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Low-Latitude Ionospheric Research at Jicamarca

Low-Latitude Ionospheric Research at Jicamarca
Jicamarca 的低纬度电离层研究
批准号:
9711236
负责人:
David Hysell
金额:
$12.98万
依托单位:
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
项目状态:
已结题
起止时间:
1997-08-15 至 2001-07-31

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中文摘要
翻译
本研究涉及赤道等离子体不规则性和赤道大气学的理论和观测。PI(和一名学生)将使用Jicamara雷达进行几组短期观测,然后使用Julia进行长期观测。利用PI在Jicamara的相干散射雷达成像技术,PI将评估和评估一些赤道F区等离子体不规则性的突破性理论,例如为什么大规模等离子体损耗分叉,相干散射多普勒谱意味着什么,以及切变流动如何影响底部扩展F波的演化。PI将把这一项目的另一部分用于Julia雷达的继续运行,以进行E和F区等离子体不规则性研究。Julia资料表明:(1)电喷流中的梯度漂移波有时会被传播到低热层的潮汐调制,(2)风暴时间对赤道电动力学和不规则性产生的影响的证据,以及(3)与传统看法相反的F区不规则性频率在清晨出现。PI将开发新的分析理论来更准确地解释这些现象。最后,他将开发一种新的非相干散射测量模式,包括一种交替的相位编码脉冲,用于在顶部区域进行敏感的温度和成分实验。
英文摘要
This research pertains to theory and observation of equatorial plasma irregularities and equatorial aeronomy. The PI (and one student) will make several sets of short-term observations with the Jicamarca radar, following up with long-term observations using JULIA. Using the PI's coherent scatter radar imaging technique at Jicamarca, the PI will assess and evaluate a number of breaking theories of equatorial F-region plasma irregularities, like why large-scale plasma depletions bifurcate, what coherent scatter Doppler spectra signify, and how shear flow affects the evolution of bottomside spread F waves. The PI will devote another portion of this project to continuing operations of the JULIA radar for E and F region plasma irregularity studies. JULIA data has shown: (1) gradient drift waves in the electrojet are sometimes modulated by tides propagating into the lower thermosphere, (2) evidence of storm-time effects on equatorial electrodynamics and irregularity generation, and (3) F-region irregularities frequency emerge in the early morning, contrary to conventional wisdom. The PI will develop new analytic theories to more precisely account for these phenomena. Finally, he will develop a new mode for incoherent scatter measurements, incorporating an alternating phase-coded pulse for making for sensitive temperature and composition experiment in the topside region.
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Frontier Research at the Jicamarca Radio Observatory
  • 批准号:
    2213849
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $865.32万
  • 财政年份:
    2023
  • 负责人:
    David Hysell
  • 依托单位:
Upgrading the Jicamarca Radio Observatory
  • 批准号:
    2226078
  • 项目类别:
    Standard Grant
  • 资助金额:
    $126.53万
  • 财政年份:
    2023
  • 负责人:
    David Hysell
  • 依托单位:
Aeronomy Research Using Ionospheric Modifications
  • 批准号:
    2146187
  • 项目类别:
    Standard Grant
  • 资助金额:
    $49.06万
  • 财政年份:
    2022
  • 负责人:
    David Hysell
  • 依托单位:
Conference Support for the 60th Anniversary Workshop at the Jicamarca Radio Observatory; Lima, Peru; July 25-27, 2022
  • 批准号:
    2229584
  • 项目类别:
    Standard Grant
  • 资助金额:
    $3.48万
  • 财政年份:
    2022
  • 负责人:
    David Hysell
  • 依托单位:
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