Highlights Present the dependence of the time delay of ionospheric storms in Taoyuan, Taiwan. All of the pre-storm response events occurred during 15–20 LT. The events with long time delay might belong to ionospheric Q-disturbances.

    Abstract We have studied the time delay of ionospheric storms to geomagnetic storms at a low latitude station Taoyuan (25.02°N, 121.21°E), Taiwan using the Dst and TEC data during 126 geomagnetic storms from the year 2002 to 2014. In addition to the known local time dependence of the time delay, the statistics show that the time delay has significant seasonal characteristics, which can be explained within the framework of the seasonal characteristics of the ionospheric TEC. The data also show that there is no correlation between the time delay and the intensity of magnetic storms. As for the solar activity dependence of the time delay, the results show that there is no relationship between the time delay of positive storms and the solar activity, whereas the time delay of negative storms has weakly negative dependence on the solar activity, with correlation coefficient −0.41. Especially, there are two kinds of extreme events: pre-storm response events and long-time delay events. All of the pre-storm response events occurred during 15–20 LT, manifesting the Equator Ionospheric Anomaly (EIA) feature at Taoyuan. Moreover, the common features of the pre-storm response events suggest the storm sudden commencement (SSC) and weak geomagnetic disturbance before the main phase onset (MPO) of magnetic storms are two main possible causes of the pre-storm response events. By analyzing the geomagnetic indices during the events with long-time delay, we infer that this kind of events may not be caused by magnetic storms, and they might belong to ionospheric Q-disturbances.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Statistical study of the time delay of ionospheric TEC storms to geomagnetic storms in Taoyuan, Taiwan


    Beteiligte:
    Zhang, Yuqiang (Autor:in) / Wu, Zhensen (Autor:in) / Feng, Jian (Autor:in) / Xu, Tong (Autor:in) / Deng, Zhongxin (Autor:in) / Zhen, Weimin (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2019-09-08


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Effects of geomagnetic storms on the bottomside ionospheric F region

    Buresova, D. / International Council of Scientific Unions | British Library Conference Proceedings | 2005




    Behavior of the ionospheric F region prior to geomagnetic storms

    Danilov, A.D. / Konstantinova, A.V. | Elsevier | 2019