ARCTIC Magnetic Observations at International Polar Year Stations in Canada'

• Main Authors: L. R. Newitt, E. Dawsonz
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Key words; Polar Year; Fort Conger; Fort Rae; Clearwater Fiord; Kingua Fiord; secular variation; magnetic field; Arctic; Canada; Rae; International Polar Year
• 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

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.