Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5487981 | Planetary and Space Science | 2017 | 6 Pages |
Abstract
Meteor ablation features in the spectral lines occurring at 394, 436, 520, and 589Â nm were observed using a four-camera spectral system between September and December 2015. In conjunction with this multi-camera system the Canadian Automated Meteor Observatory was used to observe the orbital parameters and fragmentation of these meteors. In total, 95 light curves with complete data in the 520 and 589Â nm filters were analyzed; some also had partial or complete data in the 394Â nm filter, but no usable data was collected with the 436Â nm filter. Of the 95 events, 70 exhibited some degree of differential ablation, and in all except 3 of these 70 events the 589Â nm filter started or ended sooner compared with the 520Â nm filter, indicating early ablation at the 589Â nm wavelength. In the majority of cases the meteor showed evidence of fragmentation regardless of the type of ablation (differential or uniform). A surprising result was the lack of correlation found concerning the KB parameter, linked to meteoroid strength, and differential ablation. In addition, 22 shower-associated meteors were observed; Geminids showed mainly slight differential ablation, while Taurids were more likely to ablate uniformly.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geophysics
Authors
K. Bloxam, M. Campbell-Brown,