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Physical Sciences: Effect of Sunrise on the Meteor Region

Abstract

PREVIOUS observations at Sheffield of radio echoes from Quadrantid meteors have shown a marked increase in the numbers of echoes with enhanced duration (>2 s) some tens of minutes after sunrise on the echoing layer (unpublished work of T. R. Kaiser, T. F. Nicholson and L. M. G. Poole). During the 1972 Quadrantids this increase occurred at 0830 UT, about 60 min after layer sunrise at a time when the solar zenith angle at the layer was 91°.

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References

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HUGHES, D., BAGGALEY, W. Physical Sciences: Effect of Sunrise on the Meteor Region. Nature 237, 224–226 (1972). https://doi.org/10.1038/237224a0

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