A superposed epoch study of SuperDARN convection observations during substorms

W. A. Bristow, Poul Jensen

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

[1] Case studies of flow patterns during substorms have revealed characteristic patterns in the period leading to expansion onset. Velocities in the premidnight region have been observed to become strongly sheared, and the premidnight convection reversal has been observed to extend across the midnight meridian. At expansion onset, the shear decreases and flow at midnight becomes meridional, out of the polar cap. The study presented here superposes flow patterns from 10 substorm intervals to determine the average flow patterns. The study confirms the findings of the case studies and extends them to additional local time sectors. In addition, changes to the flow pattern after expansion onset are examined.

Original languageEnglish (US)
Article numberA06232
JournalJournal of Geophysical Research: Space Physics
Volume112
Issue number6
DOIs
StatePublished - Jun 1 2007

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Fingerprint Dive into the research topics of 'A superposed epoch study of SuperDARN convection observations during substorms'. Together they form a unique fingerprint.

Cite this