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INFRARED SENSING OF THE UNDER‐SNOW LAIRS OF THE RINGED SEAL
Author(s) -
Kingsley Michael C. S.,
Hammill Michael O.,
Kelly Brendan P.
Publication year - 1990
Publication title -
marine mammal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.723
H-Index - 78
eISSN - 1748-7692
pISSN - 0824-0469
DOI - 10.1111/j.1748-7692.1990.tb00363.x
Subject(s) - phoca , snow , snow cover , environmental science , sunrise , infrared , cloud cover , atmospheric sciences , remote sensing , meteorology , geology , ecology , geography , biology , physics , optics , computer science , operating system , cloud computing
A bstract Airborne sensing of emitted infrared (IR) was tested as a means of detecting under‐snow lairs of the ringed seal ( Phoca hispida ) in study areas in Resolute Passage, N.W.T. Lairs and regularly used large breathing holes could in some cases be detected by emitted IR from altitudes of up to 180 m. Lairs were more easily detected if they had thin roofs, and detectability was higher before sunrise, and under conditions of low wind, low ambient temperature and high cloud cover.