Based on re - calculating to the portable gravimetri c data in guangdong area from 1988 to 1999 , the evolution tendencies of the gravi ty field in the eastern and western regions of guangdong and the pearl river del ta area have been analyzed . the relation between the gravitational field and the seismicity in coast area of south china has been discussed , and the earthquake p recursory information for the time - space and strength changes of the gravity fie l d in guangdong area have been picked to provide the criterions of the gravity an omaly before earthquakes in this area 通过对广东地区1988 1999年流动重力资料的重新整理计算，对粤东、粤西和珠江三角洲地区重力场演变趋势做了分析研究，探讨其与华南沿海地区地震活动的关系，并提出广东地区重力场时、空、强变化的地震前兆信息，为该地区提供震前重力场异常判别依据。
