Figure 3. Dynamics of the solar-ecliptic Vx component of the solar wind according to the measurements on board the Wind satellite (courtesy of K. Ogilvie and GDA Web team) in the sequence of CR 1920-CR 1923 (from top to bottom). HCS, SB, SI, Sf, R I, and R II are the sector and subsector boundaries, flow surface, forward shock wave, and front and rear boundaries of the magnetic cloud, respectively.