| Summary: | UAG R-212 This report presents results of scaling and analysis of telluric, magnetic and auroral data taken at Point Barrow, and on Arctic drifting stations Charlie, Arlis I and Arlis III. Scalings of hourly range in telluric current activity for Point Barrow are presented for the epoch August 1961 through December 1965. Similar scalings are presented for the 2 to 4 month data recording periods for each of the three drifting stations. Studies of the diurnal variation of telluric current activity with respect to the auroral oval show relatively good correlation. However, the differences suggest the need for more study in relating the telluric activity to the auroral activity and, perhaps, in the delineation of Akasofu’s “approximate” auroral ovals. The relative amplitude of telluric activity at College, Barrow and Charlie is in the order of 13 to 5 to 1. Normal run magnetograms are presented for about one month at each of stations Charlie and Arlis I. At Arlis I several measurements of declination were made as well as a number of measurements of total field, F. The total field measurements were made with a Rubidium vapor magnetometer. At Arlis III the Askamia variograph was equipped with a 6 in/hr chart recorder for comparison with telluric records. Simultaneous N-S, E-W, H and D traces are presented for several polar substorms. An all sky aurora camera was operated on Arlis III to provide data for the analysis of auroral arc drift and orientation with respect to the electric and magnetic disturbance vectors at the surface of the sea. Analysis of the E and H disturbance vectors generally shows the orthogonality required by the plane wave inducing field theory. However, there are marked discrepancies as predicted by Price when the scale values of the inducing field are taken into account. The telluric current in the sea is generally aligned with “systems” of auroral arcs but major differences occur. A study of the northward surge of auroral arcs in relation to the E and H vector activity was made. The E and H ...
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