Integral Probability of Auroral Electron Flux Events from SSJ/4 DMSP F9 Electron Measurements
Abstract
A study has been completed to determine the probability of observing different levels of auroral electron precipitation both within fixed spatial elements in magnetic local time and corrected geomagnetic latitude, and within spatial elements when the magnetic local time is fixed but the latitude range can be varied. The auroral electron precipitation probability is defined for a series of thresholds in electron average energy and electron energy flux as a function of geomagnetic activity. The study provides the capability to determine the probability of observation of an auroral electron precipitation event for any specified threshold in average energy, energy flux, and level of geomagnetic activity for any location in the auroral region or for any line of sight through the auroral region. The input for the study Is one year of data from the SSJ/4 electron and proton spectrometer flown on the F9 satellite of the Defense Meteorological Satellite Program (DMSP) comprising approximately 10, 141 hemispheric passes through the auroral region. The binning technique used to determine these probabilities is presented and some results are discussed. The operation of the software package to display the probability results is described.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 18, 1992
- Accession Number
- ADA273875
Entities
People
- David A. Hardy
- Khaled H. Bounar
Organizations
- Phillips Laboratory