from 01.01.1975 to 01.01.2021
Irkutsk, Irkutsk region, Russian Federation
Irkutsk, Russian Federation
Irkutsk, Russian Federation
Department of Space Science and Engineering, National Central University, Taiwan
Moscow, Russian Federation
Moscow, Russian Federation
Irkutsk, Russian Federation
UDK 53 Физика
UDK 55 Геология. Геологические и геофизические науки
We propose a possible classification of the responses of the magnetosphere to the interaction with diamagnetic structures (DS), which form the basis of the slow solar wind. The main determinants of the classification are the value and orientation of the vertical component Bz of the interplanetary magnetic field (IMF) and the solar wind density N. We have identified three types of magnetospheric responses. Type 1 has two subtypes whose main difference is the presence or absence of auroras on the day side of the magnetosphere. Within an hour before DS arrival, Bz has a positive value (up to 12 nT) or fluctuates about 0 in the range from –1 to +1 nT. For both subtypes, the duration of substorm disturbances approximately coincides with the duration of DS, and their intensity does not exceed AE~500 nT. Type 2 is characterized by the fact that before the contact with DS positive IMF Bz (0–10 nT) is recorded for an hour, and at the interface of DS a rapid (≤2 min) change in the orientation of the IMF vertical component from north to south occurs. For type 3, Bz within an hour before the contact with DS is negative (from –10 to 0 nT). We address the problem of DS energy transfer to the magnetosphere.
slow solar wind, diamagnetic structure, classification of magnetospheric responses, substorm disturbance
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