DOI: 10.5194/hess-19-3605-2015
Scopus记录号: 2-s2.0-84939626483
论文题名: Integration of 2-D hydraulic model and high-resolution lidar-derived DEM for floodplain flow modeling
作者: Shen D ; , Wang J ; , Cheng X ; , Rui Y ; , Ye S
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 8 起始页码: 3605
结束页码: 3616
语种: 英语
Scopus关键词: Banks (bodies of water)
; Digital storage
; Floods
; Forestry
; Hydraulic models
; Interpolation
; Inverse problems
; Mesh generation
; Optical radar
; Water levels
; Digital elevation model
; Floodplain modeling
; High-resolution lidar
; Interpolation points
; Inverse distance-weighted interpolation
; Run-length encoding
; Topographic information
; Two Dimensional (2 D)
; Surveying
; computer simulation
; digital elevation model
; flooding
; floodplain
; flow modeling
; hydrological modeling
; interpolation
; lidar
; resolution
; two-dimensional modeling
; water level
; China
; Dongting Lake
; Hunan
英文摘要: The rapid progress of lidar technology has made the acquirement and application of high-resolution digital elevation model (DEM) data increasingly popular, especially in regards to the study of floodplain flow. However, high-resolution DEM data pose several disadvantages for floodplain modeling studies; e.g., the data sets contain many redundant interpolation points, large numbers of calculations are required to work with data, and the data do not match the size of the computational mesh. Two-dimensional (2-D) hydraulic modeling, which is a popular method for analyzing floodplain flow, offers highly precise elevation parameterization for computational mesh while ignoring much of the micro-topographic information of the DEM data itself. We offer a flood simulation method that integrates 2-D hydraulic model results and high-resolution DEM data, thus enabling the calculation of flood water levels in DEM grid cells through local inverse distance-weighted interpolation. To get rid of the false inundation areas during interpolation, it employs the run-length encoding method to mark the inundated DEM grid cells and determine the real inundation areas through the run-length boundary tracing technique, which solves the complicated problem of connectivity between DEM grid cells. We constructed a 2-D hydraulic model for the Gongshuangcha detention basin, which is a flood storage area of Dongting Lake in China, by using our integrated method to simulate the floodplain flow. The results demonstrate that this method can solve DEM associated problems efficiently and simulate flooding processes with greater accuracy than simulations only with DEM. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78442
Appears in Collections: 气候变化事实与影响
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作者单位: Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing, Jiangsu, China; Department of Geographic Information Science, Nanjing University, Nanjing, Jiangsu, China; Changjiang River Scientific Research Institute, Changjiang Water Resources Commission, Wuhan, Hubei, China; Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, Jiangsu, China; Engineering Technology Research Center of Mountain Torrent, Geological Disaster Prevention of the Ministry of Water Resources, Wuhan, Hubei, China
Recommended Citation:
Shen D,, Wang J,, Cheng X,et al. Integration of 2-D hydraulic model and high-resolution lidar-derived DEM for floodplain flow modeling[J]. Hydrology and Earth System Sciences,2015-01-01,19(8)