伶仃洋遥感动态监测

水利部珠江水利委员会以卫星遥感资料为信息源对珠江河口湾──伶仃洋进行动态监测已有13a的历史, 积累的资料有:1973年至1992年25个时相的各种潮情及水情的卫星影像资料。该动态监测研究主要是进行河口湾水体悬浮泥沙含量及其分布特征研究; 岸线和近岸浅滩地形及其动态变化研究; 流场特征研究; 河(海)岸及近岸工程的现状与变化及其对河口的水动力影响等研究。采用的主要技术方法是综合运用计算机和光学图像处理技术对卫星遥感图像进行处理, 并据河口水动力学与地学理论进行分析。分析成果为伶仃洋河口治理开发规划与工程实施、滩涂资源的合理开发、航道开发与治理等提供了新的科学依据。其中一些合理建议已为生产部门所采纳。发挥了很好的经济效益和社会效益。

DYNAMIC REMOTE SENSING MONITORING IN LINGDINGYANG

Abstract Zhujiang Water Conservancy Commission of the Ministry of Water Conservancy has monitered dynamically the area of Hekouwan-Lingdingyang of Zhujiang for 13 years with satellite remote sensing data.The satellite image data of 25 temporal of tidal current and water situation from 1973 to 1992 were collected.The dynamic monitoring is mainly for the study of suspended mud and sand content in water at Hekouwan and their distribntion characteristics;the coastline and shoal terrains near the bank and their dynamic change;flowing area characteristics; the projects current situation and change along and near the bank and their affection to water dynamics of river mouth.The satellite remoto sensing images were processed with computer and optical image processing technique,and analyzed according to water dynamics of river mouth and geoscience theory.The analyzed results became the new scientific basis for the planning of Lingding river mouth hamese and project implementation,reasonal usage of resources at shallows,the development and hamess of river courses.Some suggestions have been adopted by operation departments,and brought good social and economical benefits.