Flux ropes 12 In-situ observations Magnetic clouds 12 Magnetic fields 12 Magnetic flux 12 Magnetic flux ropes 12 Solar wind 12 Sun: coronal mass ejections (CMEs) 12 Aspect ratio 8 Astrophysics 8 Boundary layer flow 8 Coronal mass ejection 8 Dynamical evolution 8 Expansion 8 Expansion rate 8 Global quantities 8 Helicities 8 Interplanetary medium 8 Interplanetary spacecraft 8 Magnetic configuration 8 Magnetic energies 8 Magnetic structure 8 Magnetohydrodynamics 8 Planetary surface analysis 8 Solar source 8 Sun 8 Sun: magnetic fields 8 Arbitrary cross section 4 Boundary pressure 4 Boundary shapes 4