CORONAL HOLES AND THEIR RELATION TO THE BACKGROUND AND LOCAL MAGNETIC-FIELDS

We correlate the evolution of coronal holes with the development of th e large-scale distribution of solar magnetic fields during the years 1 991 and 1992. We see strong ties between the formation of coronal hole s and the latest stages of evolution of complexes of activity, closely related to the regularities in the longitudinal distribution of solar magnetic fields. We also deduce that the evolution of a coronal hole is a global process, depending on the contemporary general stage of so lar activity, in which the equatorial and polar holes are strongly bou nd together. We estimate the interrelations of coronal holes and their magnetic fields with magnetic fields of associated active regions, an d also measure the values of the longitudinal magnetic flux. We have f ound a close relation of coronal holes to older active regions which r esults in the influence of the intensity and topology of the active re gion's magnetic field on the resulting configuration of the lines of f orce of the coronal hole's magnetic field, extending into interplaneta ry space.