Portal de Periódicos da CAPES

Earth‐current observations at Chesterfield, Canada

1935; Volume: 40; Issue: 3 Linguagem: Inglês

10.1029/te040i003p00317

2379-5697

B. W. Currie,

Scientific Research and Discoveries

This is a summary of the report on the earth‐current observations made near Chesterfield Inlet (63° 20′ north, 90° 42′ west) during the International Polar Year to be published shortly by the Meteorological Service of Canada. The value of the earth‐current data in relation to the magnetic and auroral observations at Chesterfield is indicated. Earth‐current observations had not been made in any part of northern Canada prior to 1932–33, and information was lacking concerning the nature and the magnitude of the earth‐current that might be expected inside the zone of maximum auroral frequency and close to the magnetic pole. The Department of Terrestrial Magnetism of the Carnegie Institution of Washington, had designed a recording circuit for use at the International Polar‐Year Station at College‐Fairbanks, Alaska, which provided a large range of sensitivities. That Department kindly loaned an earth‐current outfit embodying this circuit to the Meteorological Service of Canada for use at Chesterfield. A description of this circuit and a statement of its advantages can be found elsewhere 1,2 .