Landsat-TM遥感影像岸线变迁解译研究--以九龙江河口地区为例

利用遥感与GIS技术相合的手段，在分析九龙江河口地区地物波谱的基础上，对研究区两期遥感影像（1986年6月与2000年5月的陆地卫星Landsat—TM资料）进行解译和岸线提取。通过与20世纪70年代的地形图进行对比分析，发现九龙江北、西溪过河口大沙洲后分成北、中、南3个支流入海，其中以浒茂洲两侧的支流岸线变化最大；海门岛至口门段河口两侧岸线也有不同程度的变化；厦门西港海区是本研究区岸线变化最大的区域。文章最后对岸线变迁和河口淤积进行了初步的分析。

Interpretation of coastline changes based on Landset-TM remote sensing images:an example of the mouth area of Jiulongjiang River

In this paper, the multi-temporal Landsat-TM images are used to interpret the coastline evolvement by combining remote sensing and GIS technology, based on analysis of spectrum in Jiulongjiang River estuary area. Compared with the relief map in the 1970s, it is shown from the analysis result that Jiulongjiang River is separated into three branches through the sandbank in the river-mouth, and the changes in the side of Humao sandbank are the biggest ; there arc some changes from Haimen island to Koumen ; and the west port of Xiamen is the largest area of coastline change. At the last, this paper analyses the cause of the coastline evolvement and estuary sedimentation.