کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1777297 | 1523663 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Seasonal variation of meteor decay times observed at King Sejong Station (62.22°S, 58.78°W), Antarctica
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Seasonal variation of meteor decay times observed at King Sejong Station (62.22°S, 58.78°W), Antarctica Seasonal variation of meteor decay times observed at King Sejong Station (62.22°S, 58.78°W), Antarctica](/preview/png/1777297.png)
چکیده انگلیسی
We analyzed meteor decay times measured by a VHF radar at King Sejong Station by classifying strong and weak meteors according to their estimated electron line densities. The height profiles of monthly averaged decay times show a peak whose altitude varies with season at altitudes of 80â85Â km. The higher peak during summer is consistent with colder temperatures that cause faster chemical reactions of electron removal. By adopting temperature dependent empirical recombination rates from rocket experiments and meteor electron densities of 2Ã105â2Ã106Â cmâ3 in a decay time model, we are able to account for decreasing decay times below the peak for all seasons without invoking meteor electron removal by hypothetical icy particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 72, Issues 11â12, July 2010, Pages 883-889
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 72, Issues 11â12, July 2010, Pages 883-889
نویسندگان
Jeong-Han Kim, Yong Ha Kim, Chang-Sup Lee, Geonhwa Jee,