In-situ Electrodynamics over Sprite Producing Storms

精灵产生风暴的原位电动力学

• 批准号: 0091825
• 负责人: Robert Holzworth
• 金额: $ 50.89万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0091825&HistoricalAwards=false
• 关键词: situ; Electrodynamics; over; Sprite; Producing

This award supports the development and flight of four balloon payloads over mesoscale convective complexes located in the central region of South America. The purpose of these flights conducted through the support of the Brazilian balloon launch facilities is to obtain measurements pertaining to the production of Bremstralung X-rays that might be produced in the course of sprite events. Detection of these X-rays would determine the importance of runaway electrons in the development of sprite emissions, a basic assumption in current models that has not been verified through measurements. Additional balloon measurements would acquire a determination of the background distribution of vector electric and magnetic field distribution generated by the thunderstorm activity. Optical documentation of sprite events would be achieved through the application of high speed optical imaging of sprite emissions that would be flown on a Brazilian aircraft that will be located some 50 to 200 kms away from the thunderstorm activity. These results would be compared with model predictions of sprite events as revised to correspond to the electrical characteristics of the storm observed.

该奖项支持在南美洲中部地区的中尺度对流复合体上空开发和飞行四个气球有效载荷。在巴西气球发射设施的支持下进行这些飞行的目的是获得有关在精灵事件过程中可能产生的Bremstralung X射线的测量结果。对这些X射线的探测将确定逃逸电子在精灵发射发展过程中的重要性，这是目前模型中的一个基本假设，尚未通过测量得到验证。额外的气球测量将获得雷暴活动产生的矢量电场和磁场分布的背景分布的确定。对精灵事件的光学记录将通过应用对精灵排放的高速光学成像来实现，巴西飞机将在距离雷暴活动约50至200公里的地方飞行。这些结果将与精灵事件的模型预测进行比较，修正后的预测与观测到的风暴的电学特征相对应。