Galligan and Baggaley's [4] wavelet enhancement technique for detecting showers in radar data has been systematically applied to the amor data set. This is the first time such a technique has been applied in the field of meteor science. It has proven to be robust, efficient and objective—further development in this field is recommended.

In the current study, apart from a few possible other showers, one of which has been discussed here, only the major well established showers have been detected over four years. Due to its sensitivity to small meteors this result is expected; the less than 1% of the shower in compact and distinct groupings leads to the particularly useful role of amor as a probe of the general meteor background structure.

The showers which have been found in the data set have had their orbital structure analysed with account taken of the daily motions in many of the parameters. The mean resultant orbits have been shown to generally agree well with other studies. Daily motion in radiant position has been measured and removed. Such motion has also been demonstrated in other orbital parameters; it is unusual in meteor observation programs that one has enough shower meteors and low enough uncertainties to make these measurements— the removal of this motion, where appropriate, undoubtedly provides a better estimate of the true means of the parameter distributions.

Was this article helpful?

0 0

Post a comment