Other
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.4427c&link_type=abstract
Journal of Geophysical Research, vol. 87, June 1, 1982, p. 4427-4434.
Other
57
Data Correlation, Electron Precipitation, Radio Transmission, Signal Distortion, Very Low Frequencies, Whistlers, Antarctic Regions, Earth Magnetosphere, Ionospheric Disturbances, Radio Direction Finders, Scintillation, Signal Analysis, Signal Fading
Scientific paper
VLF broadband, analog chart, and DF data from Palmer Station, Antarctica, recorded in 1978 and 1979 are used in investigating additional features of the Trimpi process. Emphasis is placed on perturbations of the signals NSS (21.4 kHz) and NLK (18.6 kHz) having arrival bearings at Palmer of 352 deg and 318 deg, respectively. Case studies are performed on five days of high activity. In essence, all of the 93 events involved are found to exhibit a close time correlation between amplitude perturbation and received whistler. In some cases, only a fraction of the observed whistlers appear to correlate with fixed-frequency signal changes. In one such case, correlated whistlers are found through DF analysis and frequency time pattern comparisons to contain a component not present in most other whistlers. Above a field strength of 13 microvolts/m, the amplitude of this component is found to be linearly related to NSS perturbation amplitude, whereas for cases of less than 13 microvolts m, no NSS change is detected.
Carpenter Donald L.
Labelle James W.
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