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Sprites - Electrodynamic coupling between the atmosphere and the ionosphere

Sprites - 大气和电离层之间的电动耦合

基本信息

批准号：
PP/E001483/1
负责人：
Martin Fullekrug
金额：
$ 45.88万
依托单位：
University of Bath
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2007
资助国家：
英国
起止时间：
2007 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=PP%2FE001483%2F1
关键词：
Sprites Electrodynamic coupling between atmosphere

项目摘要

Lightning to heaven: Sprites Did you ever watch lightning in thunderstorms ? Spectacular and scary at the same time, right ? Now, why don't you watch above thunderstorms at night ? You'll be surprised what you get to see: With a little bit of luck, you will be able to see lightning which goes from the top of the thundercloud up to 100 km height in the Earth's atmosphere. But these lightning flashes, denoted sprites, are rather red and bluish, because they are happening in a different part of the atmosphere. How often do sprites happen on this planet ? Where do sprites occur ? How strong are sprites ? To answer these simple questions, we can catch sprites with their radio signals. Yes, sprites are similar to radio broadcasting and TV stations, which transmit invisible waves to our homes. With very sensitive radio antennas, we can detect sprites over very long distances. Putting a number of radio antennas in some foreign countries, it is possible to detect sprites all around the world. Once we know the global sprite population, it will be possible to look in great detail at the very unusual properties of sprites. For example, sprites may be able to produce X-rays. Yes, the same X-rays which are used in medicine to look through your body. But nobody ever detected X-rays from sprites yet. The sun heats the atmosphere at 100 km height, where sprites do end. Can it be that the ever changing sun affects the global sprite population ? Or are sprites an indicator of global climate change ? If you want to search for sprites yourself, no problem: just ask a physics teacher. Many people around the planet are now starting to mount video cameras on the roofs to watch out for sprites during the night. They run computer software across the video images to detect sprites automatically and report to researchers, which is really a cool thing to do.

闪电到天堂：精灵你有没有看过雷暴中的闪电？既壮观又吓人，对吧？你为什么不在晚上看雷雨呢？你会对你所看到的感到惊讶：如果运气好的话，你将能够看到闪电，它从地球大气层的雷暴云顶部上升到100公里的高度。但是这些闪电，被称为精灵，是相当红和蓝的，因为它们发生在大气的不同部分。精灵在这个星球上多久出现一次？精灵在哪里出现？精灵有多强大？为了回答这些简单的问题，我们可以用它们的无线电信号捕捉精灵。是的，精灵类似于无线电广播和电视台，它们向我们的家中传输无形的电波。通过非常灵敏的无线电天线，我们可以在很长的距离上探测到精灵。在一些外国放置一些无线电天线，就有可能探测到世界各地的精灵。一旦我们知道了全球精灵的数量，就有可能详细地了解精灵非常不寻常的特性。例如，精灵可以产生X射线。是的，就是医学上用来透视你身体的X光。但是还没有人检测到精灵的X射线。太阳在100公里的高度加热大气层，精灵在那里结束。会不会是不断变化的太阳影响了全球精灵的数量？或者精灵是全球气候变化的一个指标？如果你想自己搜索精灵，没问题：只要问物理老师。地球上的许多人现在开始在屋顶上安装摄像机，以便在夜间监视精灵。他们在视频图像中运行计算机软件，自动检测精灵并向研究人员报告，这真的是一件很酷的事情。