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Figure 1: A sub-set of the image as obtained in O V 629 Å on 10 August 1996 in the coronal polar region showing the position of the three data plots given in Fig. 2. The scale on both axes are in arcsec. |
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Figure 2: Non-thermal velocities as derived from the O V 629 Å line calculated for three positions along the raster. Each point was derived by averaging 21 pixels in the X-direction and a running mean of 9 pixels in the Y-direction. Data is only plotted up to pixel 220 along the slit. Also included are plots of the continuum region close to the O V line position. The vertical line shows the position of the continuum limb. |
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Figure 3: A selection of spicules and macro-spicules showing the variation of the N IV 765 Å intensity, non-thermal velocities and line-shift against height above the limb. The PCH was observed on 25 February 1997 between 00:03 and 13:58 UT. The times shown beside the curves are related to the starting time of the observation. Those at t=452 and 735 min are macro-spicules, while the others are spicules. |
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Figure 4: A plot of non-thermal velocities above the limb, taken from a time-region without obvious spicules (dotted line) and the whole observed data averaged (solid line). |
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