DOI

  • E. V. Panov
  • W. Baumjohann
  • R. Nakamura
  • J. M. Weygand
  • B. L. Giles
  • C. T. Russell
  • G. Reeves
  • M. V. Kubyshkina

We employ Magnetospheric Multiscale, Geostationary Operational Environmental and Los Alamos National Laboratory satellites, as well as the ground magnetometer networks over Greenland and North America to study a substorm on 9 August 2016 between 9 and 10 UT. We found that during the substorm two earthward flows, whose dipolarization-injection fronts exceeded 6.5 and 4 Earth's radii (RE) in YGSM, impinged and rebounded from Earth's dipolar field lines at L=6–7 downtail, where L is the McIlwain number. The impingements and rebounds ended with a substorm current system of downward R1 and upward R2 currents which grew to azimuthally cover the whole North American continent. At the fronts, regions of enhanced negative j·E were formed and peaked toward the end of the impingements. These regions appeared to be conjugate with eastward moving aurora (along the growth phase arc and together with eastward drifting energetic electrons at geosynchronous equatorial orbit), which manifests ionospheric Ohmic losses.

Original languageEnglish
Pages (from-to)4064-4082
Number of pages19
JournalJournal of Geophysical Research: Space Physics
Volume124
Issue number6
Early online date1 Jun 2019
DOIs
StatePublished - Jun 2019

    Scopus subject areas

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

    Research areas

  • dipolarization, injection, ionosphere, Joule heating, M-I coupling, substorm, EARTHS MAGNETOSPHERE, SPACECRAFT OBSERVATION, PARTICLE INJECTIONS, CURRENT DISRUPTION, ION FLOWS, SUBSTORM CURRENT WEDGE, EXPANSION, OSCILLATORY FLOW BRAKING, PLASMA SHEET, MAGNETOTAIL

ID: 43183276