Estimating the Lower Ionosphere Height and Lightning Location Using Multimode "Tweek" Atmospherics
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Переглянути архів Інформація| Поле | Співвідношення | |
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Estimating the Lower Ionosphere Height and Lightning Location Using Multimode "Tweek" Atmospherics
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| Creator |
Shvets, Аleksandr V.
Serdiuk, Tetiana M. Сердюк, Татьяна Николаевна Горишняя, Ю. В. Hobara, Y. Hayakawa, M. Швець, Олександр Володимирович Serdyuk, Tatyana N. Gorishnyaya, Y. V. Швец, Александр Владимирович Сердюк, Тетяна Миколаївна |
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| Subject |
earth ionosphere waveguide
frequency dispersion ionospheric heights lightning location lower ionosphere preliminary analysis propagation distances tweek-atmospherics atmospherics cutoff frequency estimation inverse problems ionospheric measurement lightning waveguides ionosphere Scopus іоносферний хвилевід частотна дисперсія іоносферні висоти розташування блискавки нижня іоносфера попередній аналіз відстань розповсюдження твік-атмосферики атмосферики частота зрізу оцінка зворотня задача іоносферне вимірювання блискавка хвилеводи іоносфера скопус ионосферный волновод частотная дисперсия ионосферные высоты расположение молнии нижняя ионосфера предварительный анализ расстояние распространения твик-атмосферики атмосферики частота среза оценка обратная задача ионосферное измерение молния волноводы ионосфера |
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| Description |
Estimating the lower ionosphere height and lightning location using multimode "tweek" atmospherics [препринт] / A. V. Shvets, T. M. Serdiuk, Y. V. Gorishnyaya, Y. Hobara, M. Hayakawa // Journal of Atmospheric and Solar-Terrestrial Physics. — 2014. — Vol. 108. — p. 1—9. Використані метадані з http://www.scopus.com/record/display.url?eid=2-s2.0-84890818975&origin=resultslist&sort=plf-f&src=s&nlo=1&nlr=20&affilName=Dnipropetrovsk+national+university+of+railway+transport+named+after+academician+V.++Lazaryan&sid=A778DDC08D8B95BD0E7282E1C9AD4357.N5T5nM1aaTEF8rE6yKCR3A%3a63&sot=aff&sdt=afsp&sl=111&s=%28AF-ID%28%22Dnipropetrovsk+National+University+of+Railway+Transport+named+after+Academician+V.+Lazaryan%22+60017228%29%29&relpos=2&relpos=2&citeCnt=0&searchTerm=%28AF-ID%28\%26quot%3BDnipropetrovsk+National+University+of+Railway+Transport+named+after+Academician+V.+Lazaryan\%26quot%3B+60017228%29%29
EN: There is proposed a new method of estimating the effective ionospheric height of the Earth-ionosphere waveguide and the propagation distance of tweek-atmospherics. It is based on the compensation of waveguide frequency dispersion of a tweek signal, which enables us to improve the accuracy of deducing the cutoff frequencies, especially in the presence of noise. An approach to solve the inverse problem is suggested that reduces the task of finding both the source range and the waveguide cutoff frequencies by using the multimode characteristics of tweeks to an issue of one-dimensional optimization. Based on the numerical modeling of multimode tweek-atmospherics in the Earth-ionosphere waveguide with exponential vertical conductivity profile of the lower ionosphere, it was shown that the accuracy of estimating the effective waveguide height by the new method is good as about 100-400. m for the first and higher order modes. It then allows us to estimate the parameters of vertical conductivity profile of the lower ionosphere for a wide range of source distances from a few hundred to a few thousand kilometers, as long as two or more tweek harmonics can be detected. Preliminary analysis of experimental tweek records show a decrease of the effective height with increasing the mode number, and the scale height of the exponential vertical conductivity profile for the isotropic lower ionosphere model is estimated to be in a range of 0.4-2.5. km. © 2013 . Інститут радіофізики та електроніки ім. О. Я. Усикова, Харків; The University of Electro-Communications, Chofu Tokyo |
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| Date |
2014-09-16T08:31:44Z
2014-09-16T08:31:44Z 2014 |
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| Type |
Article
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| Identifier |
13646826
DOI: 10.1016/j.jastp.2013.11.007 http://www.researchgate.net/publication/259158848_Estimating_the_Lower_Ionosphere_Height_and_Li http://eadnurt.diit.edu.ua/jspui/handle/123456789/2644 http://www.sciencedirect.com/science/article/pii/S1364682613003064 |
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| Language |
en
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| Publisher |
Elsevier
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