Collaborative Research: Antarctic ELF/VLF Observations of Lightning and Lightning-Induced Electron Precipitation

合作研究：南极闪电 ELF/VLF 观测和闪电诱发电子降水

• 批准号: 0944639
• 负责人: Robert Moore
• 金额: $ 23.9万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-03-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0944639&HistoricalAwards=false
• 关键词: Collaborative; Research; Antarctic; ELF; VLF

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The proposal seeks funding to investigate quantitatively the lightning-induced electron precipitation (LEP) using the ELF/VLF (~5 Hz?32 kHz) observations on the Antarctic continent. A coordinated effort will fully characterize individual lightning strokes occurring in the northern hemisphere while simultaneously observing the associated ELF/VLF waveforms in the Antarctic. In addition to advancing knowledge of the ELF/VLF wave studies in general, these observations will be used to differentiate between lightning energy that couples to the ionosphere/magnetosphere and that which couples to the Earth-ionosphere waveguide. Simultaneous observations of LEP will be conducted in the northern and southern hemispheres in order to: (1) quantitatively relate the upward-coupling lightning energy and LEP production, and (2) evaluate the conditions under which LEP occurs in both hemispheres. Rocket-triggered lightning in Florida allow for the direct measurement of lightning currents and will contribute to both the lightning- and LEP-related research efforts. The Antarctic research stations are ideally situated to perform both the long-distance ELF/VLF lightning observations and the VLF scattering observations for LEP detection in the conjugate region, necessary for the success of this program. Continued reliance on graduate and undergraduate students provides a broader impact to this proposed research and firmly grounds this effort in its educational mission.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该提案寻求资金，以定量研究闪电引起的电子沉淀（LEP）使用ELF/VLF（~5 Hz？32 kHz）在南极大陆的观测。协调一致的努力将充分描述发生在北方的单个闪电的特征，同时观测南极洲的相关极低频/甚低频波形。除了增进对极低频/甚低频波研究的一般知识外，这些观测还将用于区分耦合到电离层/磁层的闪电能量和耦合到地球-电离层波导的闪电能量。LEP的同时观测将在北方和南半球进行，以便：（1）定量地联系向上耦合的闪电能量和LEP的生产，和（2）评估LEP发生在两个半球的条件。佛罗里达的火箭触发闪电允许直接测量闪电电流，并将有助于闪电和LEP相关的研究工作。南极研究站所处的位置非常理想，既可以进行远距离ELF/VLF闪电观测，也可以进行VLF散射观测，以便在共轭区探测LEP，这是该方案成功所必需的。对研究生和本科生的持续依赖为这项拟议的研究提供了更广泛的影响，并在其教育使命中坚定地支持这项努力。