Formation of magnetic cloud that is a relatively strong and smooth magnetic fields with a low plasma temperature (∼ low beta), usually associates with energetic phenomena, e.g. Coronal Mass Ejection (CME) and flare. On the other hand, those energetic events could generate shock wave of solar energetic particles (SEP) and propagate in the inter-planetary medium to disturb the Earth environment. Geomagnetic storm is a severe geomagnetic disturbance due solar source phenomena. The manifestations of storms are strong deviations in the Earth’s magnetic field from the quiet conditions that extend over wide geographic areas: from high-latitude to mid-latitude and equatorial regions. Large geomagnetic storms can cause deleterious effects on space- and ground-based installations. We study magnetic cloud in connection to shock wave of SEP and geomagnetic storms on the November 20, 2003 and December 14, 2006 events. Magnetic clouds have already modeled. We identified magnetic cloud from the variation of magnetic field obtain from MAG instrument onboard ACE satellite with one hour resolution data. The steep fluctuations as a shock wave were computed and divided into magnetic field, proton speed and proton density. We study for each of their arrival time. We confirm that southward Bz component is dominant during magnetic cloud event. We also observed fine structures of a shock wave. These results may predict better the impacts of space weather to the space instruments and lower Earth’s atmosphere. © 2010 American Institute of Physics.

CME,Geomagnetic storm,Magnetic cloud,Shock wave,Solar flare

https://doi.org/10.1063/1.3537874