Other
Scientific paper
Apr 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976p%26ss...24..375s&link_type=abstract
Planetary and Space Science, vol. 24, Apr. 1976, p. 375-379.
Other
Auroras, Geomagnetism, Hiss, Polar Substorms, Ionospheric Propagation, Signal Reception, Statistical Correlation, Very Low Frequencies
Scientific paper
Observations and analyses of hiss events recorded at College, Alaska, (dp. lat. 64.62 deg N) and Bar 1 station, Yukon Terr., (dp. lat. 70.20 deg N) during periods of varying auroral and geomagnetic activity reveal three different types of events. These are: (1) auroral substorm events with associated hiss bursts during a disturbed period, (2) quiet-time hiss events accompanying stationary quiet auroral arcs, and (3) hissless events at times of auroral and magnetic activity. Quiet-time observations seem to suggest that the substorm activity is not a necessary requirement for generating wideband hiss. On the other hand, examples of auroral and magnetic activity with complete absence of VLF hiss indicate that the ground reception of VLF/ELF natural emissions is largely controlled by propagation conditions in the ionosphere. There is either little or no correlation found between hiss observations at the two stations separated by about 600 km.
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