Broadband Electric Field Measurements and Mapping of Lightning Flashes Over Langmuir Laboratory
During August and September of 2006, the Lightning Mapping Array (LMA) being operated at New Mexico Techs Langmuir Laboratory was augmented by broadband radiation measure- ments as well as by slow and fast observations of lightning electric ˉeld changes. The measurements were made at the mountaintop observatory (3.2 km altitude) near the center of the LMA, which was being operated in a mode that located radiation sources as often as every 10 microseconds. We recorded broadband electric ˉeld-change waveforms typically at a time resolution of 10 to 40 nanoseconds for a duration of 100 to 320 milliseconds at the beginning of both intracloud and cloud-to-ground discharges. One purpose of the studies is to gain a better understanding of the initial breakdown processes of light- ning. The broadband data were recorded in conjunction with the logarithmic output of an LMA receiver to determine the nature of events located by the LMA. In this paper we report initial results for a few example flashes.
Harald E. Edens Graydon Aulich Paul R. Krehbiel William Rison Nicholas OConnor Matthew Briggs Steven J. Hunyady Michael Stock Ronald J. Thomas William P. Winn
Langmuir Laboratory for Atmospheric Research, New Mexico Tech, Socorro, NM 87801, USA
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）