基于遥感影像的北部湾金滩变化研究

摘要

以北部湾金滩砂质海滩为研究区域,以2000～2008年的28景Landsat-ETM+为数据源,通过多时相遥感影像水边线高程技术确定地形坡度,计算出金滩海滩高程变化、淤涨速度,得出坡度为2.3％,海滩同高程水边线向海方向推移速度为2.7 m/a,高程变化为+0.068 m/a.通过本研究,将从整体上把握北部湾金滩的变化特征,为开发建设金滩提供了参考依据.%Sandy beach of Jintan in Northern Bay is taken as the research area and Landsat ETM + is provided by American landsat asthe data source.The time span of the data is from 2000 to 2008,totaling 28 time span.Elevation variation of beach,the gradient and velocity of deposition are determined by applying waterside line elevation technology based on multi-temporal satellite remote-sensing images and the result shows that the gradient is 2.3％.The same elevation of waterside line moves 2.7m per annum towards sea and the elevation of beach increases 0.068meter per annum.The research conclusion provides the theory foundation for the development of the Jintan in Northern Bay.