Bathymetry of Approaches to Davis Station
All the soundings from three RAN fair Sheets were digitised as points using Microstation. The fair sheets used were Approaches to Davis - Sheets HI 171 V5/519-6877/9Scale 1:5 000 HI 120 V5/463-6877/1Scale 1:10 000 HI 120 SUP 1 V5/480-6877/7 Scale 1:10 000 Centre of gravity of the text was regarded a...
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Australian Ocean Data Network
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Online Access: | https://researchdata.ands.org.au/bathymetry-approaches-davis-station/687328 https://data.aad.gov.au/metadata/records/davisbathy_gis http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=566 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=davisbathy_gis |
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ftands:oai:ands.org.au::687328 2023-05-15T13:46:56+02:00 Bathymetry of Approaches to Davis Station AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) Spatial: northlimit=-69.0; southlimit=-69.0; westlimit=78.0; eastLimit=78.0 Temporal: From 1989-02-06 to 1992-02-12 https://researchdata.ands.org.au/bathymetry-approaches-davis-station/687328 https://data.aad.gov.au/metadata/records/davisbathy_gis http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=566 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=davisbathy_gis unknown Australian Ocean Data Network https://researchdata.ands.org.au/bathymetry-approaches-davis-station/687328 6ddf52cc-439d-45d7-9679-cb4800760399 https://data.aad.gov.au/metadata/records/davisbathy_gis http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=566 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=davisbathy_gis https://data.aad.gov.au elevation oceans SEAFLOOR TOPOGRAPHY EARTH SCIENCE BATHYMETRY/SEAFLOOR TOPOGRAPHY WATER DEPTH BATHYMETRY DAVIS SOUNDINGS AMD/AU CEOS AMD CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR dataset ftands 2020-01-05T21:08:27Z All the soundings from three RAN fair Sheets were digitised as points using Microstation. The fair sheets used were Approaches to Davis - Sheets HI 171 V5/519-6877/9Scale 1:5 000 HI 120 V5/463-6877/1Scale 1:10 000 HI 120 SUP 1 V5/480-6877/7 Scale 1:10 000 Centre of gravity of the text was regarded as point position. The points from each sheet were assigned the relevant Data Quality Indicator and merged into a single dataset. The data were then converted to ArcInfo format and merged with GEBCO 97 data and Aurora Australis data supplied by the Australian Antarctic Data Centre. DQI Regions and contours were generated from the resulting merged data set. Contouring was performed using Intergraph's Siteworks. The contour interval was 5 metres in areas of scale 1:10 000, 2 metres in areas of 1:5000 scale and 50-200 metres in areas of much smaller scale (GEBCO and Aurora Australis). Resulting contour lines were converted to ArcInfo format and checked for overlapping lines. These were fixed where they occurred. The ends of the contours were closed using connectors and the resulting data set was built for polygons. The contour height values were transferred to the polygon tables. Depressions were determined by isolating closed polygons (without connectors); if these contained contours which went below the height range of the surrounding contours then they were tagged as depressions. Feature values for polygons were also determined from their surrounding lines. The final data set was subdivided into Data Quality Indicator (DQI) regions so that the polygons and arcs could be tagged with the correct DQI value. DQI regions were assigned using the bounds of the most accurate data set first and then working out to the least accurate data set. Bathymetric Contours and height range polygons of approaches to Davis Station, derived from RAN Fair sheet, Aurora Australis and GEBCO soundings. Dataset Antarc* Antarctic Antarctica aurora australis Research Data Australia (Australian National Data Service - ANDS) Antarctic Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(78.0,78.0,-69.0,-69.0) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
elevation oceans SEAFLOOR TOPOGRAPHY EARTH SCIENCE BATHYMETRY/SEAFLOOR TOPOGRAPHY WATER DEPTH BATHYMETRY DAVIS SOUNDINGS AMD/AU CEOS AMD CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR |
spellingShingle |
elevation oceans SEAFLOOR TOPOGRAPHY EARTH SCIENCE BATHYMETRY/SEAFLOOR TOPOGRAPHY WATER DEPTH BATHYMETRY DAVIS SOUNDINGS AMD/AU CEOS AMD CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR Bathymetry of Approaches to Davis Station |
topic_facet |
elevation oceans SEAFLOOR TOPOGRAPHY EARTH SCIENCE BATHYMETRY/SEAFLOOR TOPOGRAPHY WATER DEPTH BATHYMETRY DAVIS SOUNDINGS AMD/AU CEOS AMD CONTINENT > ANTARCTICA > GEOGRAPHIC REGION > POLAR |
description |
All the soundings from three RAN fair Sheets were digitised as points using Microstation. The fair sheets used were Approaches to Davis - Sheets HI 171 V5/519-6877/9Scale 1:5 000 HI 120 V5/463-6877/1Scale 1:10 000 HI 120 SUP 1 V5/480-6877/7 Scale 1:10 000 Centre of gravity of the text was regarded as point position. The points from each sheet were assigned the relevant Data Quality Indicator and merged into a single dataset. The data were then converted to ArcInfo format and merged with GEBCO 97 data and Aurora Australis data supplied by the Australian Antarctic Data Centre. DQI Regions and contours were generated from the resulting merged data set. Contouring was performed using Intergraph's Siteworks. The contour interval was 5 metres in areas of scale 1:10 000, 2 metres in areas of 1:5000 scale and 50-200 metres in areas of much smaller scale (GEBCO and Aurora Australis). Resulting contour lines were converted to ArcInfo format and checked for overlapping lines. These were fixed where they occurred. The ends of the contours were closed using connectors and the resulting data set was built for polygons. The contour height values were transferred to the polygon tables. Depressions were determined by isolating closed polygons (without connectors); if these contained contours which went below the height range of the surrounding contours then they were tagged as depressions. Feature values for polygons were also determined from their surrounding lines. The final data set was subdivided into Data Quality Indicator (DQI) regions so that the polygons and arcs could be tagged with the correct DQI value. DQI regions were assigned using the bounds of the most accurate data set first and then working out to the least accurate data set. Bathymetric Contours and height range polygons of approaches to Davis Station, derived from RAN Fair sheet, Aurora Australis and GEBCO soundings. |
author2 |
AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) |
format |
Dataset |
title |
Bathymetry of Approaches to Davis Station |
title_short |
Bathymetry of Approaches to Davis Station |
title_full |
Bathymetry of Approaches to Davis Station |
title_fullStr |
Bathymetry of Approaches to Davis Station |
title_full_unstemmed |
Bathymetry of Approaches to Davis Station |
title_sort |
bathymetry of approaches to davis station |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.ands.org.au/bathymetry-approaches-davis-station/687328 https://data.aad.gov.au/metadata/records/davisbathy_gis http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=566 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=davisbathy_gis |
op_coverage |
Spatial: northlimit=-69.0; southlimit=-69.0; westlimit=78.0; eastLimit=78.0 Temporal: From 1989-02-06 to 1992-02-12 |
long_lat |
ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(77.968,77.968,-68.576,-68.576) ENVELOPE(78.0,78.0,-69.0,-69.0) |
geographic |
Antarctic Davis Station Davis-Station |
geographic_facet |
Antarctic Davis Station Davis-Station |
genre |
Antarc* Antarctic Antarctica aurora australis |
genre_facet |
Antarc* Antarctic Antarctica aurora australis |
op_source |
https://data.aad.gov.au |
op_relation |
https://researchdata.ands.org.au/bathymetry-approaches-davis-station/687328 6ddf52cc-439d-45d7-9679-cb4800760399 https://data.aad.gov.au/metadata/records/davisbathy_gis http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=566 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=davisbathy_gis |
_version_ |
1766245738548822016 |