Abstract:We analyzed the vertical boundaries of a long-lived coronal hole and their variation in the solar atmosphere with time. The investigations are based on ground and space observations. Analyze of the boundaries of CH on the different heights showed next: the boundaries of the GCH, determined from the observations, are very close both in the E-W direction in the N-S direction. The boundaries of the GCH, determined from the magnetic field lines for the photosphere, are in good agreement at the moments of the begin… Show more
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