期刊论文

A new method for extracting lake bathymetry using multi-temporal and multi-source remote sensing imagery: A case study of Dongting Lake

Jiang, Changbo(jiangchb@csust.edu.cn)

中文

地理学报

0375-5444

2019

74

7

1467-1481

10.11821/dlxb201907015

Natural Science Foundation of China, No.91647118, No.51809020; Natural Science Foundation of Hunan Province, No.2016JJ3011, No.2018JJ3535.

本校为第一机构

湖底地形数据是湖泊流域规划与治理、湖区冲淤变化研究、水资源利用和生态环境保护的重要基础。但传统的大型湖泊湖底地形数据获取手段耗时长、投入大,因此,有必要研究一种基于遥感影像快速获取湖底地形数据的方法。本文以洞庭湖为研究对象,采用Landsat和MODIS系列遥感影像提取湖区边界,基于趋势面分析法和克里金插值法,反演湖区边界各点对应的水位,将带有水位信息的边界点作为高程点实现湖底地形反演,进一步用实测湖底地形验证反演方法的可靠性。研究结果表明,克里金插值法水位反演效果较好,交叉验证的误差标准平均值在0.2 m以内,水位样本点分布较多处,基于克里金法的地形反演绝对误差在1 m以内...

Lake bathymetry can provide abundant information for basin planning and governance, watershed erosion and siltation management, water resource utilization, as well as environmental protection. In particular, lake bathymetry is essential for lake development and conservation, and is also closely related to sediment deposition and removal. A number of sounding techniques, such as single-beam sonar sounding, multi-beam sonar sounding, and unmanned ship sounding, have been applied to extract underwater topography of lakes. These techniques, albeit ...