| 摘要: |
| 收集了1976～2000年现代黄河三角洲地区的Landsat影像，采用平均高潮线法解译出25 a来的海岸线，分析了现代黄河三角洲地区的岸线长度变化，迁移特征以及河口三角洲的时空发育规律。结果表明：现代黄河三角洲地区岸线变迁可以分为三部分：北部、中部和南部，其中中部是变化最剧烈的岸段。根据河道摆动规律和三角洲的延伸方向，现代黄河三角洲的发育可以分为四个阶段：填湾阶段(1976～1981年)、中部突出阶段 (1981～1983年)、 东南方向突出和鸟嘴状沙嘴形成阶段 (1983～1996年)、河流改道和新沙嘴 |
| 关键词: 黄河三角洲 海岸线变迁 遥感 GIS |
| DOI： |
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| The shoreline migration and the Delta changes study in the modern Yellow River Delta using remote sensing and GIS |
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| Abstract: |
| Due to the Yellow River's huge sediment load, frequent floods, and shifts in course, shoreline of the Yellow River Delta changes quickly. To detect the shoreline migrations in the modern Yellow River Delta, a set of Landsat images from 1976 to 2000 were collected and shorelines were interpreted using HWL method. According to the shoreline migrations characteristics, the whole shoreline can be divided into three parts: north section, south section and central section. According to the river course oscillation and the delta progradation direction, the modern Yellow River Delta formation can be divided into four stages: bay silting stage (1976～1981), central progradating stage (1981～1983), southeast progradating and beak-shaped spit formation stage (1983～1996), and river course shift and a new spit forming stage (1996～2000). During the four stages, with only about 49.3 km2 eroded, there were 378.2km2 new land formed, and net accretion area was 328.9 km2. It is helpful to study the spatial and temporal formation pattern of the modern Yellow River delta. |
| Key words: the Yellow River Delta shoreline migration remote sensing GIS |
