Some results of observations of positive lightning discharges and relative phenomena in the east of Siberia |
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| Authors: | V.A. Mullayarov V.I. Kozlov A.A. Toropov R.R. Karimov |
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| Affiliation: | 1. National Key Laboratory on Electromagnetic Environmental Effects and Electro-Optical Engineering, PLA University of Science and Technology, Nanjing, China;2. Army Aviation Institute, Beijing, China;3. PLA University of Science and Technology, Nanjing, China;1. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipition of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing 210044, China;2. Laboratory for Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;1. Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;2. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China;3. Department of Physics, National Cheng Kung University, Tainan, Taiwan;4. Shandong Research Institute of Meteorology, Jinan 250031, China;1. Laboratoire Procédés, Matériaux et Energie Solaire, PROMES-CNRS, UPR 8521, 7 rue du four solaire, 66120 Font-Romeu Odeillo, France;2. CORIA, Site Universitaire du Madrillet, 675 avenue de l’Université, BP 12, 76801 Saint Etienne du Rouvray Cedex, France |
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| Abstract: | We have considered spatial distributions of positive lightning discharges in the east of Siberia for the summer seasons of 2003–2007 and properties of their electromagnetic signals with the ELF “slow tail”, which, as is known, can be accompanied by sprites. There are two main regions of positive discharges located in the south and west of Yakutsk. Two other “centers” (the northeastern and the eastern) are located in high-mountainous regions. In these regions the positive discharges intensity can exceed the negative discharge intensity.The electromagnetic signals in the ELF range (usually in the form of two half-cycles) were observed after the VLF atmospherics were recorded in the high-latitude regions. The delay of ELF pulses relative to the corresponding atmospherics was 0–7 ms. The long (up to 350 ms) events of quasi-periodic ELF oscillations with the period of about 7 ms (which corresponds to the quasi-period of ELF pulses) were revealed. |
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