Accession Number : ADA194360

Title :   A Time Series Analysis of Energetic Electron Fluxes (1.2 - 16 MeV) at Geosynchronous Altitude.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Halpin, Michael P

PDF Url : ADA194360

Report Date : Dec 1986

Pagination or Media Count : 244

Abstract : This project used a Box and Jenkins time series analysis of energetic electron fluxes measured at geosynchronous orbit in an effort to derive prediction models for the flux in each of five energy channels. In addition, the technique of transfer function modeling described by Box and Jenkins was used in an attempt to derive input-output relationships between the flux channels (viewed as the output) and the solar wind speed or interplanetary magnetic field (IMF) north-south component, Bz, (viewed as the input). The transfer function modeling was done in order to investigate the theoretical dynamic relationship which is believed to exist between the solar wind, the IMB Bz, and the energetic electron flux in the magnetosphere. The models derived from the transfer function techniques employed were also intended to be used in the prediction of flux values. The results from this study indicate that the energetic electron flux changes in the various channels are dependent on more than simply the solar wind speed or the IMF Bz.

Descriptors :   *ELECTRON FLUX, *TIME SERIES ANALYSIS, *HIGH ORBIT TRAJECTORIES, *SOLAR WIND, ALTITUDE, CHANNELS, DYNAMICS, ENERGETIC PROPERTIES, ENERGY, FLUX(RATE), INTERPLANETARY SPACE, MAGNETIC FIELDS, MAGNETOSPHERE, NORTH(DIRECTION), ORBITS, SOLAR WIND, SOUTH(DIRECTION), SYNCHRONISM, SYNCHRONOUS SATELLITES, TRANSFER FUNCTIONS, VELOCITY, THESES, MATHEMATICAL PREDICTION

Subject Categories : Astronautics

Distribution Statement : APPROVED FOR PUBLIC RELEASE