【摘要】 利用黄河口地区遥感影像作为基本数据源,采用GIS技术对SPOT高精度数据与信息量丰富的ETM数据进行联合处理,提取海岸线并叠加分析,对比统计1986—2006年海岸线演化的时空动态特征。结果表明:黄河口地区海岸线演化的总体趋势为不断向海域淤积扩张;黄河从北汊入海时,北汊造陆速度加快,南侧遭受侵蚀。黄河口海岸线演化主要影响因素有黄河来水来沙量、岸坡岩土体工程地质特性、海洋动力、海平面上升、地面沉降等。更多还原

【Abstract】 It extracts shoreline,conducts superposition analysis and compares temporal and spatial dynamic characteristics of shoreline evolution in 1986-2006 periods by using SPOT and ETM data of the Yellow River estuary.The outcomes show that a) the general trend of shoreline evolution of the Yellow River estuary deposits and expands towards the sea area continuously;b) the continent-making of north river branch speeds up and the south side is eroded when the Yellow River flows into the sea from the north branch.The main affecting factors of shoreline evolution are the quantity of coming water and sediment,geological characteristics of rock and soil mass of bank slope,ocean dynamic,sea level rise and surface depression.更多还原