Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL072911 |
On the electrophonic generation of audio frequency sound by meteors | |
Kelley, Michael C.1; Price, Colin2 | |
2017-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Israel |
英文摘要 | Recorded for centuries, people can hear and see meteors nearly concurrently. Electromagnetic energy clearly propagates at the speed of light and converts to sound (called electrophonics) when coupled to metals. An explanation for the electromagnetic energy source is suggested. Coma ions around the meteor head can easily travel across magnetic field lines up to similar to 120km. The electrons, however, are tied to magnetic field lines, since they must gyrate around the field above similar to 75km. A large ambipolar electric field must be generated to conserve charge neutrality. This localized electric field maps to the E region then drives a large Hall current that launches the electromagnetic wave. Using antenna theory and following, a power flux of over 10(-8)W/m(2) at the ground is found. Electrophonic conversion to sound efficiency then needs to be only 0.1% to explain why humans can hear and see meteors nearly concurrently. |
英文关键词 | Meteor impact Electrophonics ELF from meteor impact Leonids |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400186500003 |
WOS关键词 | LOWER IONOSPHERE ; FIREBALLS ; BURSTERS ; ECHOES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26598 |
专题 | 气候变化 |
作者单位 | 1.Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14850 USA; 2.Tel Aviv Univ, Dept Geosci, Ramat Aviv, Israel |
推荐引用方式 GB/T 7714 | Kelley, Michael C.,Price, Colin. On the electrophonic generation of audio frequency sound by meteors[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(7). |
APA | Kelley, Michael C.,&Price, Colin.(2017).On the electrophonic generation of audio frequency sound by meteors.GEOPHYSICAL RESEARCH LETTERS,44(7). |
MLA | Kelley, Michael C.,et al."On the electrophonic generation of audio frequency sound by meteors".GEOPHYSICAL RESEARCH LETTERS 44.7(2017). |
条目包含的文件 | 条目无相关文件。 |
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