CEDAR: Probing the Upper E-region and Lower F-region Neutral Winds Using Ionospheric Heating

CEDAR：利用电离层加热探测上部 E 区和下部 F 区中性风

基本信息

批准号：
1651467
负责人：
Donald Hampton
金额：
$ 26.91万
依托单位：
University of Alaska Fairbanks Campus
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-15 至 2021-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1651467&HistoricalAwards=false
关键词：
CEDAR Probing Upper region Lower

项目摘要

The goal of this proposal is to examine the response of thermospheric neutral winds to space weather. Local winds in the 150-250 km range are very difficult to measure owing to the absence of sustained optical emissions over this altitude range. The PI therefore proposes to artificially stimulate such emissions by directly heating the ionosphere using very high-power, high-frequency radio waves. These emissions will be detected by an instrument called a Fabry-Perot interferometer (FPI), that characterizes the properties of light emitted by molecules in motion. The heating of the ionosphere will take place at the High frequency Active Auroral Radar Project (HAARP) facility in Alaska. Two FPIs will be located within 320 km from the HAARP facility, in order to resolve the horizontal wind vector. Broader impacts of this proposal include Ph.D. training at UAF, STEM outreach to local schools, and raising the profile of the HAARP heating facility following its transition from military to UAF management.The specific goals of this project are to 1. Determine winds with high vertical (10 km) and temporal (several minutes) resolution through coordinated FPI and HAARP observing activity 2. Examine altitude and temporal variations in these winds under both artificial (HAARP-induced) and auroral conditions. The intellectual merits of the proposal lie in demonstrating the new wind recovery methods, and in resolving their altitudinal and temporal variability.

该提案的目标是研究热层中性风对太空天气的响应。由于在这个高度范围内没有持续的光发射，150-250公里范围内的局地风很难测量。因此，PI 建议通过使用极高功率、高频无线电波直接加热电离层来人为地刺激此类排放。这些发射将由一种称为法布里-珀罗干涉仪 (FPI) 的仪器检测到，该仪器可表征运动中分子发射的光的特性。电离层的加热将在阿拉斯加的高频主动极光雷达项目（HAARP）设施中进行。两个 FPI 将位于距 HAARP 设施 320 公里范围内，以解析水平风矢量。该提案的更广泛影响包括博士学位。在 UAF 进行培训，向当地学校推广 STEM，并在 HAARP 供暖设施从军事管理过渡到 UAF 管理后提高其形象。该项目的具体目标是 1. 确定高垂直风（10 公里）和时间风（10 公里）几分钟）通过协调 FPI 和 HAARP 观测活动来解决 2. 在人工（HAARP 引起的）和极光条件下检查这些风的高度和时间变化。该提案的智力优点在于展示了新的风回收方法，并解决了它们的高度和时间变化。