若尔盖盆地黑河的牛轭湖沿程变化与形态特征
发布时间：2019-05-30 01:18
【摘要】：基于SPOT(1990年和2000年)和Google Earth(2000—2014年)遥感影像的图像分析,对黑河干流及上游的3条支流(格曲、麦曲、哈曲)的216个典型牛轭湖以及相应的河曲带进行形态参数的定义与分析。沿黑河上游至下游,河曲带的宽度是增加的,增长率的变化趋势为"急—缓—急";中游牛轭湖数量最多;下游受到泥沙淤积的影响更大,牛轭湖从Ω形发展成U形和C形所需时间远小于上中游。1990—2013年黑河干流仅发生2次裁弯,分别形成Ω形和U形牛轭湖,说明黑河牛轭湖的发育速率较慢。
[Abstract]:Based on the image analysis of SPOT (1990 and 2000) and Google Earth (2000-2014 remote sensing images, the main stream of the Heihe River and its three upper tributaries (Gequ, Maqu) are analyzed. The morphological parameters of 216 typical Niu yoke lakes and the corresponding river koji belts are defined and analyzed. Along the upper reaches of Heihe River to the lower reaches of Heihe River, the width of Hequ belt is increased, and the change trend of growth rate is "rapid, slow and rapid", and the number of Niuyoke Lake in the middle reaches of Heihe River is the largest. The downstream of Heihe River is more affected by sediment deposition, and the time required to develop Niu yoke Lake from 惟 shape to U shape and C shape is much smaller than that in the upper and middle reaches. From 1990 to 2013, only two bends occurred in the main stream of Heihe River, forming 惟 shaped and U shaped Niu yoke lakes, respectively. It shows that the development rate of Heihe Niuyoke Lake is slow.
【作者单位】： 长沙理工大学水利工程学院;水沙科学与水灾害防治湖南省重点实验室;水利部黄河泥沙重点实验室;黄河水利科学研究院;
【基金】：水利部黄河泥沙重点实验室开放课题基金(2017005) 黄河水利科学研究院院所长基金(HKY-JBYW-2016-03) 湖南省研究生科研创新项目(CX2017B477)
【分类号】：TV147
，
本文编号：2488385
[Abstract]:Based on the image analysis of SPOT (1990 and 2000) and Google Earth (2000-2014 remote sensing images, the main stream of the Heihe River and its three upper tributaries (Gequ, Maqu) are analyzed. The morphological parameters of 216 typical Niu yoke lakes and the corresponding river koji belts are defined and analyzed. Along the upper reaches of Heihe River to the lower reaches of Heihe River, the width of Hequ belt is increased, and the change trend of growth rate is "rapid, slow and rapid", and the number of Niuyoke Lake in the middle reaches of Heihe River is the largest. The downstream of Heihe River is more affected by sediment deposition, and the time required to develop Niu yoke Lake from 惟 shape to U shape and C shape is much smaller than that in the upper and middle reaches. From 1990 to 2013, only two bends occurred in the main stream of Heihe River, forming 惟 shaped and U shaped Niu yoke lakes, respectively. It shows that the development rate of Heihe Niuyoke Lake is slow.
【作者单位】： 长沙理工大学水利工程学院;水沙科学与水灾害防治湖南省重点实验室;水利部黄河泥沙重点实验室;黄河水利科学研究院;
【基金】：水利部黄河泥沙重点实验室开放课题基金(2017005) 黄河水利科学研究院院所长基金(HKY-JBYW-2016-03) 湖南省研究生科研创新项目(CX2017B477)
【分类号】：TV147
，
本文编号：2488385
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