کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1764060 1020038 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensing the Earth’s low ionosphere during solar flares using VLF signals and goes solar X-ray data
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Sensing the Earth’s low ionosphere during solar flares using VLF signals and goes solar X-ray data
چکیده انگلیسی

An analysis of D-region electron density height profile variations, induced by four isolated solar X-ray flares during period from September 2005 to December 2006, based on the amplitude and the phase delay perturbation of 22.1 kHz signal trace from Skelton (54.72 N, 2.88 W) to Belgrade (44.85 N, 20.38 E), coded GQD, was carried out. Solar flare data were taken from NOAA GOES12 satellite one-minute listings. For VLF data acquisition and recordings at the Institute of Physics, Belgrade, Serbia, the AbsPAL system was used. Starting from LWPCv21 code (Ferguson, 1998), the variations of the Earth-ionosphere waveguide characteristic parameters, sharpness and reflection height, were estimated during the flare conditions. It was found that solar flare events affected the VLF wave propagation in the Earth-ionosphere waveguide by changing the lower ionosphere electron density height profile, in a different way, for different solar flare events.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 53, Issue 11, 1 June 2014, Pages 1595–1602
نویسندگان
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