秦皇岛市海岸线遥感提取及变化监测

监测海岸线的变化是海岸带管理、海平面变化和海岸带演变研究中一项非常重要的任务,遥感技术凭借其高时效、大范围、低成本等特点正逐渐成为监测海岸线变化的重要手段。以秦皇岛市的海岸为例,结合海岸类型和潮位校正对高分辨率SPOT卫星影像进行海岸线提取,并利用同时期海岸线实地测量数据对海岸线提取进行精度验证,结果表明：使用该方法提取的海岸线精度较高。利用该方法得到研究区2006\,2009和2011年海岸线提取结果,通过叠加多时相海岸线监测其变化情况,并采用基线法定量分析北戴河砂质海岸线的变化,结果与实际情况相符。

Coastline Extraction and Change Monitoring by Remote Sensing Technology in Qinhuangdao City

Change monitoring of coastline is a significant task for coastline management,sea level change monitoring as well as coastal zone evolution.Remote sensing technology,with its high efficiency,wide coverage and low cost,is becoming an important means of monitoring coastline change.In this paper takes coastline of Qinhuangdao city as a case study,the data was extracted by SPOT satellite image and an integrated method considering coastal types and tidal correction.The accuracy of coastline extraction results was verified by the ground truthing data,which showed that it reached subpixel level.Based on the coastline extraction results of 2006,2009 and 2011,coastline change was analyzed.As for sandy coastline in Beidaihe area,baseline method was utilized to analyze quantitively the change.The result showed that the detected changes were quite consistent with the actual situation.