Dynamical evolution of Schumann resonance frequency spectra during some strong Q-bursts

Author

Paul, Suman ; De, S.S.

Author_Institution

Centre of Adv. Study in Radio Phys. & Electron., Univ. of Calcutta, Kolkata, India

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

Schumann resonances (SR) observations from a tropical region near Kolkata at the estuary of the river Ganges merging into the Bay-of-Bengal (21.48° N, 88.61° E) are being made frequently. Several Q-bursts spectra are observed. Strong ELF transients are detected in the recorded data of SR. The dynamic evolution of electric and magnetic field components of the Q-bursts will be presented in this paper. Time series evolutions of signals of several Q-bursts are analyzed in the present study. It is observed that, the Q-burst amplitudes from 1 to 300 Hz of Q-bursts spectra for 1 sec FFT reaches about -47 dB near the first mode of SR frequency. This shows that Q-burst has the tendency to dominate within 1 to 300 Hz.

Keywords

atmospheric electromagnetic wave propagation; ionospheric electromagnetic wave propagation; lightning; radiowave propagation; time series; Bay-of-Bengal; ELF transient; Ganges River estuary; India; Kolkata; Q-burst amplitudes; Q-burst spectra; Schumann resonance frequency spectra dynamical evolution; Schumann resonance observation; electric field components; frequency 1 Hz to 300 Hz; lightning; magnetic field components; strong Q-burst; time series evolution; Discharges; Geophysical measurement techniques; Ground penetrating radar; Lightning; Sprites (computer); Strontium; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6050783

Filename

6050783