A VLF Beacon Transmitter at South Pole

南极的 VLF 信标发射机

• 批准号: 0636928
• 负责人: John Gill
• 金额: --
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0636928&HistoricalAwards=false
• 关键词: VLF; Beacon; Transmitter; South; Pole

ANT-0636928 A VLF Beacon Transmitter at South PolePI: Umran S. Inan, Stanford UniversityThis proposal seeks funding to resume operation of the VLF Beacon Transmitter at the South Pole Station used to quantify temporal and spatial variations in the state of the lower ionosphere between the polar cap and subauroral zone, to determine the ionosphere's response to precipitation of highly energetic radiation belt electrons and solar protons, and to monitor the loss of these particles into the atmosphere. Although fluctuations in the relativistic particle population are extensively observed on satellites, little is known about the extent of associated precipitation into the ionosphere. Upon precipitation, these highly energetic particles penetrate to altitudes as low as 30-40 km, producing ionization, X-rays, and possibly affecting chemical reactions involving ozone production. It is proposed to continue recording the VLF beacon's signal at various Antarctic coastal stations (Palmer, Halley, etc). The broader impact of the proposed program includes the synergistic use of the South Pole VLF beacon with ongoing satellite-based measurements of trapped and precipitating high-energy electrons both at low and high altitudes and with other Antarctic Upper Atmospheric research efforts, such as the Automatic Geophysical Observatory programs and routine upper atmospheric observations at manned bases. The proposed project also promotes international collaboration via multi-points recording of the South Pole VLF beacon signal while providing the basis of a graduate or doctoral student thesis.

ANT-0636928 南极的 VLF 信标发射机 PI：Umran S. Inan，斯坦福大学该提案寻求资金以恢复南极站 VLF 信标发射机的运行，该发射机用于量化低电离层状态的时间和空间变化。极冠和亚极光区，确定电离层对高能辐射带电子和太阳质子降水的响应，并监测损失这些颗粒进入大气。尽管在卫星上广​​泛观察到相对论粒子群的波动，但人们对电离层相关降水的程度知之甚少。降水后，这些高能粒子会渗透到低至 30-40 公里的高度，产生电离、X 射线，并可能影响涉及臭氧生成的化学反应。建议继续在各个南极沿海站（帕尔默站、哈雷站等）记录甚低频信标信号。拟议计划的更广泛影响包括协同使用南极甚低频信标与正在进行的基于卫星的低空和高空捕获和沉淀高能电子测量以及其他南极高层大气研究工作，例如自动地球物理观测站计划和载人基地的常规高层大气观测。拟议的项目还通过南极甚低频信标信号的多点记录来促进国际合作，同时为研究生或博士生论文提供基础。