On the possibility of inferring the solar and interplanetary sector structure from statistics of geomagnetic storms and solar activity |
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| Authors: | Arild Gulbrandsen |
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| Institution: | Department of Physics and Meteorology, Agricultural University of Norway, 1432 Ås-NLH, Norway |
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| Abstract: | Attention is drawn to the great statistical material on geomagnetic storms and solar activity, published mainly before the space age. By analyses of this material in connection with established correlations between geomagnetic activity and the interplanetary sector struc- ture, valuable information might be obtained that would significantly contribute to an increased understanding of solar and interplanetary sector magnetism.As an illustration of this, different analyses of solar-geomagnetic correlations have been considered in relation to the paper by Wilcox and Colburn (1972) on the observed sector struc- ture. Indications are found that (a) the interplanetary and solar sector pattern in the years 1919–1969 consisted of mainly 2 or 4 sectors per solar rotation, and (b) sector boundaries are related to bipolar magnetic regions on the Sun. |
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