Results 121 to 130 of about 174 (149)
Identifying the source region of plasmaspheric hiss [PDF]
Geophysical Research Letters, 2015 AbstractThe presence of the plasmaspheric hiss emission around the Earth has been known for more than 50 years, but its origin has remained unknown in terms of source location and mechanism. The hiss, made of whistler mode waves, exists for most of the time in the plasmasphere and is believed to control the radiation belt surrounding the Earth which ...
Richard B Horne +2 more
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Substorm dependence of plasmaspheric hiss
Journal of Geophysical Research, 2004We analyze wave and particle data from the CRRES satellite to determine the variability of plasmaspheric hiss (0.1 < f < 2 kHz) with respect to substorm activity as measured by AE*, defined as the maximum value of the AE index in the previous 3 hours.
Nigel Meredith +2 more
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Plasmaspheric hiss overview and relation to chorus
Journal of Atmospheric and Solar-Terrestrial Physics, 2009A brief overview is given of the history of plasmaspheric hiss research, particularly in the context of the recent work by Bortnik et al. (2008) indicating that chorus could be the likely source of plasmaspheric hiss. Previous suggestions given in the literature for this theory are reviewed and then the mechanism itself is outlined, focusing on the ...
Nigel Meredith +2 more
exaly +3 more sources
Generation of unusually low frequency plasmaspheric hiss [PDF]
Geophysical Research Letters, 2014 AbstractIt has been reported from Van Allen Probe observations that plasmaspheric hiss intensification in the outer plasmasphere, associated with a substorm injection on 30 September 2012, occurred with a peak frequency near 100 Hz, well below the typical plasmaspheric hiss frequency range, extending down to ∼20 Hz.
Jacob Bortnik +2 more
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The Origin of Plasmaspheric Hiss
Science, 2009Observations by the THEMIS spacecraft are providing a better picture of the electromagnetic environment surrounding Earth.
Ondřej Santolík, Jaroslav Chum
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Disappearance of plasmaspheric hiss following interplanetary shock [PDF]
Geophysical Research Letters, 2015 AbstractPlasmaspheric hiss is one of the important plasma waves controlling radiation belt dynamics. Its spatiotemporal distribution and generation mechanism are presently the object of active research. We here give the first report on the shock‐induced disappearance of plasmaspheric hiss observed by the Van Allen Probes on 8 October 2013. This special
Zhenpeng Su +2 more
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Global Model of Plasmaspheric Hiss From Multiple Satellite Observations [PDF]
Journal of Geophysical Research: Space Physics, 2018 AbstractWe present a global model of plasmaspheric hiss, using data from eight satellites, extending the coverage and improving the statistics of existing models. We use geomagnetic activity dependent templates to separate plasmaspheric hiss from chorus.
Nigel Meredith +2 more
exaly +6 more sources
Statistical properties of low‐frequency plasmaspheric hiss
Journal of Geophysical Research: Space Physics, 2017AbstractPlasmaspheric hiss is an important wave mode for the dynamics of inner terrestrial magnetosphere plasma populations. It acts to scatter high‐energy electrons out of trapped orbits about Earth and into the atmosphere, defining the inner edge of the radiation belts over a range of energies.
Jacob Bortnik +2 more
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Global statistical evidence for chorus as the embryonic source of plasmaspheric hiss [PDF]
Geophysical Research Letters, 2013 The origin of plasmaspheric hiss, the electromagnetic emission responsible for the gap between the inner and outer radiation belts, has been debated for over four decades. Recently, a new theory proposed that chorus, which is excited in the equatorial region outside the plasmapause, can propagate to low altitudes on the dayside and evolve into ...
Nigel Meredith +2 more
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Mid-latitude and plasmaspheric hiss: A review
Planetary and Space Science, 1992Abstract A review of mid-latitude and plasmaspheric hiss-type emissions observed on ground-based stations and in the Earth's magnetosphere is presented. Different approaches to modelling of these emissions are discussed. It is pointed out that mid-latitude hiss emissions are most likely to be generated in the equatorial magnetosphere where the energy
M. Hayakawa, S.S. Sazhin
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