TY - JOUR
T1 - Comprehensive Observations of Substorm-Enhanced Plasmaspheric Hiss Generation, Propagation, and Dissipation
AU - Liu, Nigang
AU - Su, Zhenpeng
AU - Gao, Zhonglei
AU - Zheng, Huinan
AU - Wang, Yuming
AU - Wang, Shui
AU - Miyoshi, Yoshizumi
AU - Shinohara, Iku
AU - Kasahara, Yoshiya
AU - Tsuchiya, Fuminori
AU - Kumamoto, Atsushi
AU - Matsuda, Shoya
AU - Shoji, Masafumi
AU - Mitani, Takefumi
AU - Takashima, Takeshi
AU - Kazama, Yoichi
AU - Wang, Bo Jhou
AU - Wang, Shiang Yu
AU - Jun, Chae Woo
AU - Chang, Tzu Fang
AU - Tam, Sunny W.Y.
AU - Kasahara, Satoshi
AU - Yokota, Shoichiro
AU - Keika, Kunihiro
AU - Hori, Tomoaki
AU - Matsuoka, Ayako
PY - 2020/1/28
Y1 - 2020/1/28
N2 - Plasmaspheric hiss is an important whistler-mode emission shaping the Van Allen radiation belt environment. How the plasmaspheric hiss waves are generated, propagate, and dissipate remains under intense debate. With the five spacecraft of Van Allen Probes, Exploration of energization and Radiation in Geospace (Arase), and Geostationary Operational Environmental Satellites missions at widely spaced locations, we present here the first comprehensive observations of hiss waves growing from the substorm-injected electron instability, spreading within the plasmasphere, and dissipating over a large spatial scale. During substorms, hot electrons were injected energy-dispersively into the plasmasphere near the dawnside and, probably through a combination of linear and nonlinear cyclotron resonances, generated whistler-mode waves with globally drifting frequencies. These waves were able to propagate from the dawnside to the noonside, with the frequency-drifting feature retained. Approximately 5 hr of magnetic local time away from the source region in the dayside sector, the wave power was dissipated to (Formula presented.) of its original level.
AB - Plasmaspheric hiss is an important whistler-mode emission shaping the Van Allen radiation belt environment. How the plasmaspheric hiss waves are generated, propagate, and dissipate remains under intense debate. With the five spacecraft of Van Allen Probes, Exploration of energization and Radiation in Geospace (Arase), and Geostationary Operational Environmental Satellites missions at widely spaced locations, we present here the first comprehensive observations of hiss waves growing from the substorm-injected electron instability, spreading within the plasmasphere, and dissipating over a large spatial scale. During substorms, hot electrons were injected energy-dispersively into the plasmasphere near the dawnside and, probably through a combination of linear and nonlinear cyclotron resonances, generated whistler-mode waves with globally drifting frequencies. These waves were able to propagate from the dawnside to the noonside, with the frequency-drifting feature retained. Approximately 5 hr of magnetic local time away from the source region in the dayside sector, the wave power was dissipated to (Formula presented.) of its original level.
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U2 - 10.1029/2019GL086040
DO - 10.1029/2019GL086040
M3 - Article
AN - SCOPUS:85079815493
VL - 47
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 2
M1 - e2019GL086040
ER -