Various Properties of Natural and Triggered Lightning Discharges

自然和触发闪电放电的各种特性

• 批准号: 9415507
• 负责人: Vladimir Rakov
• 金额: $ 50.67万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-02-15 至 1998-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9415507&HistoricalAwards=false
• 关键词: Various; Properties; Natural; Triggered; Lightning

9415507 Uman The objective of the proposed research is an improvement in the presently existing knowledge of the physical processes comprising the lightning discharge with emphasis on the least well understood processes of lightning initiation in the cloud and lightning attachment to ground. The project includes both experimental and theoretical studies of natural and artificially initiated (rocket- triggered) lightning flashes. The latter part of 1994 will be primarily devoted to the analysis of the presently in-hand unique triggered-lightning data (currents, multiple-station electric and magnetic fields, and optical records) acquired in 1993 in Florida and Alabama. During 1995 and 1996 the research will be primarily concentrated on building two relatively large data bases: (1) extremely close measurements of electric and magnetic fields (in conjunction with simultaneous current and optical records obtained by cooperating research groups) of the rocket-triggered lightning at Camp Blanding, Florida and Fort McClellan, Alabama and (2) electric and magnetic field records of both cloud-to-ground and in- cloud natural lightning acquired with a state-of-the-art digitizing system. The year 1997 will be devoted primarily to the analysis of the newly acquired data and associated theoretical studies concentrating on the least understood processes that occur inside the cloud and during the lightning attachment to ground. The development of a new theory of the lightning discharge to ground taking into account the lightning attachment processes a will be attempted.

小行星9415507 拟议的研究的目的是在目前现有的知识，包括闪电放电的物理过程的改进，重点是在云中的闪电启动和闪电附着到地面的过程中最不好理解。 该项目包括自然和人工引发（火箭触发）闪电的实验和理论研究。 1994年下半年将主要用于分析1993年在佛罗里达和亚拉巴马获得的现有独特的触发闪电数据（电流、多站电场和磁场以及光学记录）。 1995年和1996年期间，研究工作将主要集中于建立两个较大的数据库：（1）对电场和磁场的极近距离测量（与合作研究小组获得的同步电流和光学记录相结合）在佛罗里达的布兰丁营和麦克莱伦堡的火箭触发闪电，亚拉巴马和（2）与国家的最先进的数字化系统获得的云对地和云内自然闪电的电场和磁场记录。 1997年将主要致力于分析新获得的数据和相关的理论研究，重点关注云中和闪电附着到地面期间发生的最不为人所知的过程。 将尝试发展一种考虑雷电附着过程的雷电对地放电新理论。