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以胶州湾不同时代的海图为依据 ,采用人机交互方式 ,利用数字化板和地学软件 ,对胶州湾海底冲淤态势进行了半定量 (精确到量级 )分析 ,划分了湾内淤积区、侵蚀区 ,并给出了历史变迁趋势。结果表明 ,2 0世纪 80年代以前 ,胶州湾基本处于淤积缩小状态 ,沧口水道和环流中心的海湾中部及沿岸各小湾为淤积区 ,湾口部分和外湾侵蚀 ;2 0世纪 80年代末 90年代初 ,胶州湾反向发展 ,转为侵蚀 ,侵蚀区从湾口向内湾经各水道辐射分布 ,仅侵蚀区之间分布着小片淤积区
Based on the charts of different ages in Jiaozhou Bay, a semi-quantitative (accurate to orderly) analysis of the seafloor scouring and silting situation in Jiaozhou Bay was conducted by means of human-computer interaction and digitalized geotechnical software. Area, and gives the trend of historical changes. The results show that before the 1980s, the Jiaozhou Bay was basically in a siltation and shrinkage situation. The middle bay and the creek coasts of the Cangkou Channel and the circulation center were eroded by siltation, bayou and outback. By the late 1980s, At the beginning of the year, the reverse development of Jiaozhou Bay turned to erosion. The erosion area was radiated and distributed from the mouth of the bay to the inner bay through the watercourses. Only a small area of siltation was distributed among the erosion areas