_subject=HVC_144641&rft_subject=AusSeabed&rft_subject=Marine Data Bathymetry Grid&rft_subject=marine&rft_subject=AU-NT&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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CC-BY

Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

Creative Commons Attribution 4.0 International Licence

CC-BY

4.0

http://creativecommons.org/licenses/

WWW:LINK-1.0-http--link

Australian Government Security ClassificationSystem

https://www.protectivesecurity.gov.au/Pages/default.aspx

WWW:LINK-1.0-http--link

Access:

Open

Contact Information

clientservices@ga.gov.au

Brief description

Two bathymetric surveys of Darwin Harbour were undertaken during the period 17 October to 07 November 2010 and 24 June to 20 August 2011 by iXSurvey Australia Pty Ltd for Darwin Port Corporation and Department of Lands Planning, and the Department of Natural Resources, Environment, The Arts and Sport (NRETAS) in collaboration with Geoscience Australia (GA), the Darwin Port Corporation (DPC) and the Australian Institute of Marine Science (AIMS) using iXSurvey's and GA's Kongsberg EM3002D multibeam sonar systems and DPC's vessel 'Matthew Flinders'.

Lineage

Maintenance and Update Frequency: unknown
Statement: Swath data was processed through Caris HIPS & SIPS version 7.1. First a vessel configuration file was created that the coordinates of the motion sensor and DGPS antenna and patch test offsets were recorded. A new project was then created and the vessel configuration file was attached to the project file. 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. The motion sensor, DGPS and heading data were then cleaned using a filter that averaged adjacent data to remove artifacts. 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. Then a new blank field area was defined that specified the geographic area of study and the coordinate system used. The coordinates for all the study areas were WGS84. 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. In addition, the observed tide with reference to the mean sea level and UTC time was used to correct for the tidal variations in the processing. 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. The processed data was finally exported as XYZ grid soundings and converted into ESRI grid as well as geotiff and Caris csar file.

Issued: 2015

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130.94,-12.32 130.94,-12.59 130.69,-12.59 130.69,-12.32 130.94,-12.32

130.815,-12.455

text: westlimit=130.69; southlimit=-12.59; eastlimit=130.94; northlimit=-12.32

Subjects
AU-NT | AusSeabed | Earth Sciences | HVC_144641 | Marine Data Bathymetry Grid | Published_External | geoscientificInformation | marine |

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Other Information
Download the data (caris csar)

uri : https://d28rz98at9flks.cloudfront.net/83182/83182_caris_csar.zip

Download the metadata (pdf)

uri : https://d28rz98at9flks.cloudfront.net/83182/83182_metadata.zip

Download the data (kml)

uri : https://d28rz98at9flks.cloudfront.net/83182/83182_kml.zip

Download the data (tif)

uri : https://d28rz98at9flks.cloudfront.net/83182/83182_imagery.zip

Download the data (ArcGIS-grid)

uri : https://d28rz98at9flks.cloudfront.net/83182/83182_esri_grid.zip

Download the data (ESRI ascii)

uri : https://d28rz98at9flks.cloudfront.net/83182/83182_esri_ascii.zip

Download the data (XYZ ascii)

uri : https://d28rz98at9flks.cloudfront.net/83182/83182_xyz_ascii.zip

North Perth Basin UTM49 2011 15m - 32m (tif) [10.81 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/7aaa1e87-3860-4d31-bf7f-8fad3713c024/North_Perth_Basin_UTM49_2011_15m_-_32m_MSL_cog.tif

North Perth Basin UTM50 2011 15m - 32m (tif) [19.88 MB]

uri : https://ausseabed-public-warehouse-bathymetry.s3.ap-southeast-2.amazonaws.com/L3/cfa854fd-11be-42aa-a456-190639ea3a9a/North_Perth_Basin_UTM50_2011_15m_-_32m_MSL_cog.tif

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