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 additio...
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ftdatacite:10.4225/25/5b289b3bc07af 2023-05-15T14:02:10+02:00 Geomorphic features of the Antarctic margin and Southern Ocean 2012 Post, A.L. 2016 https://dx.doi.org/10.4225/25/5b289b3bc07af http://pid.geoscience.gov.au/dataset/ga/102441 en eng Commonwealth of Australia (Geoscience Australia) http://pid.geoscience.gov.au/dataset/102441 geomorphology seafloor habitat mapping dataset Dataset 2016 ftdatacite https://doi.org/10.4225/25/5b289b3bc07af 2021-11-05T12:55:41Z 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. Dataset Antarc* Antarctic Antarctica East Antarctica Scientific Committee on Antarctic Research Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic East Antarctica Southern Ocean The Antarctic |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
geomorphology seafloor habitat mapping |
spellingShingle |
geomorphology seafloor habitat mapping Post, A.L. Geomorphic features of the Antarctic margin and Southern Ocean 2012 |
topic_facet |
geomorphology seafloor habitat mapping |
description |
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. |
format |
Dataset |
author |
Post, A.L. |
author_facet |
Post, A.L. |
author_sort |
Post, A.L. |
title |
Geomorphic features of the Antarctic margin and Southern Ocean 2012 |
title_short |
Geomorphic features of the Antarctic margin and Southern Ocean 2012 |
title_full |
Geomorphic features of the Antarctic margin and Southern Ocean 2012 |
title_fullStr |
Geomorphic features of the Antarctic margin and Southern Ocean 2012 |
title_full_unstemmed |
Geomorphic features of the Antarctic margin and Southern Ocean 2012 |
title_sort |
geomorphic features of the antarctic margin and southern ocean 2012 |
publisher |
Commonwealth of Australia (Geoscience Australia) |
publishDate |
2016 |
url |
https://dx.doi.org/10.4225/25/5b289b3bc07af http://pid.geoscience.gov.au/dataset/ga/102441 |
geographic |
Antarctic East Antarctica Southern Ocean The Antarctic |
geographic_facet |
Antarctic East Antarctica Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Scientific Committee on Antarctic Research Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Scientific Committee on Antarctic Research Southern Ocean |
op_relation |
http://pid.geoscience.gov.au/dataset/102441 |
op_doi |
https://doi.org/10.4225/25/5b289b3bc07af |
_version_ |
1766272273359044608 |