Table 3
Parameters describing horizontal proper motions for various solar features based on the four G-band and Ca ii H time-series with ΔT = 2 h and Δt = 60 s for four time-series shown in Fig. 6.
|
v med | v 10 | v max | σ v | ||
| Feature | Image type | [km s-1] | [km s-1] | [km s-1] | [km s-1] | [km s-1] |
|
|
||||||
| All | G-Band | 0.33 | 0.29 | 0.63 | 1.46 | 0.21 |
| Ca ii H | 0.35 | 0.28 | 0.69 | 2.31 | 0.25 | |
| Granulation | G-Band | 0.35 | 0.31 | 0.65 | 1.43 | 0.21 |
| Ca ii H | 0.36 | 0.30 | 0.71 | 2.31 | 0.25 | |
| Penumbra | G-Band | 0.28 | 0.24 | 0.51 | 1.22 | 0.19 |
| Ca ii H | 0.30 | 0.24 | 0.60 | 1.36 | 0.21 | |
| Umbra | G-Band | 0.20 | 0.19 | 0.33 | 0.60 | 0.10 |
| Ca ii H | 0.30 | 0.23 | 0.66 | 1.19 | 0.23 | |
| Bright Points | G-Band | 0.18 | 0.17 | 0.32 | 0.71 | 0.10 |
| Ca ii H | 0.19 | 0.18 | 0.32 | 0.82 | 0.10 | |
Notes. For computing the characteristic parameters of the penumbral flow field, we neglected the last time interval t2–t3, since by that time the penumbra had decayed and the features detected as penumbra were just artifacts of the thresholding algorithm. The time period t0–t2 was excluded from calculating Ca ii H flow parameters of the umbra, since motions along post-flare loops resulted in high flow speeds.
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