loading page

Ground-based Auroral Hiss Recorded at Northern Finland with Reference to Magnetic Substorms
  • +3
  • Jyrki Manninen,
  • Natalia Kleimenova,
  • Alexander Kozlovsky,
  • Yury V. Fedorenko,
  • Liudmila Ivanovna Gromova,
  • Tauno Turunen
Jyrki Manninen
Sodankyla Geophysical Observatory

Corresponding Author:jyrki.manninen@oulu.fi

Author Profile
Natalia Kleimenova
Institute of the Earth's Physics
Author Profile
Alexander Kozlovsky
Sodankyla Geophysical Observatory
Author Profile
Yury V. Fedorenko
Polar Geophysical Institute
Author Profile
Liudmila Ivanovna Gromova
Puskov institute of terrestrial Magnetism, Ionosphere and Radio Wave Propagation
Author Profile
Tauno Turunen
Sodankylä Geophysical Observatory
Author Profile


VLF auroral hiss at Kannuslehto (KAN), Finland has been analyzed with a reference to progress of 98 isolated magnetic substorms. During 11 winter months of 2015-2018, 91 of them were accompanied by the auroral hiss during the substorm growth phase. No auroral hiss was recorded during the expansion and recovery phases. We found auroral hiss was observed under rising polar cap PC index showing an increasing input of the solar wind energy into the magnetosphere during the substorm growth phase. We also found that KAN was mapped to the vicinity of enhanced Field Aligned Currents (FACs) during the auroral hiss occurrence. For the first time, it was established that the auroral VLF hiss generation in the equatorial part of the auroral oval (KAN location) is a typical signature of a substorm phase.
28 Mar 2020Published in Geophysical Research Letters volume 47 issue 6. 10.1029/2019GL086285