Classified Adélie penguin colonies from Landsat data ...
Breeding distribution of the Adelie penguin, Pygoscelis adeliae, was surveyed with Landsat-7 Enhanced Thematic Mapper Plus (ETM+) data along the coastline of Antarctica, an area covering approximately 330° of longitude. An algorithm was designed to minimize the radiometric contribution from exogenou...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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PANGAEA
2013
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.804588 https://doi.pangaea.de/10.1594/PANGAEA.804588 |
| Summary: | Breeding distribution of the Adelie penguin, Pygoscelis adeliae, was surveyed with Landsat-7 Enhanced Thematic Mapper Plus (ETM+) data along the coastline of Antarctica, an area covering approximately 330° of longitude. An algorithm was designed to minimize the radiometric contribution from exogenous sources and to retrieve Adelie penguin colony location and spatial extent from the ETM+ data. In all, 9143 individual pixels were classified as belonging to an Adelie penguin colony class out of the entire dataset of 195 ETM+ scenes, where the dimension of each pixel is 30 m by 30 m, and each scene is approximately 180 km by 180 km. Pixel clustering identified a total of 187 individual Adelie penguin colonies, ranging in size from a single pixel (900 m**2) to a maximum of 875 pixels (0.788 km**2). Colony retrievals have a very low error of commission, on the order of 1 percent or less, and the error of omission was estimated to be 2.9 percent by population based on comparisons with direct observations from ... : This data set lists each pixel classified as belonging to the Adélie penguin colony class, and includes the following parameters: a unique identification number for each colony cluster, the source ETM+ file for each pixel, an index of the "goodness" of the classification, the pixel row and column number of the source file, the geographic location of each classified pixel (in both polar stereographic and geographic latitude and longitude), the pixel rotation with respect to true north, and the at-instrument reflectance measured in ETM+ bands 3,4,5 and 7 for each pixel in the data set.PARAMETER DESCRIPTIONScolony_ID: Schwaller, Southwell and Emmerson describe the spatial clustering method applied to the dataset that resulted in 189 distinct Adelie penguin colonies. This field contains the ID numbers of the Adelie penguin colonies that resulted from the clustering as described in the paper.source_file: The file name of the Landsat-7 image that was the source of the classified pixel. The Landsat-7 images are ... |
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