Magnetic field topology during July 14-16 2000 (Bastille Day) solar CME event - art. no. 1747

摘要

The July 14-16, 2000 (Bastille Day) event was marked by an extraordinary level of geomagnetic activity following the impact of a large magnetic cloud onto the Earth's magnetosphere at 14:38 on July 15, 2000. The strong increase of the solar wind speed, and density and the large amplitude and variability of B-y and B-z gives rise to dramatic topological changes of unexpected magnitude in the magnetic field of the near-Earth magnetosphere. This event is one of the first real events comprehensively modeled with the adaptive grid MHD simulation scheme BATS-R-US. Magnetic field line integrations were performed with the model output to obtain the three-dimensional magnetic topology and the magnetic mapping between the northern and the southern hemisphere of the Earth. [References: 13]