【摘要】 近三十余年来,由于九龙江入海泥沙成倍增加和厦门东渡湾多条栏湾大坝的修建导致了河口湾沉积环境的明显改变,首先是沉积速率的加快,应用Klein-510型浅地层剖面仪进行了不同沉积层声学效应的探测试验取得新的认识,详细分析了图象清晰、连续性完好的沉积界面特征,并与钻孔岩蕊逐层地进行对比,证明了海湾沉积环境的变化能很好地反映在沉积界面上,与过去的其他研究方法比较,本区近30多年来的沉积平均速率:内湾区大部分为6～7cm/a,河口湾前沿可达到8～10cm/a。更多还原

【Abstract】 In the past near thirty years ,the sedimentary .environment in Xiamen Bay has been changed greatly,Especially the rate of sedimentation has been accelerated due to the doubling of sediment discharge of Jiulongjian River and the building of several cross-bay darns in the Bay. Research experiments have been conducted on the acoustic effects of different sediment layer with Klein-510 type subbottom profiler. Clear and continuing sediment layer boundary has been recorded and compared with drilling tores to reveal the changes of sdimentary environments. With this new method,the average of deposit has been determined to be 6-7 cm/a in the most part of the inner bay and 8-10 cm/a in the front of the Estuary in the past near thirty years.更多还原