Data

Nelly Island Adelie Penguin Colonies, Vector GIS Layer

Australian Antarctic Division
Woehler, E. and Bricher, P.K. ; WOEHLER, ERIC ; BRICHER, PHILLIPPA KATE
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://data.aad.gov.au/metadata/ASAC_1219_AAT_NI_ADPE_Colonies&rft.title=Nelly Island Adelie Penguin Colonies, Vector GIS Layer&rft.identifier=http://data.aad.gov.au/metadata/ASAC_1219_AAT_NI_ADPE_Colonies&rft.publisher=Australian Antarctic Data Centre&rft.description=An ArcGIS shapefile layer showing the extent of all extant Adelie penguin (Pygoscelis adeliae) colonies at Nelly Island, Windmill Islands, December, 1990. The colony boundaries were digitised from Linhof aerial photographs (ANTC1219, run 53, frames 5-7) that were georeferenced to the Windmill Islands Topopoly GIS dataset.Data quality cannot be accurately assessed. Errors in the georeferencing process could not be quantified, and there are positional discrepancies between overlapping aerial photographs are up to 2.4 m. Thus, absolute errors in the position of the colonies cannot be quantified, but the colony boundaries should be within ~0.5m of their location within the photographs.The shapefile and the georeferenced aerial photographs are available for download from a Related URL.This work was completed as part of ASAC project 1219 (ASAC_1219).Progress Code: completedStatement: The positional accuracy of this dataset cannot be fully assessed. It was created by georeferencing aerial photographs to the Windmill Islands Topopoly Dataset and then digitising the colonies in those photographs. The metadata for the Windmill Islands Topopoly Dataset states: 'Owing to surface conditions at the time of the photography some small features may not be present or may be incorrectly shaped. These data are based on 1:30,000, 1:15,000 and 1:5000 scale aerial photography (film ANTC1000 - 1004) using a Zeiss UMK camera. The data was checked for correct topology and to ensure that the layers overlap and abut as appropriate. Where features were sourced from Antarctic Division aerial photography the horizontal and vertical accuracy of well defined features is 1 metre. The data conforms to the Australian Antarctic Spatial Data Model which includes Data Quality Indicators.' The affine transformation used to georeference the photographs resulted in discrepancies between overlapping photographs of up to 2.4m. There may be additional errors in the georeferencing that cannot be assessed due to the differences in scale between the photographs and the available coastline layer. Thus, absolute errors in the position of the colonies cannot be quantified, but the colony boundaries should be within ~0.5m of their location within the photographs.&rft.creator=Woehler, E. and Bricher, P.K. &rft.creator=WOEHLER, ERIC &rft.creator=BRICHER, PHILLIPPA KATE &rft.date=2000&rft.coverage=westlimit=110.1706; southlimit=-66.2325; eastlimit=110.1967; northlimit=-66.2283&rft.coverage=westlimit=110.1706; southlimit=-66.2325; eastlimit=110.1967; northlimit=-66.2283&rft.coverage=uplimit=40; downlimit=0&rft.coverage=uplimit=40; downlimit=0&rft_rights=These data are available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1219_AAT_NI_ADPE_Colonies when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=biota&rft_subject=EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > PENGUINS&rft_subject=Adelie Penguin&rft_subject=colonies&rft_subject=GIS&rft_subject=map&rft_subject=Pygoscelis adeliae&rft_subject=Nelly Island&rft_subject=Frazier Islands&rft_subject=Windmill Islands&rft_subject=LFC > Large Format Camera&rft_subject=AERIAL PHOTOGRAPHS&rft_subject=AMD/AU&rft_subject=CEOS&rft_subject=AMD&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data
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CC-BY

Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are available for download from the provided URL.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1219_AAT_NI_ADPE_Colonies when using these data.

This metadata record is publicly available.

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Full description

An ArcGIS shapefile layer showing the extent of all extant Adelie penguin (Pygoscelis adeliae) colonies at Nelly Island, Windmill Islands, December, 1990.

The colony boundaries were digitised from Linhof aerial photographs (ANTC1219, run 53, frames 5-7) that were georeferenced to the Windmill Islands Topopoly GIS dataset.

Data quality cannot be accurately assessed. Errors in the georeferencing process could not be quantified, and there are positional discrepancies between overlapping aerial photographs are up to 2.4 m. Thus, absolute errors in the position of the colonies cannot be quantified, but the colony boundaries should be within ~0.5m of their location within the photographs.

The shapefile and the georeferenced aerial photographs are available for download from a Related URL.

This work was completed as part of ASAC project 1219 (ASAC_1219).

Lineage

Progress Code: completed
Statement: The positional accuracy of this dataset cannot be fully assessed. It was created by georeferencing aerial photographs to the Windmill Islands Topopoly Dataset and then digitising the colonies in those photographs. The metadata for the Windmill Islands Topopoly Dataset states: 'Owing to surface conditions at the time of the photography some small features may not be present or may be incorrectly shaped. These data are based on 1:30,000, 1:15,000 and 1:5000 scale aerial photography (film ANTC1000 - 1004) using a Zeiss UMK camera. The data was checked for correct topology and to ensure that the layers overlap and abut as appropriate. Where features were sourced from Antarctic Division aerial photography the horizontal and vertical accuracy of well defined features is 1 metre. The data conforms to the Australian Antarctic Spatial Data Model which includes Data Quality Indicators.' The affine transformation used to georeference the photographs resulted in discrepancies between overlapping photographs of up to 2.4m. There may be additional errors in the georeferencing that cannot be assessed due to the differences in scale between the photographs and the available coastline layer. Thus, absolute errors in the position of the colonies cannot be quantified, but the colony boundaries should be within ~0.5m of their location within the photographs.

Data time period: 1990-12-17 to 1990-12-17

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110.1967,-66.2283 110.1967,-66.2325 110.1706,-66.2325 110.1706,-66.2283 110.1967,-66.2283

110.18365,-66.2304

text: westlimit=110.1706; southlimit=-66.2325; eastlimit=110.1967; northlimit=-66.2283

text: uplimit=40; downlimit=0

Subjects
AERIAL PHOTOGRAPHS | AMD | AMD/AU | Adelie Penguin | CEOS | CONTINENT > ANTARCTICA | EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > PENGUINS | Frazier Islands | GEOGRAPHIC REGION > POLAR | GIS | LFC > Large Format Camera | Nelly Island | Pygoscelis adeliae | Windmill Islands | biota | colonies | map |

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Other Information
Download Point for the data (GET DATA)

uri : https://data.aad.gov.au/eds/3575/download

Public information for ASAC project 1219 (PROJECT HOME PAGE)

uri : https://projects.aad.gov.au/search_projects_results.cfm?project_no=1219

Citation reference for this metadata record and dataset (VIEW RELATED INFORMATION)

uri : http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1219_AAT_NI_ADPE_Colonies

Identifiers
  • global : ASAC_1219_AAT_NI_ADPE_Colonies