Blar i Bergen Open Research Archive på forfatter "Michell, Robert"
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On the Persistent Shape and Coherence of Pulsating Auroral Patches
Humberset, Beate Krøvel; Gjerløv, Jesper; Mann, Ian R.; Michell, Robert; Samara, Marilla (Peer reviewed; Journal article, 2018-05)The pulsating aurora covers a broad range of fluctuating shapes that are poorly characterized. The purpose of this paper is therefore to provide objective and quantitative measures of the extent to which pulsating auroral ... -
Scale size-dependent characteristics of the nightside aurora
Humberset, Beate Krøvel; Gjerløv, Jesper; Samara, Marilla; Michell, Robert (Peer reviewed; Journal article, 2017-02)We have determined the spatiotemporal characteristics of the magnetosphere-ionosphere (M-I) coupling using auroral imaging. Observations at fixed positions for an extended period of time are provided by a ground-based ... -
Temporal characteristics and energy deposition of pulsating auroral patches
Humberset, Beate Krøvel; Gjerløv, Jesper; Samara, Marilla; Michell, Robert; Mann, Ian R. (Peer reviewed; Journal article, 2016-07-23)We present a careful statistical analysis of pulsating aurora (PA) using all-sky green line (557.7 nm) images obtained at 3.3 Hz. Six well-defined individual PA patches are identified and extracted using a contouring ...