In the autumn of 2021, a multichannel imaging photometer of the Pulsating Aurora Imaging Photometer System was installed at the Verkhnetulomsky Observatory. During the first season of operation (2021/2022), measurements were made over the course of 163 nights in three modes of temporal resolution: 2.5 μs, 320 μs, and 41 ms. The high temporal resolution makes it possible to investigate the fine temporal structure of the emission, which are short (less than 1 s) bursts of UV radiation, so-called “microbursts” that can be single or follow in series. The long-term series of microbursts registered on November 27–29, 2021, were analyzed. It is shown that the series of bursts have a complex temporal structure, individual bursts have several peaks with intervals of 100–400 ms, the intervals between bursts are of the order of 1 s, and they appear in packs lasting from several seconds to minutes. The series appear both in quiet geomagnetic conditions and during substorms; the frequency and amplitude of bursts in the second case are significantly larger.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    UV Microbursts in the Auroral Zone Measured by a Multichannel Imaging Photometer


    Additional title:

    Cosmic Res


    Contributors:

    Published in:

    Cosmic Research ; 62 , 4 ; 311-317


    Publication date :

    2024-08-01


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Microbursts of the UV atmospheric emission in the auroral zone

    Klimov, P.A. / Nikolaeva, V.D. / Saraev, R.E. et al. | Elsevier | 2024


    Microbursts

    Online Contents | 1996


    LIDAR studies on microbursts

    Aurenche, Y. / Boulay, J. L. | NTRS | 1991


    Laboratory modeling of microbursts

    Fernando, H. / Robles, A. / Peeters, P. et al. | AIAA | 1996


    Tomographic Inversion of Auroral Camera or Photometer Observations

    Nygren, T. / Kaila, K. / Markkanen, M. et al. | British Library Conference Proceedings | 1997