A quantitative analysis has been made to estimate the horizontal variation of physical parameters in a loop type active prominence by analyzing Call H&K and Hε… Hε… spectra taken from such an active prominence (appeared on May 23, 1981 with position angle 251 degree) with Littrow type spectrograph attached to 25cm coronagraph at Norikura Coronal Station of National Astronomical Observatory of Japan. The spectral resolution is 1.12A/mm and the spatial resolution is 25'/mm for Call H&K lines. The present study shows that the turbulent velocity ranges from 10km/s to 20 km/s in the loop prominence, which are in good agreement with those of Hirayama (1989). It is also found that the temperature of the loop prominence is higher than that of quiescent prominences(\~8,000K) (\~8,000K) by about 4,000 K, whose temperature deviation seems very high.

• 박영득(천문대 보현산천문대) | PARK YOUNG DEUK (Bohyunsan Optical Astronomy Observatory, Korea Astronomy Observatory)
• 윤홍식(서울대학교 천문학과) | YUN HONG SIK (Department of Astronomy, Seoul National University)
• 문용재(천문대 보현산천문대) | MOON YONG-JAE (Bohyunsan Optical Astronomy Observatory, Korea Astronomy Observatory)