To continue a Search for the Sources of F-Region TID's and Their Causative Gravity Waves

继续寻找 F 区 TID 的来源及其引起的重力波

• 批准号: 8711628
• 负责人: Millett Morgan
• 金额: $ 23万
• 依托单位: Dartmouth College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-15 至 1990-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8711628&HistoricalAwards=false
• 关键词: continue; Search; Sources; Region; TID

When the Atmosphere of the earth is disturbed and heated by energetic particle impact it responds much like a pond when a stone is dropped in it. Waves propagate from the source of the disturbance. These waves, identified as gravity waves, have the potential to impart energy and momentum to the atmosphere depending upon how they propagate. Currently, there are two ideas on how these waves propagate: the first is that the spectrum of waves are breaking and causing turbulence: the second is that the waves are confined to a guide of sorts (ducted) and travel undisturbed. The resolution of this issue is of current concern in atmospheric sciences. The research program here has as the objective the identification of the source regions and propagation direction of the waves that travel through the ionosphere (Traveling Ionospheric Disturbances). The tool that is used is an array of ionosondes arranged along a line stretching 23 degrees from the auroral zone and including two sets of closely spaced ionosondes used for triangulation. Progress to date indicates support for the ducted mechanism. The PI is a highly regarded scientist who has made innovative contributions in the use of ionosondes as a research tool. His past record qualifies him to continue this project.

当地球的大气层被扰动和加热时， 高能粒子撞击它的反应很像一个池塘， 石头被扔进去。波从源头传播， 扰动 这些波被称为重力波， 向大气层提供能量和动量的潜力 这取决于它们如何传播。 目前有两 关于这些波如何传播的想法：首先是， 波浪的频谱正在破碎并引起湍流： 第二个是波被限制在某种引导物中 （管道）和旅行不受干扰。 这个问题的解决是 目前在大气科学中备受关注。 这里的研究项目的目标是 识别的源区和传播方向 通过电离层传播的波（传播 电离层扰动）。 使用的工具是一个数组， 电离层探测器沿沿着排列， 极光带，包括两套相距很近的电离层探测仪 用于三角测量。 迄今取得的进展表明， 管道机制。 PI是一位备受尊敬的科学家，他做出了 在利用电离层探测仪作为研究手段方面的创新贡献 工具. 他过去的记录使他有资格继续这个项目。