Next Article in Journal
Modelling of Soil Erosion and Accumulation in an Agricultural Landscape—A Comparison of Selected Approaches Applied at the Small Stream Basin Level in the Czech Republic
Next Article in Special Issue
Dominant Influencing Factors of Groundwater Recharge Spatial Patterns in Ergene River Catchment, Turkey
Previous Article in Journal
Ecological and Conservation Value of Small Standing-Water Ecosystems: A Systematic Review of Current Knowledge and Future Challenges
Previous Article in Special Issue
Application of Numerical Tools to Investigate a Leaky Aquitard beneath Urban Well Fields
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle

An Improved Method Constructing 3D River Channel for Flood Modeling

1
Northwestern Polytechnical University, Xi’an 710072, China
2
State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, China
3
Northwest Investigation Design & Research Institute, Xi’an 710065, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(3), 403; https://doi.org/10.3390/w11030403
Received: 28 December 2018 / Revised: 15 February 2019 / Accepted: 16 February 2019 / Published: 26 February 2019
(This article belongs to the Special Issue Advances in Hydrogeology: Trend, Model, Methodology and Concepts)
  |  
PDF [16701 KB, uploaded 26 February 2019]
  |     |  

Abstract

The high-resolution topography is very crucial to investigate the hydrological and hydrodynamic process. To resolve the deficiency problem of high resolution terrain data in rivers, the Quartic Hermite Spline with Parameter (QHSP) method constructing the river channel terrain based on the limited cross-section data is presented. The proposed method is able to not only improve the reliability of the constructed river terrain, but also avoid the numerical oscillations caused by the existing constructing approach, e.g., the Cubic Hermite Spline (CHS) method. The performance of the proposed QHSP method is validated against two benchmark tests. Comparing the constructed river terrains, the QHSP method can improve the accuracy by at least 15%. For the simulated flood process, the QHSP method could reproduce more acceptable modeling results as well, e.g., in Wangmaogou catchment, the numerical model applying the Digital Elevation Model (DEM) produced by the QHSP method could increase the reliability by 18.5% higher than that of CHS method. It is indicated that the QHSP method is more reliable for river terrain model construction than the CHS and is a more reasonable tool investigating the hydrodynamic processes in river channels lacking of high resolution topography data. View Full-Text
Keywords: river channel; terrain construction; Quartic Hermite Spline with Parameter; DEM; hydrodynamic model river channel; terrain construction; Quartic Hermite Spline with Parameter; DEM; hydrodynamic model
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Hu, P.; Hou, J.; Zhi, Z.; Li, B.; Guo, K. An Improved Method Constructing 3D River Channel for Flood Modeling. Water 2019, 11, 403.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top