On the Origin of Ionospheric Hiss: A Conjugate Observation
On the Origin of Ionospheric Hiss: A Conjugate Observation
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关于电离层嘶声的起源:共轭观测
DOI:
10.1002/2017ja024803
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发表时间:
2017-11
期刊:
影响因子:
--
通讯作者:
Chen lunjin
中科院分区:
文献类型:
--
作者:
Zeren Zhima;Chen lunjin
We present a conjugate observation on whistler mode electromagnetic hiss from the low Earth orbit satellite Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions (DEMETER) and the high-altitude elliptical orbit spacecraft Time History of Events and Macroscale Interactions during Substorms (THEMIS). The conjugate observation was performed at 14:51:10 to 15:12:00 UT on 15 June 2010, when DEMETER was flying across the L shell region from ~1.39 to 2.80 at an altitude of ~660 km; meanwhile, THEMIS probes were passing through the L shell region from ~1.64 to 1.91 at altitudes from ~1.6 to 2.0 RE. The conjugated observations demonstrate similar time-frequency structures between the ionospheric hiss (~350 to 800 Hz) captured by DEMETER and the plasmaspheric hiss (~350 to 900 Hz) recorded by THEMIS probes, including similar peak frequencies (~500 to 600 Hz), similar lower cutoff frequencies (~350 to 400 Hz), and upper cutoff frequencies (~730 to 800 Hz). The wave vector analyses show that the ionospheric hiss propagates obliquely downward to the Earth and slightly equatorward with right-handed polarization, suggesting that its source comes from higher altitudes. Ray tracing simulations with the constraint of observations verify that the connection between ionospheric and plasmaspheric hiss is physically possible through wave propagation. This study provides direct observational evidence to support the mechanism that high-altitude plasmaspheric hiss is responsible for the generation of low-altitude ionospheric hiss.
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影响因子:
5.2
作者:
Chen Lunjin;Santolik Ondrej;Hajos Mychajlo;Zheng Liheng;Zhima Zeren;Heelis Roderick;Hanzelka Miroslav;Horne Richard B;Parrot Michel
通讯作者:
Parrot Michel
影响因子:
--
作者:
Lunjin Chen;J. Bortnik;Wen Li;R. Thorne;R. Horne
通讯作者:
Lunjin Chen;J. Bortnik;Wen Li;R. Thorne;R. Horne
影响因子:
--
作者:
N. Meredith;R. Horne;M. Clilverd;D. Horsfall;R. Thorne;R. R. Anderson-R.
通讯作者:
N. Meredith;R. Horne;M. Clilverd;D. Horsfall;R. Thorne;R. R. Anderson-R.
影响因子:
--
作者:
H.S. Fu;J. Tu;J. B. Cao
通讯作者:
J. B. Cao
DOI:
10.1002/2013ja019557
发表时间:
2014-03
期刊:
Journal of Geophysical Research: Space Physics
影响因子:
--
作者:
M. Parrot;F. Němec;O. Santolík
通讯作者:
M. Parrot;F. Němec;O. Santolík