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Southern Great Barrier Reef Shelf Bathymetry 2m - 64m 2020 (FK201122/20200016S)

This resource includes bathymetry data acquired during the Southern Depths of the Great Barrier Reef survey using Kongsberg EM302 and EM710 multibeam sonar systems.

The Southern Great Barrier Reef Shelf Bathymetry survey (FK201122/GA4867); also known as Ice Age Geology of the Great Barrier Reef survey; was led by Queensland University of Technology aboard the Schmidt Ocean Institute's research vessel Falkor from the 22nd of November to the 21st of December 2020.

The primary objective of the expedition was to explore ancient undersea features that formed during the last Ice Age, when sea level was around 125 m lower than it is today. While once an exposed part of the Australian coast, these shelf areas were submerged as Earth’s glaciers and ice sheets melted and sea level rose, flooding Australia’s continental shelf.

Another objective was to find the southern extent of an older limestone platform that may represent the approximately 20 million-year-old base upon which the present Great Barrier Reef has grown.

This V1 dataset contains seven 2 to 64m resolution 32-bit floating point geotiff files of the Southern Great Barrier Reef Shelf Bathymetry survey area, derived from the processed EM302 and EM710 bathymetry data, using CARIS HIPS and SIPS software.

This dataset is not to be used for navigational purposes.

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

Simple

Identification info

Date (Publication)
2020-09-22T22:44:49
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/145133

Citation identifier
Digital Object Identifier/https://dx.doi.org/10.26186/145133

Cited responsible party
Role Organisation / Individual Name Details
Author

Mcneil, M.

Place and Communities Internal Contact
Publisher

Commonwealth of Australia (Geoscience Australia)

Voice
Purpose

Make the bathymetry data available to the public

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

Commonwealth of Australia (Geoscience Australia)

Voice
Owner

Schmidt Ocean Institute

mailto:deborah.s@soi-team.org External Contact
Custodian

Commonwealth of Australia (Geoscience Australia)

Voice
Point of contact

Spinoccia, M.

Place and Communities Internal Contact
Principal investigator

Mcneil, M.

Place and Communities Internal Contact
Processor

Spinoccia, M.

Place and Communities Internal Contact
Resource provider

Place and Communities Division

External Contact
Spatial representation type

Spatial resolution

Level of detail

2 to 64m

Topic category
  • Geoscientific information

Extent

N
S
E
W


Temporal extent

Time period
2020-11-22 2020-12-21
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

Theme
  • Marine

{1}
  • Bathymetry

Instrument
  • Multibeam

Product
  • Bathymetric grids

Project
  • AusSeabed

{1}
  • Published_Internal

Product
  • Marine Data

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

Southern Great Barrier Reef Shelf Bathymetry 2m - 64m 2020 (zip) [2 GB]

Southern Great Barrier Reef Shelf Bathymetry 2m - 64m 2020 (zip) [2 GB]

Distribution format
  • zip

    File decompression technique

    unzip

OnLine resource

Link to voyage report

Link to voyage report

Distribution format

Resource lineage

Statement

<BR>The Chief scientist onboard was Mardi McNeil.

<BR>This dataset was produced using CARIS HIPS/SIPS version 11.3.7

<BR>For any metadata questions, please download the Metadata.txt file located with the dataset.

<BR>

<BR>Processing methodology:

<BR>

<BR>Following the CARIS HIPS/SIPS workflow,

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

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

<BR>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.

<BR>EGM2008 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

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

<BR>5. Sound velocity profiles data for each block of data were attached to the corresponding raw swath sonar data files.

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

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

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

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

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

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

<BR>12. Independent velocity corrections were performed where velocity artefacts were observed.

<BR>13. The final processed grid was exported as a 32 bit floating point Geotif format at 2, 4, 8, 11, 16, 24 and 64m resolution referenced to egm2008 ~ to mean sea level.

Reference System Information

Reference system identifier
EPSG/WGS 84 / UTM zone 56S (EPSG:32756)

Hierarchy level
Collection hardware

Platform

Identifier

Code
RV Falkor

Instrument

Identifier

Code
Kongsberg EM302

Instrument

Identifier

Code
Kongsberg EM710

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/f4f26ed2-6a92-4198-aed6-53c53f40185b

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.

Place and Communities Internal Contact

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/145133

Metadata linkage

https://ecat.ga.gov.au:80/geonetwork/srv/eng/catalog.search#/metadata/fa6ee713-05bf-4f94-9ee8-2c7ee2d090f5

Metadata linkage

https://ecat.ga.gov.au:80/geonetwork/srv/eng/catalog.search#/metadata/cc676c4f-3793-48a4-bdca-6c47f544da77

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/f4f26ed2-6a92-4198-aed6-53c53f40185b

Date info (Creation)
2020-09-02T06:12:14
Date info (Revision)
2020-09-02T06:12:14

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/144285

 
 

Spatial extent

N
S
E
W


Keywords

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

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