Migration along orthodromic sun compass routes by arctic birds
Flight directions of birds migrating at high geographic and magnetic latitudes can be used to test bird orientation by celestial or geomagnetic compass systems under polar conditions. Migration patterns of arctic shorebirds, re-vealed by tracking radar studies during an icebreaker expedition along t...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.473.6555 2023-05-15T14:29:33+02:00 Migration along orthodromic sun compass routes by arctic birds Thomas Alerstam Gudmundur A. Gudmundsson Martin Green The Pennsylvania State University CiteSeerX Archives 2001 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.6555 en eng SCI http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.6555 Metadata may be used without restrictions as long as the oai identifier remains attached to it. text 2001 ftciteseerx 2016-01-08T07:26:42Z Flight directions of birds migrating at high geographic and magnetic latitudes can be used to test bird orientation by celestial or geomagnetic compass systems under polar conditions. Migration patterns of arctic shorebirds, re-vealed by tracking radar studies during an icebreaker expedition along the Northwest Passage in 1999, support predicted sun compass trajectories but cannot be reconciled with orientation along either geographic or magnetic loxodromes (rhumb lines). Sun compass routes are similar to orthodromes (great circle routes) at high latitudes, showing changing geographic courses as the birds traverse longitudes and their internal clock gets out of phase with local time. These routes bring the shorebirds from high arctic Canada to the east coast of North America, from which they make transoceanic ßights to South America. The observations are also consistent with a migration link between Siberia and the Beaufort Sea region by way of sun compass routes across the Arctic Ocean. How birds use different compass systems Text Arctic birds Arctic Arctic Ocean Beaufort Sea Northwest passage Siberia Unknown Arctic Arctic Ocean Canada Northwest Passage |
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ftciteseerx |
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English |
description |
Flight directions of birds migrating at high geographic and magnetic latitudes can be used to test bird orientation by celestial or geomagnetic compass systems under polar conditions. Migration patterns of arctic shorebirds, re-vealed by tracking radar studies during an icebreaker expedition along the Northwest Passage in 1999, support predicted sun compass trajectories but cannot be reconciled with orientation along either geographic or magnetic loxodromes (rhumb lines). Sun compass routes are similar to orthodromes (great circle routes) at high latitudes, showing changing geographic courses as the birds traverse longitudes and their internal clock gets out of phase with local time. These routes bring the shorebirds from high arctic Canada to the east coast of North America, from which they make transoceanic ßights to South America. The observations are also consistent with a migration link between Siberia and the Beaufort Sea region by way of sun compass routes across the Arctic Ocean. How birds use different compass systems |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Thomas Alerstam Gudmundur A. Gudmundsson Martin Green |
spellingShingle |
Thomas Alerstam Gudmundur A. Gudmundsson Martin Green Migration along orthodromic sun compass routes by arctic birds |
author_facet |
Thomas Alerstam Gudmundur A. Gudmundsson Martin Green |
author_sort |
Thomas Alerstam |
title |
Migration along orthodromic sun compass routes by arctic birds |
title_short |
Migration along orthodromic sun compass routes by arctic birds |
title_full |
Migration along orthodromic sun compass routes by arctic birds |
title_fullStr |
Migration along orthodromic sun compass routes by arctic birds |
title_full_unstemmed |
Migration along orthodromic sun compass routes by arctic birds |
title_sort |
migration along orthodromic sun compass routes by arctic birds |
publisher |
SCI |
publishDate |
2001 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.6555 |
geographic |
Arctic Arctic Ocean Canada Northwest Passage |
geographic_facet |
Arctic Arctic Ocean Canada Northwest Passage |
genre |
Arctic birds Arctic Arctic Ocean Beaufort Sea Northwest passage Siberia |
genre_facet |
Arctic birds Arctic Arctic Ocean Beaufort Sea Northwest passage Siberia |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.473.6555 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766303526075498496 |