Statistical characteristics of ionospheric hiss waves

Xia, Zhiyang; Chen, Lunjin; Zhima, Zeren; Santolík, Ondrej; Horne, Richard B. ORCID: https://orcid.org/0000-0002-0412-6407; Parrot, Michel. 2019 Statistical characteristics of ionospheric hiss waves. Geophysical Research Letters, 46 (13). 7147-7156. 10.1029/2019GL083275

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Abstract/Summary

In this study, we use the observations of electromagnetic waves by DEMETER satellite to investigate propagation characteristics of low altitude ionospheric hiss. In an event study, intense hiss wave power is concentrated over a narrow frequency band with a central frequency that decreases as latitude decreases, which coincides to the variation of local proton cyclotron frequency fCH. The wave propagates obliquely to the background magnetic field and equatorward from high latitude region. We use about 6 years' observations to statistically study the dependence of ionospheric hiss wave power on location, local time, geomagnetic activity and season. The results demonstrate that the ionospheric hiss power is stronger on the dayside, under higher geomagnetic activity, in local summer and confined near the region where the local fCH is equal to the wave frequency. To explain the concentration of wave power, a ray tracing simulation is performed and reproduced the wave propagation process.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1029/2019GL083275
ISSN:	0094-8276
Additional Keywords:	ionoshpheric hiss, low-altitude hiss, plasmaspheric hiss, ray tracing, South Atlantic anomaly, statistical study
Date made live:	05 Jun 2019 12:41 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/523674

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