ARCTIC Magnetic Observations at International Polar Year Stations in Canada'
ABSTRACT. During the First International Polar Year (1882-83) magnetic observatories were established in northern Canada at Fort Rae, Fort Con-ger, and Clearwater Fiord. Repeat magnetic observations made during the centenary of the First Polar Year enable a determination of the secular variation at...
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Format: | Text |
Language: | English |
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.544.3726 http://pubs.aina.ucalgary.ca/arctic/arctic37-3-255.pdf |
Summary: | ABSTRACT. During the First International Polar Year (1882-83) magnetic observatories were established in northern Canada at Fort Rae, Fort Con-ger, and Clearwater Fiord. Repeat magnetic observations made during the centenary of the First Polar Year enable a determination of the secular variation at each of these locations. During the last 1 0 0 years the declination has increased easterly by over 20 " at Fort Conger and at Clearwater Fiord; however, it has decreased by only 9 " at Fort Rae. The total intensity has decreased by over 1900 nT at Fort,Rae, but at Clearwater Fiord and at Fort Conger the decrease has been about 1500 nT and 1 0 0 0 nT respectively. This implies that the decrease in the nondipole field evident over most of North America in recent times has not been as great in the high Arctic. |
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