气候变化领域集成服务门户(CCPortal): A New Digital Lake Bathymetry Model Using the Step-Wise Water Recession Method to Generate 3D Lake Bathymetric Maps Based on DEMs

CCPortal

DOI	10.3390/w11061151
	A New Digital Lake Bathymetry Model Using the Step-Wise Water Recession Method to Generate 3D Lake Bathymetric Maps Based on DEMs
	Zhu, Siyu; Liu, Baojian; Wan, Wei; Xie, Hongjie; Fang, Yu; Chen, Xi; Li, Huan; Fang, Weizhen; Zhang, Guoqing; Tao, Mingwei; Hong, Yang
通讯作者	Wan, W ; Hong, Y (通讯作者)
发表日期	2019
ISSN	2073-4441
卷号	11 期号:6
英文摘要	The availability of lake bathymetry maps is imperative for estimating lake water volumes and their variability, which is a sensitive indicator of climate. It is difficult, if not impossible, to obtain bathymetric measurements from all of the thousands of lakes across the globe due to costly labor and/or harsh topographic regions. In this study, we develop a new digital lake bathymetry model (DLBM) using the step-wise water recession method (WRM) to generate 3-dimensional lake bathymetric maps based on the digital elevation model (DEM) alone, with two assumptions: (1) typically, the lake's bathymetry is formed and shaped by geological processes similar to those that shaped the surrounding landmasses, and (2) the agent rate of water (the thickness of the sedimentary deposit proportional to the lake water depth) is uniform. Lake Ontario and Lake Namco are used as examples to demonstrate the development, calibration, and refinement of the model. Compared to some other methods, the estimated 3D bathymetric maps using the proposed DLBM could overcome the discontinuity problem to adopt the complex topography of lake boundaries. This study provides a mathematically robust yet cost-effective approach for estimating lake volumes and their changes in regions lacking field measurements of bathymetry, for example, the remote Tibetan Plateau, which contains thousands of lakes.
关键词	TIBETAN PLATEAU NAM CO SATELLITE ALTIMETRY LEVEL CHANGES SEDIMENT CLASSIFICATION FLUCTUATIONS ANGLE
英文关键词	lake bathymetry; lake volume; DEM; slope
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000475346300039
来源期刊	WATER
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259579
推荐引用方式 GB/T 7714	Zhu, Siyu,Liu, Baojian,Wan, Wei,et al. A New Digital Lake Bathymetry Model Using the Step-Wise Water Recession Method to Generate 3D Lake Bathymetric Maps Based on DEMs[J]. 中国科学院青藏高原研究所,2019,11(6).
APA	Zhu, Siyu.,Liu, Baojian.,Wan, Wei.,Xie, Hongjie.,Fang, Yu.,...&Hong, Yang.(2019).A New Digital Lake Bathymetry Model Using the Step-Wise Water Recession Method to Generate 3D Lake Bathymetric Maps Based on DEMs.WATER,11(6).
MLA	Zhu, Siyu,et al."A New Digital Lake Bathymetry Model Using the Step-Wise Water Recession Method to Generate 3D Lake Bathymetric Maps Based on DEMs".WATER 11.6(2019).