Radar and optical leonids

N. Brosch (1) , D. Polishook (1) , R. Helled (1) , S. Schijvarg (1) , M. Rosenkrantz (2)

1 TAU - Raymond and Beverly Sackler Faculty of Exact Sciences [Tel Aviv]
2 Radar Division

We present joint optical-radar observations of meteors collected near the peak of the leonid activity in 2002. We show four examples of joint detections with a large, phased array L-band radar and with intensified video cameras. The general characteristic of the radar-detected optical meteors is that they show the radar detection below the termination of the optical meteor. Therefore, at least some radar events associated with meteor activity are neither head echoes nor trail echoes, but probably indicate the formation of "charged clouds" after the visual meteor is extinguished.

Domaines: Océan, Atmosphère

N. Brosch, D. Polishook, R. Helled, S. Schijvarg, M. Rosenkrantz. Radar and optical leonids. Atmospheric Chemistry and Physics Discussions, 2004, 4 (2), pp.1425-1447. ⟨hal-00301146⟩