Cluster listens to the dawn chorus
Date: 26 November 2000
Satellite: Cluster
Copyright: ESA
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Data from two of the Cluster spacecraft. The vertical axis shows frequency and the horizontal axis shows time. The colour indicates the relative intensity of waves. The chorus emissions occur between 7.5 and 9.5 kHz as indicated. Very similar patterns are seen at both spacecraft.
A .wav file with the sound of the chorus as depicted in this image, can be downloaded by following the related link to "Sound of plasma waves" on the right-hand side.
Last Update: 1 September 2019