globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50271
论文题名:
Characterization and applications of VLF/LF source locations from lightning using the Huntsville Alabama Marx Meter Array
作者: Bitzer P.M.; Christian H.J.; Stewart M.; Burchfield J.; Podgorny S.; Corredor D.; Hall J.; Kuznetsov E.; Franklin V.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:8
起始页码: 3120
结束页码: 3138
语种: 英语
英文关键词: electric field ; hamma ; instrumentation ; lightning ; location ; vlf/lf
Scopus关键词: Electric fields ; Electric properties ; Frequency bands ; Location ; Radiation ; Statistics ; Electric field change ; hamma ; instrumentation ; Lightning detection ; North Alabama Lightning Mapping Array ; Very high frequency ; Very low frequency ; vlf/lf ; Lightning ; atmospheric electricity ; electric field ; lightning ; waveform analysis ; Alabama ; Huntsville ; United States
英文摘要: Arrays that detect and locate the four-dimensional spacetime positions of radiation sources from lightning have largely utilized sensors sensitive to the very high frequency (VHF) regime with ∼ 15 km baselines or very low frequency/low frequency (VLF/LF) regime with ∼ 100 km baselines. This paper details initial results from the newly developed Huntsville Alabama Marx Meter Array (HAMMA), consisting of Marx meters (electric field change meters) sensitive to a frequency band ∼ 1 Hz to 400 kHz. The arrival time of HAMMA waveforms due to radiation sources from lightning are used to determine the spacetime position of these sources. The locations are compared with two well-documented and operational arrays, the National Lightning Detection Network (NLDN) and the North Alabama Lightning Mapping Array (NALMA). The standard deviation of the difference between HAMMA and NLDN locations of return strokes is 305 and 266 m in x and y, respectively, while the standard deviation of the difference between HAMMA and NALMA sources is 237, 226, and 688 m in x, y and z, respectively. We further show that NLDN intracloud locations differ in horizontal distance from the corresponding HAMMA locations by a median value of 479 m. In addition, we use HAMMA source locations to map several lightning flashes in the VLF/LF and show HAMMA sources largely map out the same electrical extent as VHF sources and provide unique insights to the properties of the discharges occurring. Finally, we show that VLF/LF sources can determine the leader polarity in several example flashes but not necessarily whether a flash comes to ground. Copyright © 2013 American Geophysical Union. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63811
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Department of Physics, University of Alabama in Huntsville, Huntsville AL, United States; Earth Systems Science Center, University of Alabama in Huntsville, Huntsville AL, United States; Department of Atmospheric Science, University of Alabama in Huntsville, Huntsville AL, United States; Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, Huntsville AL, United States; Institute of Nuclear Physics, Moscow State University, Moscow, Russian Federation

Recommended Citation:
Bitzer P.M.,Christian H.J.,Stewart M.,et al. Characterization and applications of VLF/LF source locations from lightning using the Huntsville Alabama Marx Meter Array[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(8)
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