کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4451001 1620570 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An improved Lorentzian technique for evaluating resonance characteristics of the Earth-ionosphere cavity
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
An improved Lorentzian technique for evaluating resonance characteristics of the Earth-ionosphere cavity
چکیده انگلیسی

The effectiveness of various formulations of the Lorentzian procedure for estimating Schumann resonance (SR) characteristics of the Earth-ionosphere waveguide from transient electromagnetic signals is tested in the limits of a simplified, spherically uniform model of the resonator. It is shown that the major improvement, in comparison with the “classic” Lorentzian formulation, is achieved by consideration of the intra-modal phase interference. The effect of the “limited frequency dispersion” inherent in the “classic” Lorentzian approach – that is of substantial importance at the lowest SR modes – can be effectively neutralized by interpolating the values for the propagation parameter between the adjacent modal frequencies. Several practical aspects of applying the Lorentzian procedure to transient signals are also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Research - Volume 91, Issues 2–4, February 2009, Pages 188–193
نویسندگان
, ,