Power Fluctuations in Meteor Head Echoes Observed with the EISCAT VHF Radar

Details Power Fluctuations in Meteor Head Echoes Observed with the EISCAT VHF Radar Power Fluctuations in Meteor Head Echoes Observed with the EISCAT VHF Radar

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004em%26p...95..633k&link_type=abstract

Earth, Moon, and Planets, Volume 95, Issue 1-4, pp. 633-638

Physics

3

Hpla Radar, Meteor Head Echo, Meteoroid Rotation, Plasma Effects

Scientific paper

We present observations and preliminary results from a meteor experiment carried out with the 224 MHz EISCAT VHF radar in Tromsø, Norway, which was run for 6 h on November 26, 2003. The data set contains echoes with peculiar pulsations in received power in the frequency range 20-200 Hz, limited by instrumental parameters. The process causing the echo power pulsations has not yet been identified. Plasma effects are the most likely cause, a possible mechanism is for instance asymmetrical dust grains in rotation causing a modulation of the ionization rate.

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