NDLI: Spherical harmonic representation of the main geomagnetic field for world charting and investigations of some fundamental problems of physics and geophysics

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Spherical harmonic representation of the main geomagnetic field for world charting and investigations of some fundamental problems of physics and geophysics

Content Provider	NASA Technical Reports Server (NTRS)
Author	Barraclough, D. R. Lowes, F. J. Hide, R. Malin, S. R. C. Leaton, B. R.
Copyright Year	1982
Description	Progress in the harmonic analysis of MAGSAT data is reported. Single-day data sets were subdivided into information on the sunrise side of the Earth and information on the sunset side of the Earth. Data for the main and external fields each demonstrate a clear and consistent systematic difference between the sets of data which was determined to be, due to ionospheric currents which differ from the sunset to the sunrise terminator. A toroidal field was analyzed for and determined to be an apparent toroidal field resulting from electric currents concentrated in the two terminators. Progressive elimination of auroral zone data demonstrates that the information presented does not arise from complications due to Birkeland currents.
File Size	193021
Page Count	4
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19820024936
Archival Resource Key	ark:/13960/t7pp3xf6v
Language	English
Publisher Date	1982-06-01
Access Restriction	Open
Subject Keyword	Earth Resources And Remote Sensing Geomagnetism Auroral Zones Earth Resources Program Harmonic Analysis Data Smoothing Sunset Birkeland Currents Thematic Mapping Toroidal Discharge Ionospheric Currents Sunrise Terminator Lines Magsat Satellites Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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