Tail stretching and different types of substorm onset

VM Mishin, T Saifudinova, A Bazarzhapov, C. T. Russell, W Baumjohann, R Nakamura, M Kubyshkina

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

At times substorms occur in a particular sequence, where a clear growth phase is followed by a first onset at lower latitudes near Phi similar to 63 degrees, and a second one involving all latitudes between 60-70 degrees. In the present paper we present nine such sequences in a superposed epoch analysis. Changes of Psi, the open magnetic flux in the polar cap, using the MIT2 method, indicate that the first onset occurred during an interval of continuous loading of the tail with new open flux merged at the dayside. Hence, this onset did likely involve the reconnection of closed plasma sheet field lines only, while during the second expansion phase, reconnection clearly proceeded from the closed plasma sheet to open lobe field lines. These data are compared with a substorm scenario based on a global tail stretching instability.

Язык оригиналаАнглийский
Название основной публикацииPROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON SUBSTORMS
РедакторыA Wilson
ИздательESA Publication Division
Страницы63-66
Число страниц4
ISBN (печатное издание)92-9092-772-0
СостояниеОпубликовано - 2000
Событие5th International Conference on Substorms - ST PETERSBURG
Продолжительность: 16 мая 200020 мая 2000

Серия публикаций

НазваниеESA SPECIAL PUBLICATIONS
ИздательESA PUBLICATIONS DIVISION C/O ESTEC
Том443
ISSN (печатное издание)0379-6566

конференция

конференция5th International Conference on Substorms
ГородST PETERSBURG
Период16/05/0020/05/00

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