ELECTROMAGNETIC EFFECTS OF ACOUSTIC AND ATMOSPHERIC GRAVITY WAVES IN THE NEAR-EARTH ATMOSPHERE

Purpose: Acoustic and atmospheric gravity waves (AAGW) are generated by many natural and anthropogenic sources. The AAGW propagation at ionospheric heights is accompanied by the generation of disturbances in the magnetic and electric fields. The plasma presence plays a crucial role. The mechanisms for generating electrical and magnetic disturbances in the near-Earth atmosphere by the AAGW have been studied much worse. Therefore, the validation of the capability to generate electromagnetic disturbances in the near-Earth atmosphere by the AAGW is an urgent problem. The purpose of this paper is to describe the mechanism for generating disturbances in the electric and magnetic fields in the near-Earth atmosphere under the action of AAGW and to estimate the amplitudes of these disturbances for various AAGW sources. Design/methodology/approach: The impact of a series of highenergy sources often results in the generation of synchronous disturbances in the acoustic and geoelectric (atmospheric) fields, when an approximate proportionality between the pressure amplitude and the amplitude of the disturbances in the atmospheric electric field is observed to occur. Based on the observational data and making use of the Maxwell equations, the theoretical estimates of the disturbances in the electric and magnetic fields have been obtained. Findings: Simplified expressions have been obtained for estimating the amplitudes of the electric and magnetic fields under the action of the AAGW generated by natural and manmade sources. The amplitudes of the electric and magnetic fields generated by the AAGW of natural and manmade origin, which travel in the near-Earth atmosphere, have been calculated. The amplitudes of the AAGW generated electric and magnetic fields are shown to be large enough to be detected with the existing electrometers and fluxmeter magnetometers. The magnitudes of the amplitudes of the electric and magnetic fields generated in the near-Earth atmosphere under the action of AAGW are large enough to trigger coupling between the subsystems in the Earth–atmosphere–ionosphere–magnetosphere system. Conclusions: The estimates and not numerous observations are in good agreement. Key words: acoustic and atmospheric gravity waves, near-Earth atmosphere, volume charge, atmospheric pressure disturbances, electric field, magnetic field

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ANALISIS HUBUNGAN SALURAN TEGANGAN TINGGI LISTRIK TERHADAP JARINGAN SELULAR DI DAERAH GRAHA INDAH TAMBAKBOYO LAMONGAN

JOUTICA ◽

10.30736/jti.v4i2.338 ◽

2019 ◽

Vol 4 (2) ◽

pp. 255

Author(s):

Kemal Farouq Mauladi ◽

Nurul Fuad

Keyword(s):

Public Health ◽

Magnetic Fields ◽

Electric Field ◽

Cellular Networks ◽

Electromagnetic Fields ◽

Electricity Generation ◽

Negative Impact ◽

Electrical Energy ◽

Electric And Magnetic Fields ◽

The Impact

Telecommunications technology is developing very rapidly, ranging from users or engineers. The development of smartphone smartphones is also increasingly in demand, so that the use of electricity needs is also increasing. The need for electricity usage has resulted in more standing voltage in some settlements. The establishment of sutet will have a negative impact on public health. In addition, the influence of electrical energy on humans occurs because the electrical energy generated by electricity generation or electricity that is channeled gives rise to electromagnetic fields. The higher the voltage required by an equipment, the greater the electric field that is distributed. Besides that, it can also find ways to reduce the negative impact of the electric and magnetic fields produced by SUTET which impacts the process of the occurrence of electric and magnetic fields on SUTET. From the problems above, the author intends to determine the effect or correlation between the impact of SUTET on cellphone network transmissions or channels. This research can later determine the negative impact caused by SUTET for the surrounding community, and the impact of SUTET radiation on cellular networks.

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Atmospheric gravity waves from the impact of comet Shoemaker-Levy 9 with Jupiter

Geophysical Research Letters ◽

10.1029/94gl01057 ◽

1994 ◽

Vol 21 (11) ◽

pp. 1083-1086 ◽

Cited By ~ 23

Author(s):

A. P. Ingersoll ◽

H. Kanamori ◽

T. E. Dowling

Keyword(s):

Gravity Waves ◽

Atmospheric Gravity Waves ◽

Atmospheric Gravity ◽

The Impact

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Modulation of the midlatitude ionosphericEregion by atmospheric gravity waves through polarization electric field

Journal of Geophysical Research Atmospheres ◽

10.1029/2004ja010508 ◽

2004 ◽

Vol 109 (A12) ◽

Cited By ~ 21

Author(s):

T. Yokoyama

Keyword(s):

Electric Field ◽

Gravity Waves ◽

Atmospheric Gravity Waves ◽

Polarization Electric Field ◽

Atmospheric Gravity

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An Introduction to Atmospheric Gravity Waves

10.1016/s0074-6142(02)x8001-2 ◽

2002 ◽

Keyword(s):

Gravity Waves ◽

Atmospheric Gravity Waves ◽

Atmospheric Gravity

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Observation evidences of atmospheric Gravity Waves induced by seismic activity from analysis of subionospheric LF signal spectra

Natural Hazards and Earth System Science ◽

10.5194/nhess-7-625-2007 ◽

2007 ◽

Vol 7 (5) ◽

pp. 625-628 ◽

Cited By ~ 36

Author(s):

A. Rozhnoi ◽

M. Solovieva ◽

O. Molchanov ◽

P.-F. Biagi ◽

M. Hayakawa

Keyword(s):

Gravity Waves ◽

Fresnel Zone ◽

Signal Amplitude ◽

Magnetic Storms ◽

Frequency Range ◽

Atmospheric Gravity Waves ◽

Period Range ◽

Before And After ◽

Atmospheric Gravity ◽

Large Earthquakes

Abstract. We analyze variations of the LF subionospheric signal amplitude and phase from JJY transmitter in Japan (F=40 kHz) received in Petropavlovsk-Kamchatsky station during seismically quiet and active periods including also periods of magnetic storms. After 20 s averaging, the frequency range of the analysis is 0.28–15 mHz that corresponds to the period range from 1 to 60 min. Changes in spectra of the LF signal perturbations are found several days before and after three large earthquakes, which happened in November 2004 (M=7.1), August 2005 (M=7.2) and November 2006 (M=8.2) inside the Fresnel zone of the Japan-Kamchatka wavepath. Comparing the perturbed and background spectra we have found the evident increase in spectral range 10–25 min that is in the compliance with theoretical estimations on lithosphere-ionosphere coupling by the Atmospheric Gravity Waves (T>6 min). Similar changes are not found for the periods of magnetic storms.

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A study of atmospheric gravity waves and travelling ionospheric disturbances at equatorial latitudes

Annales Geophysicae ◽

10.1007/s00585-997-1048-4 ◽

1997 ◽

Vol 15 (8) ◽

pp. 1048-1056 ◽

Cited By ~ 41

Author(s):

R. L. Balthazor ◽

R. J. Moffett

Keyword(s):

Gravity Waves ◽

Large Scale ◽

Ionospheric Disturbance ◽

Magnetic Equator ◽

Ionospheric Disturbances ◽

Atmospheric Gravity Waves ◽

Opposite Hemisphere ◽

Travelling Ionospheric Disturbances ◽

F Region ◽

Atmospheric Gravity

Abstract. A global coupled thermosphere-ionosphere-plasmasphere model is used to simulate a family of large-scale imperfectly ducted atmospheric gravity waves (AGWs) and associated travelling ionospheric disturbances (TIDs) originating at conjugate magnetic latitudes in the north and south auroral zones and subsequently propagating meridionally to equatorial latitudes. A 'fast' dominant mode and two slower modes are identified. We find that, at the magnetic equator, all the clearly identified modes of AGW interfere constructively and pass through to the opposite hemisphere with unchanged velocity. At F-region altitudes the 'fast' AGW has the largest amplitude, and when northward propagating and southward propagating modes interfere at the equator, the TID (as parameterised by the fractional change in the electron density at the F2 peak) increases in magnitude at the equator. The amplitude of the TID at the magnetic equator is increased compared to mid-latitudes in both upper and lower F-regions with a larger increase in the upper F-region. The ionospheric disturbance at the equator persists in the upper F-region for about 1 hour and in the lower F-region for 2.5 hours after the AGWs first interfere, and it is suggested that this is due to enhancements of the TID by slower AGW modes arriving later at the magnetic equator. The complex effects of the interplays of the TIDs generated in the equatorial plasmasphere are analysed by examining neutral and ion winds predicted by the model, and are demonstrated to be consequences of the forcing of the plasmasphere along the magnetic field lines by the neutral air pressure wave.

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