The Morphology of Penumbra Filaments Near the Polarity Reversion Lines in Sunspot Regions

The morphology of penumbra filaments near the polarity reversion lines(neutral line)in eight sunspot groups is analysed. The preliminary conclusions are: 1)In the active region with strong delta configuration, the Penumbra filament is parallel more or less to the neutral line (angle of tilt less than 30 degree) which is crossing main spot area with different Polarities. The spots concerned often show some kinds of spiral morphology.2)In the new emergent region or delta region formed by colliding, the spots near neutral line with different polarities often place at the boundary of main spots or far away from them, the penumbra filaments near the neutral line arrange more or less in order and tilt to the neutral line. The spots conerned often show the weak spiral morphology.3)In stable bipolar sunspot groups, regions with scattered penumbra filaments are often appeared between the spots with different polarities and the neutal line that is Passing the regions. The penumbra filament in these regions show the sparse or comb-like morphology and orinte more or less perpendicular to the neutral line. The distance between the spots with different polarities is rather large.