Otway Basin bathymetry

This is a compilation of all the processed bathymetric datasets held by Geoscience Australia for the Otway Basin, extending from Cape Jaffa in South Australia to north-west Tasmania. This dataset includes multibeam echosounder and LIDAR data, and was gridded at two resolutions (50 and 128 m) based on optimal resolution for the depth range encountered.


The objective of this Otway Basin bathymetry dataset is to increase our understanding of the seafloor geomorphology of the region and provide a primary input dataset for the creation of numerous subsurface geophysical products. These include inputs to calibrated gravity and magnetic data to provide new insights to geological morphology and processes, inputs to 2D and 3D seismic processing for better subsurface imaging, inputs to velocity modelling for better time to depth conversions, and inputs to depth of burial 3D models to understand how sedimentary basins have evolved over geological time.


This dataset is published with the permission of the CEO, Geoscience Australia.

Not to be used for navigational purposes.

Simple

Identification info

Date (Creation)
2020-09-18
Date (Publication)
2020-11-03T02:07:01
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/144351

Identifier

Codespace

Digital Obejct Identifier

Cited responsible party
Role Organisation / Individual Name Details
Author

Spinoccia, M.
Purpose

Client request

Status
On going
Point of contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice
Point of contact

Spinoccia, M.
Resource provider

Place, Space and Communities Division
Spatial representation type

Spatial resolution

Level of detail

50 and 128m

Topic category
  • Geoscientific information

Extent

N
S
E
W


Temporal extent

Time period
1994-02-12 2020-01-15
Maintenance and update frequency
As needed

Resource format

Title

Product data repository: Various Formats

Website

Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

theme.ANZRC Fields of Research.rdf

  • EARTH SCIENCES

{1}

  • HVC_144641

{1}

  • Marine

{1}

  • Marine Data

{1}

  • Multibeam

{1}

  • AusSeabed

{1}

  • Bathymetry

{1}

  • Bathymetric grids

{1}

  • Published_External

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

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 ASCII files [375 MB]

Download the ASCII files [375 MB]

Distribution format

  • ascii

OnLine resource

Otway Basin Bathymetry 2020 50m-128m (zip) [272.7MB]

Otway Basin Bathymetry 2020 50m-128m (zip) [272.7MB]

Distribution format

  • zip

    File decompression technique

    unzip

Resource lineage

Statement

This dataset was produced following a request by an internal client in April 2020.

This dataset was produced using CARIS HIPS/SIPS v.7.1.2

The vertical datum is MSL while the horizontal datum is WGS84 UTM-54S.


For additional metadata questions, please download the Metadata.txt file located with the dataset.

Processing methodology:

The LIDAR bathymetry was received as ASCII XYZ. Using CARIS generic data parser the data was converted and merged with the rest of the multibeam bathymetry using the CARIS workflow

Following the CARIS HIPS/SIPS workflow,

1. A vessel configuration file was created where the co-ordinates of the motion sensor, DGPS antenna and patch test offsets were recorded.

2. A new project was created and the vessel configuration file attached to the project file.

3. The raw swath sonar data files, in raw.all format, for each line was imported into the project and the vessel information assigned to the data.

Ellipsoid vertical reference system is our first preference and when not available or possible to do so a tidal zone data is the next preference to be applied to the data.

4. The motion sensor, DGPS and heading data were cleaned using a filter that averaged adjacent data to remove artefacts.

5. Sound velocity profile data for each block of data were attached to the corresponding raw swath sonar data files

6. A new blank fieldsheet area was defined that specified the geographic area of study and the co-ordinate system used.

7. The data was cleaned by applying several filters that removed any spikes in the data using user-defined threshold values.

8. Data were inspected visually for each line where artifacts and noisy data had not removed by the filtering process.

9. Remaining spikes were removed manually using the swath and subset editor modules.

10. All the data, i.e. bathymetric sounding and ancillary data, were merged to produce the final processed data file.

11. A weighted grid of the processed data was then created.

12. Independent velocity corrections were performed where velocity artefacts were observed

13. The final processed grid was exported as an ASCII XYZ and 32 bit Geotif formats at 50 and 128 m resolution.

Reference System Information

Reference system identifier
EPSG/WGS 84 / UTM zone 54S (EPSG:32754)

Metadata constraints

Title

Australian Government Security Classification System

Edition date
2018-11-01T00:00:00
Website

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

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/d7169478-b82d-40c8-8934-0ea24e7c5bf2

Title

GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

 Voice
Point of contact

Spinoccia, M.

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/144351

Metadata linkage

https://ecat.ga.gov.au:80/geonetwork/srv/eng/catalog.search#/metadata/d7169478-b82d-40c8-8934-0ea24e7c5bf2

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/d7169478-b82d-40c8-8934-0ea24e7c5bf2

Date info (Creation)
2020-09-17T03:56:03
Date info (Revision)
2020-09-17T03:56:03

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 Bathymetric grids Bathymetry HVC_144641 Marine Marine Data Multibeam Published_External
theme.ANZRC Fields of Research.rdf
EARTH SCIENCES

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