ИСТИНА

It has been shown that diamagnetic structures (DS), which form the basis of the slow quasi-stationary solar wind, are observed at the Earth’s orbit as a sequence of DS of various scales. The analysis of this phenomenon shows that “diamagnetic plasmoids in solar wind”, whose concept was introduced by Karlsson et al., [2015], are identical to DS of small scales. It was found that the impact of a sequence of DS in the slow SW with the Earth’s magnetosphere resulted in an increase in geomagnetic activity. Isolated DSs caused short-term magnetic disturbances whose duration was approximately equal to the DS duration. Hence, a chain of DSs can cause sawtooth substorms (shaped like the teeth of saw). It is noted that interaction of a DS, captured in the slow solar wind under northward orientation of the interplanetary magnetic field, with the magnetosphere can result ion penetration of high density plasma of DS into the dayside magnetosphere.