Subionospheric VLF observations of transmitter‐induced precipitation of inner radiation belt electrons

Inan, U. S.; Gołkowski, Mark; Casey, M. K.; Moore, R. C.; Peter, W. B.; Kulkarni, P.; Kossey, Paul; Kennedy, Edward J.; Meth, S. Z.; Smit, Pieter

doi:10.1029/2006gl028494

Cited by 45 publications

(80 citation statements)

References 25 publications

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“…In order to explain the existence of electron precipitation zones at middle latitudes, several hypotheses are currently under investigation (Millan and Thorne, 2007). One of these hypotheses regarding the connection with ground-based radio-transmitters has been recently confirmed (Inan et al, 2007a). Another hypothesis concerning global thunderstorms activity has also been considered and it was confirmed that lightning induces electron precipitation (Inan et al, 2007b).…”

Section: Introductionmentioning

confidence: 92%

Analysis of NOAA particle data and correlations to seismic activity

Fidani

Battiston

2008

Nat. Hazards Earth Syst. Sci.

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Abstract.A decade of NOAA-15 particle flux data offers an opportunity to test claims of correlations between seismic activity and effects on the ionosphere. Over the last two decades, potentially interesting observations in the ionosphere-magnetosphere transition region have been investigated. Specifically these consists of anomalous particle fluxes detected by several space experiments and correlated with the earthquake occurrence. These particle fluxes are characterised by anomalous short-term and sharp increases in high energy particle counting rates, referred to as particle bursts. In this work, more general rules for particle bursts selection have been defined and tested on the NOAA database, for particles inside and outside the South Atlantic Anomaly region. The whole period of ten years burst activity from NOAA-15 database is reported. Data from four satellites, NOAA-15, 16, 17 and 18, were analyzed during periods of solar quiet activity in connection with strong earthquakes, revealing presence of bursts detected on more than one satellite close to the time of the same seismic events. This preliminary study presented here concentrates on periods of major Indonesian earthquakes from 1998 to date, including Sumatra event M=9, during which geomagnetic Ap index was less than 16 and with no sudden ionospheric disturbances. During this period particle burst temporal distributions have shown some correspondence with earthquake times. The limits of the analysis presented in this papers are discussed as well as prospects for future work.

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Section: Introductionmentioning

confidence: 92%

Analysis of NOAA particle data and correlations to seismic activity

Fidani

Battiston

2008

Nat. Hazards Earth Syst. Sci.

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“…The interaction between man-made VLF signals and energetic electrons in the magnetosphere and, in particular, the problem of wave-induced electron precipitation, have been a subject of intensive studies during the last few decades (Helliwell and Katsufrakis 1974;Karpman and Shklyar 1977;Matsumoto 1979;Southwood 1983;Albert 2001;Trakhtengerts et al 2003;Inan et al 2007). The number of papers on this problem is enormously large, and those mentioned above constitute only a small part of the papers where references to the most important studies may be found.…”

Section: Peculiarities Of Proton Resonance Interaction With Vlf Signalsmentioning

confidence: 99%

Oblique Whistler-Mode Waves in the Inhomogeneous Magnetospheric Plasma: Resonant Interactions with Energetic Charged Particles

2009

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A consistent account is given of the theory of resonant interactions between energetic charged particles and a whistler-mode wave propagating obliquely to the nonuniform geomagnetic field in the inhomogeneous magnetospheric plasma. The basic equations for the wave field and charged particle dynamics are presented, with the emphasis being placed on the parameters governing the problem. A Hamiltonian approach is consistently used in the analysis of the particle equations of motion which are discussed in detail and solved analytically in various cases. Two applications of the theory are considered. First, we calculate the growth (or damping) rate for a whistler-mode wave propagating obliquely to geomagnetic field in the magnetosphere. Secondly, we estimate the proton precipitation into the upper atmosphere induced by a VLF transmitter signal.

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“…When detectable, higher harmonics provide useful information on propagation condition and characteristics of the lower ionosphere (Singh and Singh, 1996;Kumar et al, 2008). Barr et al (2000) Injection of VLF signals from ground based transmitters nevertheless offer more reliable choices for studying polarization effects and ionosphere anisotropy because electromagnetic source characteristics are well known (e.g., Inan et al 2007). Harrison et al (2010) suggest using tweeks to investigate possible ionospheric disturbances related to seismic activity.…”

Section: Sferics and Tweeksmentioning

confidence: 99%

A Review of Low Frequency Electromagnetic Wave Phenomena Related to Tropospheric-Ionospheric Coupling Mechanisms

et al. 2011

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Investigation of coupling mechanisms between the troposphere and the ionosphere requires a multidisciplinary approach involving several branches of atmospheric sciences, from meteorology, atmospheric chemistry, and fulminology to aeronomy, plasma physics, and space weather. In this work, we review low frequency electromagnetic wave propagation in the Earthionosphere cavity from a troposphere-ionosphere coupling perspective. We discuss electromagnetic wave generation, propagation, and resonance phenomena, considering atmospheric, ionospheric and magnetospheric sources, from lightning and transient luminous events at low altitude to Alfven waves and particle precipitation related to solar and magnetospheric processes. We review in situ ionospheric processes as well as surface and space weather phenomena that drive troposphere-ionosphere dynamics. Effects of aerosols, water vapor distribution, thermodynamic parameters, and cloud charge separation and electrification processes on atmospheric electricity and electromagnetic waves are reviewed. We also briefly revisit ionospheric irregularities such as spread-F and explosive spread-F, sporadic-E, traveling ionospheric disturbances, Trimpi effect, and hiss and plasma turbulence. Regarding the role of the lower boundary of the cavity, we review transient surface phenomena, including seismic activity, earthquakes, volcanic processes and dust electrification. The role of surface and https://ntrs.nasa.gov/search.jsp?R=20120011991 2018-05-12T18:35:14+00:00Z atmospheric gravity waves in ionospheric dynamics is also briefly addressed. We summarize analytical and numerical tools and techniques to model low frequency electromagnetic wave propagation and solving inverse problems and summarize in a final section a few challenging subjects that are important for a better understanding of tropospheric-ionospheric coupling mechanisms.

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Subionospheric VLF observations of transmitter‐induced precipitation of inner radiation belt electrons

Cited by 45 publications

References 25 publications

Analysis of NOAA particle data and correlations to seismic activity

Analysis of NOAA particle data and correlations to seismic activity

Oblique Whistler-Mode Waves in the Inhomogeneous Magnetospheric Plasma: Resonant Interactions with Energetic Charged Particles

A Review of Low Frequency Electromagnetic Wave Phenomena Related to Tropospheric-Ionospheric Coupling Mechanisms

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