Zonal structure and meridional drift of large-scale solar magnetic fields

摘要: Digitized synoptic charts of photospheric magnetic fields were analyzed for the past 4 incomplete solar activity cycles (1969–2000). The zonal structure and cyclic evolution large-scale investigated using calculated values radial Br, |Br|, meridional Bθ, |Bθ|, azimuthal Bφ, |Bφ| components field averaged over a Carrington rotation (CR). time–latitude diagrams all 6 parameters their correlation analysis clearly reveal two types poleward drift with characteristic times travel from equator to poles equal ∼16–18 ∼2–3 years. A conclusion is made that we observe different processes reorganization in Sun are related generation subsequent redistribution process emergence region surface. Redistribution supposed be caused by some external forces (presumably, sub-surface plasma flows convection zone).