ELF hiss associated with plasma density enhancements in the outer magnetosphere

Journal Article · Sat May 01 04:00:00 EDT 1976 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA081i013p02267· OSTI ID:7270137

Chan, K; Holzer, R E

The low-frequency, narrow hiss bands associated with plasma density enhancements in the magnetosphere near and beyond L=4 have been studied with the search coil magnetometer and ion mass spectrometer data from Ogo 5. ELF hiss is found to accompany most of the detached plasmas in the outer magnetosphere and to be sharply limited by the steep ion density gradient at their boundary. The observations indicate that the hiss originates in and is ducted by the plasma density enhancements. In a particularly favorable case after an interval of low AE and Dst indices a series of enhanced plasma density peaks were observed between LL=4 and L=6 in the afternoon local time sector. In this case it was possible to develop an empirical relation between hiss amplitude, plasma density, and L by using in situ simultaneous measurements. (AIP)

• Research Organization: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, California 90024
• OSTI ID: 7270137
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 81:13; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640203* -- Atmospheric Physics-- Magnetospheric Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
INSTABILITY
MAGNETOSPHERE
NOISE
OGO SATELLITES
PLASMA DENSITY
PLASMA INSTABILITY
PLASMA WAVES
RADIATIONS
RADIO NOISE
RADIOWAVE RADIATION
SATELLITES
VARIATIONS
WHISTLERS