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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:39 |
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Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Monitoring atmospheric phenomena severe nature using seismo-acoustic network of Ploștina, Romania
Authors:
I. STANCU (1), Daniela GHICA (2), M. RADULIAN (2)
Affiliation:
(1) University of Bucharest, Faculty of Physics, Măgurele, P.O.BOX MG-11, Magurele, România
(2) National Institute for Earth Physics, Măgurele, România
E-mail
iulianstancu10@yahoo.com
Keywords:
infrasound, seismo acoustic network
Abstract:
It is known that an average of 44 lightning flashes occur around the globe every second. Most of this type of activity is concentrated in tropical continental areas especially in Africa (about the third percents of the total activity). Since observations are difficult in these areas, the IMS (Infra-sound Monitoring Stations) network constitutes a relevant tool for the observation of wave activity in relation with thunderstorms.The purpose of this study is to analyze the infra-sound network capacity from Ploștina (Romania) to detect lightning and storms.The network is part of the National Institute for Earth Physics (NIEP) and consists of seven measurement points and the communication is done via an optical fiber using TCP / IP to data from the National Center NIEP. The both the gravity waves activity and infra-sound activity produced by lightning are observed when the thunderstorm is close to infra-sound station. The infra-sound signals are detected and their characteristics (back-azimuth, speed, frequency content)are automatically estimated,using a DFX-PMCC detector. For the data processing and analysis the PTS Portable Infra-sound Array supplied by Treaty Organization Preparatory Commission on Nuclear Test Ban (CTBTO)program was used.The results proved that infra-sound network is a good tool in identifying and monitoring of the severe weather phenomena like thunderstorms.
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