Browsing Bergen Open Research Archive by Author "Knudsen, David J."

Now showing items 1-3 of 3

    • Dayside Field-Aligned Current Impacts on Ionospheric Irregularities 

      Follestad, Anna Kristine Fæhn; Herlingshaw, Katie; Ghadjari, Hossein; Knudsen, David J.; McWilliams, Kathryn A.; Moen, Jøran Idar; Spicher, Andres; Wu, Jingjing; Oksavik, Kjellmar (Journal article; Peer reviewed, 2020)
      Global Navigation Satellite Systems (GNSS) are subject to disturbances caused by plasma irregularities in the ionosphere. Studies have suggested that in addition to the gradient drift and Kelvin‐Helmholtz instabilities, ...

    • Does high-latitude ionospheric electrodynamics exhibit hemispheric mirror symmetry? 

      Hatch, Spencer Mark; Vanhamäki, Heikki; Laundal, Karl Magnus; Reistad, Jone Peter; Burchill, Jonathan K.; Lomidze, Levan; Knudsen, David J.; Madelaire, Michael; Tesfaw, Habtamu (Journal article; Peer reviewed, 2024)
      Ionospheric electrodynamics is a problem of mechanical stress balance mediated by electromagnetic forces. Joule heating (the total rate of frictional heating of thermospheric gases and ionospheric plasma) and ionospheric ...

    • Swarm in situ observations of F region polar cap patches created by cusp precipitation 

      Goodwin, Lindsay; Iserhienrhien, Blessing; Miles, David M.; Patra, Swadesh; van der Meeren, Christer; Buchert, Stephan C.; Burchill, Jonathan; Clausen, Lasse Boy Novock; Knudsen, David J.; McWilliams, Kathryn A.; Moen, Jøran Idar (Peer reviewed; Journal article, 2015-02-26)
      High-resolution in situ measurements from the three Swarm spacecraft, in a string-of-pearls configuration, provide new insights about the combined role of flow channel events and particle impact ionization in creating F ...