EAGER: Multi-frequency Studies of Lightning Initiation and Propagation

EAGER:闪电发生和传播的多频率研究

基本信息

  • 批准号:
    1016004
  • 负责人:
  • 金额:
    $ 10.43万
  • 依托单位:
  • 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 2012-02-29
  • 项目状态:
    已结题

项目摘要

Lightning is one of the worst natural hazards, killing more people in the USA on average than hurricanes or tornadoes [see http://www.nws.noaa.gov/om/hazstats.shtml] and causing substantial damage to property and sensitive equipment. Although lightning flashes have been studied for many decades, several fundamental aspects of lightning physics are still not understood, including how they begin (initiate) and how they travel (propagate) through clouds and clear air to the ground. This research project will focus on lightning initiation and lightning propagation in a new way to help explain how these two fundamental aspects of lightning may work. The measurements proposed will be made at the NASA Kennedy Space Center (KSC) in Florida. Lightning is especially frequent at KSC, causes expensive operational delays, and sometimes damages sensitive rocket and shuttle vehicles and/or facilities.The observation scheme for this project is to use five different 'eyes' (measurement systems) to observe lightning processes: (1) slow antennas, (2) fast antennas, (3) a network of seven crossed-loop magnetic sensors, (4) the KSC field mill network and (5) the KSC Lightning Detection And Ranging (LDAR) system. All of these sensors look at the electric or magnetic changes caused by lightning as it accelerates and moves charge. The five types of sensors are well known in lightning research, but all five have never before been used together to observe flashes. The different instruments respond to different parts of a flash: some parts are only a few meters in length while others are as long as a few thousand meters. A key feature of this project will be the use of a recently developed technique for the crossed-loop sensor network that allows one to determine the location of long (~1000 meter), fast electromagnetic pulses from lightning. The locations of these long pulses, found in both in-cloud and cloud-to-ground lightning flashes, have not been known in the past. The intellectual merit of the project stems from combining the data from these five sensors to provide new insights into how lightning initiation and lightning propagation work.The main broader impacts of the project fall into two categories: improving lightning safety and training new scientists. Developing a better understanding of the mechanisms behind a particular hazard (lightning, in this case) can lead to new and improved ways of protecting people and property from that hazard. Lightning protection systems are primarily based in science, and determining how lightning initiates and propagates may reveal new ways to protect objects on the ground and in the air. This project will also be important for the development and training of several new scientists, including one graduate student pursuing a Ph.D. degree, and two undergraduate physics students interested in being involved in scientific research. The results of this project will also be broadly disseminated in the peer-reviewed literature.
闪电是最严重的自然灾害之一,在美国,闪电造成的死亡人数平均超过飓风或龙卷风[见http://www.nws.noaa.gov/om/hazstats.shtml],并对财产和敏感设备造成重大损害。尽管人们已经对闪电进行了几十年的研究,但闪电物理学的几个基本方面仍然不清楚,包括它们如何开始(启动)以及它们如何通过云层和晴朗的空气传播(传播)到地面。该研究项目将以一种新的方式专注于闪电引发和闪电传播,以帮助解释闪电的这两个基本方面如何工作。拟议的测量将在佛罗里达的美国航天局肯尼迪航天中心(KSC)进行。闪电在KSC特别频繁,导致昂贵的操作延迟,有时会损坏敏感的火箭和航天飞机车辆和/或设施。(测量系统)观测闪电过程:(1)慢速天线,(2)快速天线,(3)七个交叉环磁传感器网络,(4)KSC场磨网络和(5)KSC闪电探测和测距(LDAR)系统。所有这些传感器都可以观察闪电加速和移动电荷时引起的电或磁变化。这五种类型的传感器在闪电研究中是众所周知的,但这五种传感器以前从未一起用于观察闪电。不同的仪器对闪光的不同部分做出反应:有些部分只有几米长,而其他部分则长达几千米。该项目的一个关键特点是使用最近开发的交叉回路传感器网络技术,该技术允许人们确定闪电产生的长(~1000米)快速电磁脉冲的位置。这些长脉冲的位置,在云中和云对地闪电中都被发现,在过去还不知道。该项目的智力价值源于将这五个传感器的数据结合起来,为闪电引发和闪电传播的工作原理提供新的见解。该项目的主要影响分为两类:提高闪电安全性和培训新的科学家。更好地理解特定危险(在这种情况下是闪电)背后的机制可以导致保护人员和财产免受该危险的新的和改进的方法。雷电防护系统主要以科学为基础,确定闪电如何启动和传播可能会揭示保护地面和空中物体的新方法。该项目对培养和培训几名新科学家也很重要,其中包括一名攻读博士学位的研究生。学位,和两个本科物理学生有兴趣参与科学研究。这一项目的结果也将在同行审查的文献中广泛传播。

项目成果

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会议论文数量(0)
专利数量(0)

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Thomas Marshall其他文献

Contrasting Features of Parton Energy Loss in Heavy-ion Collisions at RHIC and the LHC
RHIC 和 LHC 重离子碰撞中帕顿能量损失的对比特征
  • DOI:
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Thomas Marshall;Philip Suh;Gang Wang;H. Huang
  • 通讯作者:
    H. Huang
P-044 External Control Analysis for KarMMa-3: Idecabtagene Vicleucel (ide-cel) vs Real-World Standard of Care (RW SoC; COTA) for Triple-Class Exposed (TCE) Relapsed/Refractory Multiple Myeloma (RRMM)
  • DOI:
    10.1016/s2152-2650(24)01947-5
  • 发表时间:
    2024-09-01
  • 期刊:
  • 影响因子:
  • 作者:
    Hans Lee;Kevin Towle;Shannon Cope;Sichen Liu;Jenny Chen;Sundar Jagannath;Sikander Ailawadhi;Thomas Marshall;Teofilia Acheampong;Devender Dhanda
  • 通讯作者:
    Devender Dhanda
Nutritional Supplementation for the Prevention of Muscle Atrophy in Older People
预防老年人肌肉萎缩的营养补充
  • DOI:
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Hope Edwards;Huw Jones;Jamie Moseley;Thomas Marshall;Sherif F. El;Myo Nyein Aung;Matthew Farrow
  • 通讯作者:
    Matthew Farrow
Utility of history, examination and laboratory tests in screening those returning to Europe from the tropics for parasitic infection
利用病史、检查和实验室检测来筛查从热带地区返回欧洲的人是否患有寄生虫感染
  • DOI:
    10.1046/j.1365-3156.2000.00642.x
  • 发表时间:
    2000
  • 期刊:
  • 影响因子:
    3.3
  • 作者:
    C. Whitty;B. Carroll;M. Armstrong;C. Dow;D. Snashall;Thomas Marshall;P. Chiodini
  • 通讯作者:
    P. Chiodini
The selection and training of volunteers for a rural, home-based hospice program
  • DOI:
    10.1016/s0738-3991(82)80002-5
  • 发表时间:
    1982-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Paul T. Werner;Phillip S. Chard;Carl Hawkins;Thomas Marshall
  • 通讯作者:
    Thomas Marshall

Thomas Marshall的其他文献

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{{ truncateString('Thomas Marshall', 18)}}的其他基金

Lightning Initiation Studies
闪电引发研究
  • 批准号:
    1532038
  • 财政年份:
    2015
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Standard Grant
Multi-Frequency Studies of Lightning Initiation and Propagation
闪电发生和传播的多频率研究
  • 批准号:
    1110030
  • 财政年份:
    2011
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Standard Grant
Studies of New Elements for Global Electric Circuit Models
全球电路模型新要素的研究
  • 批准号:
    0605026
  • 财政年份:
    2006
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Standard Grant
International Workshop on Historical Scientific Instruments in Universities; June 21-24, 2007; Oxford, MS
大学历史科学仪器国际研讨会;
  • 批准号:
    0620995
  • 财政年份:
    2006
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Standard Grant
Studies of the Evolution of Thunderstorm Electricity and Lightning
雷暴电和闪电演化研究
  • 批准号:
    0220842
  • 财政年份:
    2002
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Standard Grant
The Electrical Evolution of Thunderstorms
雷暴的电力演化
  • 批准号:
    9626542
  • 财政年份:
    1998
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Continuing Grant
Measurements of the Charge, Size, and Type of Thunderstorm Precipitation Particles
雷暴降水粒子的电荷、尺寸和类型的测量
  • 批准号:
    9311749
  • 财政年份:
    1993
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Continuing Grant
Further Studies of Electrical Conditions inside Thunderstorms
雷暴内部电气条件的进一步研究
  • 批准号:
    8719777
  • 财政年份:
    1988
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Continuing Grant
Electric Field Measurements Inside New Mexico Thunderstorms
新墨西哥州雷暴内部的电场测量
  • 批准号:
    8400624
  • 财政年份:
    1984
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Continuing Grant
Thunderstorm Electric Field Measurements in the Gulf of Mexico
墨西哥湾雷暴电场测量
  • 批准号:
    8303347
  • 财政年份:
    1983
  • 资助金额:
    $ 10.43万
  • 项目类别:
    Standard Grant

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用于复杂高频多绕组磁性元件集成仿真和设计的混合分析和数据驱动模型
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