Measurement of declination at South Georgia 1700–1984
Declination, or the difference between true and magnetic north, is one of the earliest parameters to have been measured systematically over the earth's surface. Values are available for South Georgia and the surrounding area from 1700 to the present. Observations were made from ship by Edmond H...
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Cambridge University Press
1987
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Online Access: | http://nora.nerc.ac.uk/id/eprint/522973/ https://doi.org/10.1017/S0032247400007531 |
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ftnerc:oai:nora.nerc.ac.uk:522973 2023-05-15T13:41:43+02:00 Measurement of declination at South Georgia 1700–1984 Simmons, D.A. 1987-01 http://nora.nerc.ac.uk/id/eprint/522973/ https://doi.org/10.1017/S0032247400007531 unknown Cambridge University Press Simmons, D.A. 1987 Measurement of declination at South Georgia 1700–1984. Polar Record, 23 (145). 419-426. https://doi.org/10.1017/S0032247400007531 <https://doi.org/10.1017/S0032247400007531> Publication - Article PeerReviewed 1987 ftnerc https://doi.org/10.1017/S0032247400007531 2023-02-04T19:48:08Z Declination, or the difference between true and magnetic north, is one of the earliest parameters to have been measured systematically over the earth's surface. Values are available for South Georgia and the surrounding area from 1700 to the present. Observations were made from ship by Edmond Halley in 1700, by James Cook in 1775 and thereafter more frequently. Land-based observations were made during the First Polar Year in 1882–3, more recently by the British Antarctic Survey 1975–82. Declination has diminished from 23°E in 1700 to about 9°W in 1980, approximately 0.1° per annum. The modern observations suggest that the rate of change has slowed in recent years. Article in Journal/Newspaper Antarc* Antarctic British Antarctic Survey Polar Record Natural Environment Research Council: NERC Open Research Archive Antarctic Polar Record 23 145 419 426 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
Declination, or the difference between true and magnetic north, is one of the earliest parameters to have been measured systematically over the earth's surface. Values are available for South Georgia and the surrounding area from 1700 to the present. Observations were made from ship by Edmond Halley in 1700, by James Cook in 1775 and thereafter more frequently. Land-based observations were made during the First Polar Year in 1882–3, more recently by the British Antarctic Survey 1975–82. Declination has diminished from 23°E in 1700 to about 9°W in 1980, approximately 0.1° per annum. The modern observations suggest that the rate of change has slowed in recent years. |
format |
Article in Journal/Newspaper |
author |
Simmons, D.A. |
spellingShingle |
Simmons, D.A. Measurement of declination at South Georgia 1700–1984 |
author_facet |
Simmons, D.A. |
author_sort |
Simmons, D.A. |
title |
Measurement of declination at South Georgia 1700–1984 |
title_short |
Measurement of declination at South Georgia 1700–1984 |
title_full |
Measurement of declination at South Georgia 1700–1984 |
title_fullStr |
Measurement of declination at South Georgia 1700–1984 |
title_full_unstemmed |
Measurement of declination at South Georgia 1700–1984 |
title_sort |
measurement of declination at south georgia 1700–1984 |
publisher |
Cambridge University Press |
publishDate |
1987 |
url |
http://nora.nerc.ac.uk/id/eprint/522973/ https://doi.org/10.1017/S0032247400007531 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic British Antarctic Survey Polar Record |
genre_facet |
Antarc* Antarctic British Antarctic Survey Polar Record |
op_relation |
Simmons, D.A. 1987 Measurement of declination at South Georgia 1700–1984. Polar Record, 23 (145). 419-426. https://doi.org/10.1017/S0032247400007531 <https://doi.org/10.1017/S0032247400007531> |
op_doi |
https://doi.org/10.1017/S0032247400007531 |
container_title |
Polar Record |
container_volume |
23 |
container_issue |
145 |
container_start_page |
419 |
op_container_end_page |
426 |
_version_ |
1766154597561270272 |