Results 1 to 10 of about 412 (169)

Plasmaspheric Hiss: Coherent and Intense [PDF]

Journal of Geophysical Research: Space Physics, 2018
AbstractIntense ~300‐Hz to 1.0‐kHz plasmaspheric hiss was studied using Polar plasma wave data. It is found that the waves are coherent in all local time sectors with the wave coherency occurring in approximately three‐ to five‐wave cycle packets. The plasmaspheric hiss in the dawn and local noon time sector are found to be substorm (AE*) and storm ...
Bruce T Tsurutani, G S Lakhina, J S Pickett   +2 more
exaly   +5 more sources

Prediction of plasmaspheric hiss spectral classes

Frontiers in Astronomy and Space Sciences, 2022
We present a random forests machine learning model for prediction of plasmaspheric hiss spectral classes from the Van Allen Probes dataset. The random forests model provides accurate prediction of plasmaspheric hiss spectral classes obtained by the self ...
Dmitri Kondrashov, Alexander Y. Drozdov, Daniel Vech, David M. Malaspina, David M. Malaspina   +4 more
doaj   +4 more sources

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 ...
O Santolik, Richard B Horne, Ivana Kolmasova   +2 more
exaly   +5 more sources

Statistical Investigation of the Frequency Dependence of the Chorus Source Mechanism of Plasmaspheric Hiss [PDF]

Geophysical Research Letters, 2021
We use data from eight satellites to statistically examine the role of chorus as a potential source of plasmaspheric hiss. We find that the strong equatorial (|λm| 
Nigel P Meredith, Jacob Bortnik, Richard B Horne   +2 more
exaly   +3 more sources

Origins of plasmaspheric hiss [PDF]

Journal of Geophysical Research, 2006
Plasmaspheric hiss is an electromagnetic wave emission responsible for electron loss from the radiation belts, particularly in the slot region (2 < L < 3). There are two leading theories for the origin of plasmaspheric hiss: in situ amplification of wave turbulence in space and lightning‐generated whistlers.
Nigel P Meredith, Richard B Horne, Mark A Clilverd   +2 more
exaly   +4 more sources

Attenuation of plasmaspheric hiss associated with the enhanced magnetospheric electric field [PDF]

Annales Geophysicae, 2021
We report an attenuation of hiss wave intensity in the duskside of the outer plasmasphere in response to enhanced convection and a substorm based on Van Allen Probe observations.
H. Li, H. Li, W. Li, Q. Ma, Q. Ma, Y. Nishimura, Z. Yuan, A. J. Boyd, A. J. Boyd, X. Shen, R. Tang, X. Deng   +11 more
doaj   +6 more sources

Internal source of plasmaspheric hiss on Earth

地球与行星物理论评, 2022
Plasmasphere is an upward extension of the ionosphere at low and middle latitudes along the closed magnetic field lines rooted in the Earth, where the trapped whistler-mode waves in the frequency range from tens to thousands of Hertz are named as ...
Zhenpeng Su, Nigang Liu, Zhaoguo He, Zhiyong Wu   +3 more
doaj   +2 more sources

Fine structure of plasmaspheric hiss [PDF]

Journal of Geophysical Research: Space Physics, 2014
AbstractPlasmaspheric hiss has been widely regarded as a broadband, structureless, incoherent emission. In this study, by examining burst‐mode vector waveform data from the Electric and Magnetic Field Instrument Suite and Integrated Science instrument on the Van Allen Probes mission, we show that plasmaspheric hiss is a coherent emission with complex ...
Danny Summers, Yoshiharu Omura, S Nakamura   +2 more
exaly   +2 more sources

Empirically Estimated Electron Lifetimes in the Earth's Radiation Belts: Comparison With Theory [PDF]

Geophysical Research Letters, 2020
We compute quasilinear diffusion rates due to pitch angle scattering by various mechanisms in the Earth's electron radiation belts. The calculated theoretical lifetimes are compared with observed decay rates, and we find excellent qualitative agreement ...
S. G. Claudepierre, Q. Ma, J. Bortnik, T. P. O'Brien, J. F. Fennell, J. B. Blake   +5 more
doaj   +2 more sources

Abrupt Disappearance of Plasmaspheric Hiss Inside the Magnetic Dip

Geophysical Research Letters
Plasmaspheric hiss plays an important role in radiation belt electron dynamics, and its excitation and propagation have long attracted attention. During a substorm, Van Allen Probe B observed the disappearance of plasmaspheric hiss at the magnetic dip ...
Yan Zhuang, Chao Yue, Shan Wang, Haimeng Li, Sibo Xu, Xu‐Zhi Zhou, Qiu‐Gang Zong   +6 more
doaj   +2 more sources