Persistence of Auroral Electron Flux Events from DMSP/F9 Electron Measurements

Abstract

The persistence of auroral electron activity is examined and correlated to the geomagnetic activity, which is measured by the Kp index. To study this correlation the superposed epoch analysis technique was implemented. Epoch zero is the time at which Kp values persisted above a specified threshold value for a specified duration. It was found that a high correlation between enhanced Kp and the number of bright arcs can be achieved for a limited time. The waiting time to increase the chance of observing bright auroral arcs after enhanced Kp values are observed should be between 3 to 6 hours. Further, the substantial increase in the number of observations of intense events as a result of enhanced Kp lingers a maximum of 36 to 48 hours. After this time period, this number drops to the average number of random observations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1992
Accession Number
ADA251241

Entities

People

  • K. H. Bounar
  • W. J. Mcneil

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Artificial Satellites
  • Data Analysis
  • Databases
  • Demographic Cohorts
  • Electron Energy
  • Electron Flux
  • Electrons
  • Energy
  • Measurement
  • Observation
  • Peak Values
  • Plastic Explosives
  • Probability
  • Probability Distributions
  • Two Dimensional

Readers

  • Mathematics or Statistics
  • Space/Atmospheric Physics.

Technology Areas

  • Microelectronics