Geomorphic features of the Antarctic margin and Southern Ocean 2012

Publicly available bathymetry and geophysical data has been used to map geomorphic features of the Antarctic continental margin and adjoining ocean basins at scales of 1:1-2 million. The key bathymetry datasets used were GEBCO08 and ETOPO2 satellite bathymetry (Smith & Sandwell 1997), in addition to seismic lines in key areas. Twenty-seven geomorphic units were identified based on interpretation of the seafloor bathymetry with polygons digitised by hand in ArcGIS. Seafloor features were classified largely based on the International Hydrographic Organisation (2001) classification of undersea features, and expanded to include additional features, including those likely to have specific substrate types and influence on oceanography. This approach improves the technique as a predictor of physical conditions that may influence seafloor communities. The geomorphic map has been used for developing a benthic bioregionalisation and for developing a representative system of Marine Protected Areas for East Antarctica.

Slight modifications have been made since original publication in O'Brien et al. 2009 and Post et al. 2014. These include:

- updating of some feature names;

- combining "wave affected banks" with "shelf banks"

- Combining "coastal terrance" with "island coastal terrane" as "Coastal/Shelf Terrane"

- replacing canyon vectors with polygons by using a buffer around the vectors

Further details of the original mapping can be found in:

O'Brien, P.E., Post, A.L., Romeyn, R., 2009. Antarctic-wide geomorphology as an aid to habitat mapping and locating Vulnerable Marine Ecosystems, Commission for the Conservation of Antarctic Marine Living Resources Vulnerable Marine Ecosystems Workshop, Paper WS-VME-09/10. CCAMLR, La Jolla, California, USA.

Post, A.L., Meijers, A.J.S., Fraser, A.D., Meiners, K.M., Ayers, J., Bindoff, N.L., Griffiths, H.J., Van de Putte, A.P., O'Brien, P.E., Swadling, K.M., Raymond, B., 2014. Chapter 14. Environmental Setting, In: De Broyer, C., Koubbi, P., Griffiths, H.J., Raymond, B., d'Udekem d'Acoz, C., et al. (Eds.), Biogeographic Atlas of the Southern Ocean. Scientific Committee on Antarctic Research, Cambridge, pp. 46-64.

Simple

Identification info

Date (Creation)
2016-11-08T00:00:00
Date (Publication)
2016-11-08T00:00:00
Date (Revision)
2018-06-20T00:13:46
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/102441

Citation identifier
Digital Object Identifier/http://dx.doi.org/10.4225/25/5b289b3bc07af

Cited responsible party
Role Organisation / Individual Name Details
Author

Post, A.L.

 1
Status
Point of contact
Role Organisation / Individual Name Details
Custodian

Post, A.L.

Commonwealth of Australia (Geoscience Australia)

 Voice
Spatial representation type

Spatial resolution

Level of detail

1:1000000 to 1:2000000

Topic category
  • Geoscientific information

Extent

Temporal extent

Time period
2016-11-08

Extent

N
S
E
W


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

Keywords

  • geomorphology

Keywords

  • seafloor

Keywords

  • habitat mapping

Australian and New Zealand Standard Research Classification: Fields of Research

  • Geomorphology and Regolith and Landscape Evolution

Keywords

  • 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 data (ArcGIS)

Download the data (ArcGIS)

OnLine resource

Related product: Geomorphic features of the Antarctic margin and Southern Ocean 2012 WFS

Related product: Geomorphic features of the Antarctic margin and Southern Ocean 2012 WFS

OnLine resource

Related product: Geomorphic features of the Antarctic margin and Southern Ocean 2012 WMS

Related product: Geomorphic features of the Antarctic margin and Southern Ocean 2012 WMS

OnLine resource

Related product: Geomorphic features of the Antarctic margin and Southern Ocean 2012 MapServer

Related product: Geomorphic features of the Antarctic margin and Southern Ocean 2012 MapServer

Resource lineage

Statement

Not supplied

Hierarchy level
Dataset

Reference System Information

Reference system identifier
CRS/WGS84 (CRS:84)

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)
2008-11-12T00:00:00
Cited responsible party
Role Organisation / Individual Name Details

European Petroleum Survey Group

 http://www.epsg-registry.org/

Metadata constraints

Title

Australian Government Security ClassificationSystem

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

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

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/a6b6b5f3-ceaf-4f70-a16b-c32fb8b9686b

Title

GeoNetwork UUID

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

Post, A.L.

Commonwealth of Australia (Geoscience Australia)

 Voice

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/102441

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/a6b6b5f3-ceaf-4f70-a16b-c32fb8b9686b

Date info (Creation)
2016-10-20T15:10:31
Date info (Revision)
2018-04-22T08:38:35

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

geomorphology habitat mapping seafloor
Australian and New Zealand Standard Research Classification: Fields of Research
Geomorphology and Regolith and Landscape Evolution

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