کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8139049 1523574 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the QBO modulation in the frequency of occurrence of pre noon F3 layers over the dip equatorial location of Thiruvananthapuram
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
On the QBO modulation in the frequency of occurrence of pre noon F3 layers over the dip equatorial location of Thiruvananthapuram
چکیده انگلیسی
Using the ionosonde observations, over Thiruvananthapuram (8.5° N, 77oE, 0.5oN dip lat.), India, for a period of 20 years (1990-2009), the present study reveals the presence of quasi biennial oscillation (QBO) in the pre noon F3 layer occurrence percentage. The presence of a strong QBO modulation in the occurrence of pre noon F3 layers is observed during the period from 1992 to 2000 beyond which it is rather weak/nonexistent. The wavelet periodogram analysis indicates the fact that F3 occurrences are more during the eastward phase of MQBO and less during the westward phase of MQBO.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 179, November 2018, Pages 114-119
نویسندگان
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