Article

Article title MONITORING OF THE STORM ACTIVITY CHARACTERISTICS IN THE SOUTH OF THE EUROPEAN PART OF RUSSIA
Authors A.K. Adzhiev, G.V. Kupovykh, V.Y. Andrievska, N.V. Yurchenko, T.V. Kudrinskaya, A.A. Redin
Section SECTION IV. ELECTRONICS AND CONTROL
Month, Year 04, 2017 @en
Index UDC 551.594.21
DOI
Abstract The results of instrumental studies of storm activity in the south of the European part of the Russian Federation are obtained. The thunder Registrar LS8000 consists of eight thunderstorm seekers and a central point for receiving and processing information. Each lightning finder has two sensors - low-frequency and high-frequency. The low-frequency sensor captures, mainly, lightning discharges of the Cloud-Earth type. The high-frequency sensor fixes lightning discharges only of Cloud-Cloud type and inside of the cloud. The survey areas for different types of lightning discharges are as follows: for Cloud-Earth lightning discharges, the radius of the field of view is 625 km from the centers of the network, while the Cloud-Cloud radius is 325 km. To display data on lightning discharges on a terrain map, the LTS-2005 software application is included in the lightning-routing network, which allows a real-time visual information implementation. To measure the intensity of the electric field of the atmosphere during thunderstorms, a hardware-software complex including the electric field field meters EFM550 (Vaisala) was used, and software was used to solve problems of measuring, transmitting and visualizing the values of the electric field strength of the atmosphere and the parameters of lightning discharges. The hardware-software complex EFM550 provides measurement of the electric field strength of the atmosphere at a frequency of 2 Hz. The maximum and minimum values for measuring the electric field strength are ± 10,000 V/m. The features of spatial and temporal variations of thunderstorm activity within a radius of 650 000 km around the center of storm DF network in the city of Nalchik, covering the North Caucasus and the Black Sea coast are found. Total number of thunderstorm days per year on the territory in question is about 240.The share of terrestrial lightning discharges (positive and negative) on the territory equal to 13 % of the total number of lightning, and the proportion of cloud and intercloud discharge is 88 %. According to the study, the proportion of positive discharge is about 23 % of the total number of cloud-to-ground discharges. The average value of the currents in the negative lightning is 13.5 kA, in the positive – 10.6 kA.

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Keywords Storm; lightning; lightning currents; storm susceptibility; storm direction finding; thunder-storm processes, electric field.
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