Relationship between auroral substorms and the occurrence of terrestrial kilometric radiation

Details Relationship between auroral substorms and the occurrence of terrestrial kilometric radiation Relationship between auroral substorms and the occurrence of terrestrial kilometric radiation

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.5283k&link_type=abstract

Journal of Geophysical Research, vol. 82, Nov. 1, 1977, p. 5283-5286.

Astronomy and Astrophysics

Astronomy

17

Auroral Zones, Earth Magnetosphere, Polar Substorms, Radio Waves, Satellite Observation, Terrestrial Radiation, Correlation Coefficients, Explorer 43 Satellite, Magnetic Storms, Radio Astronomy, Radio Spectra

Scientific paper

The paper examines the correlation between magnetospheric substorms as inferred from the AE(11) index and the occurrence of terrestrial kilometric radiation (TKR) as observed by the Goddard radio astronomy experiment on board the Imp 6 spacecraft. It is suggested that many TKR events begin at low altitudes and high frequencies (approximately 400 - 500 kHz) and spread to higher altitudes and lower frequencies as the substorm expands. AE and TKR are well correlated for observations in the 1500-300 MLT zone and poorly correlated for the complementary zone. High-resolution dynamic spectra obtained during periods of isolated substorms are described; the substorm expansion phase corresponds to a rapid intensification and bandwidth increase of TKR.

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