Results 1 to 10 of about 173 (148)

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
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Statistical Investigation of the Frequency Dependence of the Chorus Source Mechanism of Plasmaspheric Hiss

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, Wen Li, Xiao‐Chen Shen   +4 more
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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
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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
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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
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Identification of Locally Generated Plasmaspheric Hiss

Geophysical Research Letters
In this study, we statistically analyze the wave properties of plasmaspheric hiss using data from the Van Allen Probes. The magnetic power spectral densities of hiss waves exhibit dependence on magnetic local time, geomagnetic activity, and the L‐shell ...
Mingyue Lu, Zhijie Qin, Hui Zhu, Yingying Zhao, Huicong Chen   +4 more
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Evolution of dayside chorus into nightside plasmaspheric hiss

Frontiers in Astronomy and Space Sciences
Plasmaspheric hiss is an incoherent, broadband, whistler-mode emission that is found primarily in the Earth’s dense plasmasphere and is believed to be largely responsible for the formation of the slot region between the inner and outer radiation belts ...
Jacob Bortnik, Lunjin Chen, Xiao-Jia Zhang, Xiao-Jia Zhang, Nigel P. Meredith   +4 more
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Exohiss wave enhancement following substorm electron injection in the dayside magnetosphere [PDF]

Earth and Planetary Physics, 2018
Exohiss is a low-frequency structureless whistler-mode emission potentially contributing to the precipitation loss of radiation belt electrons outside the plasmasphere.
ZhongLei Gao, ZhenPeng Su, FuLiang Xiao, HuiNan Zheng, YuMing Wang, Shui Wang, H. E. Spence, G. D. Reeves, D. N. Baker, J. B. Blake, H. O. Funsten   +10 more
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Long Lifetime Hiss Rays in the Disturbed Plasmasphere

Geophysical Research Letters
Plasmaspheric hiss waves are important to shape the Earth’s electron radiation belt. These waves are commonly envisioned to have a long lifetime which allows them to permeate the global plasmasphere from a spatially restricted source.
Zhiyong Wu, Zhenpeng Su, Huinan Zheng, Yuming Wang, Yoshizumi Miyoshi, Iku Shinohara, Ayako Matsuoka, Yoshiya Kasahara, Fuminori Tsuchiya, Atsushi Kumamoto, Shoya Matsuda, Yasumasa Kasaba, Mariko Teramoto, Tomoaki Hori   +13 more
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A Generation Mechanism of Banded Plasmaspheric Hiss

Geophysical Research Letters
As a unique structure of plasmaspheric hiss emissions, banded hiss waves generally consist of an upper band above ∼200 Hz, a lower band below ∼100 Hz and a power gap in between. However, the generation mechanism of banded hiss remains unclear.
Junhu Dong, Binbin Ni, Zheng Xiang, Zhiyong Wu   +3 more
doaj   +2 more sources