کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1776263 1523609 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electric discharges produced by clouds of charged water droplets in the presence of moving conducting object
ترجمه فارسی عنوان
تخلیه الکتریسیته تولید شده توسط ابرهای قطره آب شارژ در حضور جابجایی هدایت کننده
کلمات کلیدی
تخلیه الکتریکی، مصنوعی شارژ ابرها، رعد و برق، شروع
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
چکیده انگلیسی


• Moving conductors can initiate electric discharges from artificially charged clouds.
• Cloud–projectile–ground discharge involves two positive leaders with similar speeds.
• Return-stroke-like process is always observed in projectile-initiated discharges.

The possibility of initiation of electric discharges by a crossbow bolt (projectile) moving in the electric field of a cloud of negatively charged water droplets has been demonstrated for the first time. Over one hundred of discharges have been produced. For each event, a high-speed video camera recorded the images of upward positive leaders developing from both the nearby grounded sphere and the projectile, followed by the return-stroke-like process. Corresponding currents were measured and integrated photos of the events were obtained. The results can help to improve our understanding of lightning initiation by airborne vehicles and by a vertical conductor rapidly extended below the thundercloud in order to trigger lightning with the rocket-and-wire technique.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 135, December 2015, Pages 36–41
نویسندگان
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