CEDAR: Plasma Electrodynamics in the Low Latitude E Region

CEDAR：低纬度 E 区的等离子体电动力学

• 批准号: 9612821
• 负责人: Roland Tsunoda
• 金额: $ 32.97万
• 依托单位: SRI International
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 1999-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9612821&HistoricalAwards=false
• 关键词: CEDAR; Plasma; Electrodynamics; Low; Latitude

The PI will investigate the plasma electrodynamics of the low-latitude E region. He will accomplish this by making comprehensive measurements of basic plasma parameters needed to evaluate existing models of the equatorial electrojet and low-latitude ionosphere. These measurements will include incoherent scatter (IS) spectral measurements of the ionospheric region, and semi-coherent backscatter radar measurements to complement the IS measurements. The lack of plasma parameters and electric field measurements has slowed progress in understanding low-latitude E-region electrodynamics. The PI will use two radars in a series of coordinated experiments: (1) the ALTAIR, a fully steerable IS radar located in Kwajalein, to obtain the first high-resolution, IS spectral measurements of the low-latitude E region; and (2) the FAR, a portable, frequency-agile radar, to measure backscatter from type-2 irregularities in the equatorial electrojet and the 150 km echoes. In sum, this research is essential for understanding the coupling processes occurring in different geographical regions, and between plasma and neutral gas in different altitude regions.

PI将研究低纬E区的等离子体电动力学。他将通过对评估赤道电喷流和低纬电离层现有模型所需的基本等离子体参数进行全面测量来实现这一点。这些测量将包括电离层区域的非相干散射(IS)光谱测量，以及作为IS测量补充的半相干后向散射雷达测量。缺乏等离子体参数和电场测量减缓了理解低纬E区电动力学的进展。PI将在一系列协调实验中使用两个雷达：(1)位于夸贾林的完全可操纵的IS雷达Altair，以获得第一个高分辨率，是低纬E区的光谱测量；(2)FAR，一种便携式、频率捷变雷达，用于测量赤道电喷流中第二类不规则性和150公里回波的后向散射。总之，这项研究对于了解不同地理区域以及不同海拔地区等离子体和中性气体之间的耦合过程是必不可少的。