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Relationships between field-aligned currents, electric fields and particle precipitation as observed by dynamics Explorer-2The relationships between field-aligned currents, electric fields, and particle fluxes are determined using observations from the polar orbiting low-altitude satellite Dynamics Explorer-2. It is shown that the north-south electric field and the east-west magnetic field components are usually highly correlated in the field-aligned current regions. This proportionality observationally proves that the field-aligned current equals the divergence of the height-integrated ionospheric Pedersen current in the meridional plane to a high degree of approximation. As a general rule, in the evening sector the upward field-aligned currents flow in the boundary plasma sheet region and the downward currents flow in the central plasma sheet region. The current densities determined independently from the plasma and magnetic field measurements are compared. Although the current densities deduced from the two methods are in general agreement, the degree and extent of the agreement vary in individual cases.
Document ID
19830019248
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Sugiura, M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Iyemori, T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hoffman, R. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Maynard, N. C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Burch, J. L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Winningham, J. D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 4, 2013
Publication Date
May 1, 1983
Subject Category
Geophysics
Report/Patent Number
NASA-TM-85025
NAS 1.15:85025
Accession Number
83N27519
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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