Analysis of Solar Flare in Relation to the Magnetic Fields on Jan 14 1989

The data of magnetic fields measured at PeI λ5324A and Hβ4864A were obtained during the 2B two-ribbon flare process on Jan 14,1989. The one of intial bright points of the flare was lo cated in the inversion line of the concellation region, and the others were located near the H11=0 line where the shear of longitudinal magnetic fields was very strong. We found that the gradient of longitudinal magnetic fields near the H11=0 obviously decreased and the shear region had relaxed after the solar flare. The umbral flare was closely related to the changes of chromospheric magnetic field.