Accession Number : AD0420769

Title :   THE MOTION OF CA+ IN THE CHROMOSPHERE AND THE CONNECTION OF MOTION WITH MAGNETIC FIELDS,

Corporate Author : SACRAMENTO PEAK OBSERVATORY SUNSPOT N MEX

Personal Author(s) : Stepanov,V. E. ; Dunn,Alice B.

Report Date : 1943

Pagination or Media Count : 19

Abstract : In the solar chromosphere there are extensive regions of steady ascent and descent of gas. The size of these regions reaches 200 000 km. The general motion, apparently, is motion of largescale turbulent elements with characteristic size of 5000-20 000 km, and with average duration of existence equal to 7 hours. The average total velocity of descending and ascending elements is 3.6 km/sec. In undisturbed regions of the chromosphere above weak magnetic fields in the photosphere (H < 7.5 gs) the total mass of the descending gas is equal to the mass of the ascending gas. The average velocity of ascent is equal to -0.96 km/sec, and descent +l.25 km/sec. The area in which ascent of gas occurs is 56% of the total area of the undisturbed regions. In flocculi the area in which the descent of gas occurs is 79% of the total area of flocculi. The velocity of ascent equals the velocity of ascent in undisturbed regions, and the velocity of descent is equal to +l.7 km/sec. In portions where especially bright flocculi are situated, just as in all floccular areas, there occurs a predominance of descent of gas with velocity of +2.3 km/sec, and an average velocity of ascent -l.3 km/sec. Thus as floccular brightness increases so does the velocity of both ascent and descent of gas. (Author)

Descriptors :   (*SOLAR ATMOSPHERE, MAGNETIC FIELDS), (*SOLAR FLARES, INTENSITY), MOTION, VELOCITY, SOLAR DISTURBANCES, GASES, TABLES(DATA), CALCIUM, BRIGHTNESS, TRAJECTORIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE