Data and Publications Search  

Geomorphic features of the Antarctic margin and Southern Ocean 2012  


Authors / CoAuthors

Post, A.L.

Abstract

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.

Product Type

dataset

eCat Id

102441

Contact for the resource

  Custodian

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Contact instructions
1

Digital Object Identifier

http://dx.doi.org/10.4225/25/5b289b3bc07af

Keywords

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

Publication Date

2016-11-08T00:00:00

Creation Date

2016-11-08T00:00:00

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - license

Use - license

Status

Purpose

Maintenance Information

asNeeded

Topic Category

geoscientificInformation

Series Information

Lineage

Not supplied

Parent Information

Extents

[-80, -45, -180, 180]

Reference System

WGS84 (CRS:84)

Spatial Resolution

1:1000000 to 1:2000000

Service Information

Associations

Downloads and Links

Download the data (ArcGIS)  

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 WMS  

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

Source Information



  • Copyright
  • Privacy
  • Accessibility
  • Sitemap
  • Information Publication Scheme
  • Freedom of Information
Geoscience Australia acknowledges the traditional owners of the country throughout Australia and their continuing connection to land, sea and community. We pay our respect to them and their cultures and to the elders past and present.