Vorticity in the magnetosphere |
| |
| Authors: | F B Knox M K Andrews |
| |
| Institution: | Physics and Engineering Laboratory, D.S.I.R., Private Bag, Lower Hutt, New Zealand |
| |
| Abstract: | It is shown that Birkeland current and vorticity in the magnetosphere are intimately related, suggesting the importance of taking explicit account of vorticity, particularly velocity shear, when considering magnetospheric motions. An equation of motion for the magnetosphere coupled to the ionosphere is derived. It is suggested that experience with MHD fluids generally might fruitfully be brought to bear on certain problems in the magnetosphere to answer the question, not ‘why a sheet of Birkeland current,’ but rather ‘why a localised velocity shear.’ |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
