III: Advanced Modeling and Applications of Langmuir Turbulence Induced by HF Heating in the Ionosphere

III：电离层中高频加热引起的朗缪尔湍流的高级建模和应用

• 批准号: 9713563
• 负责人: Donald DuBois
• 金额: $ 10万
• 依托单位: Lodestar Research Corporation
• 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: 1997-08-15 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9713563&HistoricalAwards=false
• 关键词: III; Advanced; Modeling; Applications; Langmuir

The PI will perform theoretical investigations of HF-induced plasma turbulence in the ionosphere, dealing with: (1) improving fundamental physical descriptions included in simulation codes for treating HF induced Langmuir turbulence, and (2) applying the Langmuir turbulence theory to the prediction of hot electrons and airglow, the excitation of Langmuir turbulence by beat wave excitation, simultaneously employing two heater frequencies differing by a local ionospheric plasma frequency, the simulation of probe signatures on a wounding rocket traversing the HF induced turbulent region, analysis of the excitation of the two-plasmon decay instability and stimulated Raman scattering in the ionosphere, and mesoscale phenomena involving the self-consistent propagation of heater wave in its induced turbulence and modified density profile.

PI将对电离层中高频感应等离子体湍流进行理论研究，涉及：（1）改进用于处理HF诱导的朗缪尔湍流的模拟代码中包括的基本物理描述，以及（2）将朗缪尔湍流理论应用于热电子和气辉的预测，通过拍频波激发朗缪尔湍流的激发，同时采用由局部电离层等离子体频率不同的两个加热器频率，穿过HF诱导的湍流区域的创伤火箭上的探针签名的模拟，电离层中的两个等离子体子衰减不稳定性和受激拉曼散射的激发的分析，中尺度现象包括加热波在诱导湍流和修正密度剖面中的自洽传播。