Spectral Reflectance of Polar Bear and Other Large Arctic Mammal Pelts; Potential Applications to Remote Sensing Surveys
Spectral reflectance within the 350–2500 nm range was measured for 17 pelts of arctic mammals (polar bear, caribou, muskox, and ringed, harp and bearded seals) in relation to snow. Reflectance of all pelts was very low at the ultraviolet (UV) end of the spectrum (<10%), increased through the visu...
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ftmdpi:oai:mdpi.com:/2072-4292/8/4/273/ 2023-08-20T04:04:20+02:00 Spectral Reflectance of Polar Bear and Other Large Arctic Mammal Pelts; Potential Applications to Remote Sensing Surveys George Leblanc Charles Francis Raymond Soffer Margaret Kalacska Julie De Gea 2016-03-25 application/pdf https://doi.org/10.3390/rs8040273 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/rs8040273 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 8; Issue 4; Pages: 273 polar bear seal spectral signature muskox caribou hyperspectral Text 2016 ftmdpi https://doi.org/10.3390/rs8040273 2023-07-31T20:51:35Z Spectral reflectance within the 350–2500 nm range was measured for 17 pelts of arctic mammals (polar bear, caribou, muskox, and ringed, harp and bearded seals) in relation to snow. Reflectance of all pelts was very low at the ultraviolet (UV) end of the spectrum (<10%), increased through the visual and near infrared, peaking at 40%–60% between 1100 and 1400 nm and then gradually dropped, though remaining above 20% until at least 1800 nm. In contrast, reflectance of snow was very high in the UV range (>90%), gradually dropped to near zero at 1500 nm, and then fluctuated between zero and 20% up to 2500 nm. All pelts could be distinguished from clean snow at many wavelengths. The polar bear pelts had higher and more uniform averaged reflectance from about 600–1100 nm than most other pelts, but discrimination was challenging due to variation in pelt color and intensity among individuals within each species. Results suggest promising approaches for using remote sensing tools with a broad spectral range to discriminate polar bears and other mammals from clean snow. Further data from live animals in their natural environment are needed to develop functions to discriminate among species of mammals and to determine whether other environmental elements may have similar reflectance. Text Arctic muskox polar bear MDPI Open Access Publishing Arctic Remote Sensing 8 4 273 |
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MDPI Open Access Publishing |
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language |
English |
topic |
polar bear seal spectral signature muskox caribou hyperspectral |
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polar bear seal spectral signature muskox caribou hyperspectral George Leblanc Charles Francis Raymond Soffer Margaret Kalacska Julie De Gea Spectral Reflectance of Polar Bear and Other Large Arctic Mammal Pelts; Potential Applications to Remote Sensing Surveys |
topic_facet |
polar bear seal spectral signature muskox caribou hyperspectral |
description |
Spectral reflectance within the 350–2500 nm range was measured for 17 pelts of arctic mammals (polar bear, caribou, muskox, and ringed, harp and bearded seals) in relation to snow. Reflectance of all pelts was very low at the ultraviolet (UV) end of the spectrum (<10%), increased through the visual and near infrared, peaking at 40%–60% between 1100 and 1400 nm and then gradually dropped, though remaining above 20% until at least 1800 nm. In contrast, reflectance of snow was very high in the UV range (>90%), gradually dropped to near zero at 1500 nm, and then fluctuated between zero and 20% up to 2500 nm. All pelts could be distinguished from clean snow at many wavelengths. The polar bear pelts had higher and more uniform averaged reflectance from about 600–1100 nm than most other pelts, but discrimination was challenging due to variation in pelt color and intensity among individuals within each species. Results suggest promising approaches for using remote sensing tools with a broad spectral range to discriminate polar bears and other mammals from clean snow. Further data from live animals in their natural environment are needed to develop functions to discriminate among species of mammals and to determine whether other environmental elements may have similar reflectance. |
format |
Text |
author |
George Leblanc Charles Francis Raymond Soffer Margaret Kalacska Julie De Gea |
author_facet |
George Leblanc Charles Francis Raymond Soffer Margaret Kalacska Julie De Gea |
author_sort |
George Leblanc |
title |
Spectral Reflectance of Polar Bear and Other Large Arctic Mammal Pelts; Potential Applications to Remote Sensing Surveys |
title_short |
Spectral Reflectance of Polar Bear and Other Large Arctic Mammal Pelts; Potential Applications to Remote Sensing Surveys |
title_full |
Spectral Reflectance of Polar Bear and Other Large Arctic Mammal Pelts; Potential Applications to Remote Sensing Surveys |
title_fullStr |
Spectral Reflectance of Polar Bear and Other Large Arctic Mammal Pelts; Potential Applications to Remote Sensing Surveys |
title_full_unstemmed |
Spectral Reflectance of Polar Bear and Other Large Arctic Mammal Pelts; Potential Applications to Remote Sensing Surveys |
title_sort |
spectral reflectance of polar bear and other large arctic mammal pelts; potential applications to remote sensing surveys |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2016 |
url |
https://doi.org/10.3390/rs8040273 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic muskox polar bear |
genre_facet |
Arctic muskox polar bear |
op_source |
Remote Sensing; Volume 8; Issue 4; Pages: 273 |
op_relation |
https://dx.doi.org/10.3390/rs8040273 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs8040273 |
container_title |
Remote Sensing |
container_volume |
8 |
container_issue |
4 |
container_start_page |
273 |
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1774714729564995584 |