Abstract
Acoustic aurora have been heard by long-term residents of the arctic. They have also been recorded on microbarographs. Acoustic events associated with aurora are now reported in the near infrasonic range (1–16 Hz) at Barrow, Alaska. These observations were made with the aid of a resonant detector achieving a high signal-to-noise ratio similar to that used in extending the rocket-grenade technique to 109 km. Over 100 impulsive events of a quasirepetitive nature were recorded on a patrol basis during January, 1970. Initial observations of acoustic events were correlated with disturbed magnetic conditions and optical aurora but uncorrelated with lower frequency auroral microbarograph events at College or Inuvik.
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