Journal cover Journal topic
Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 4.256 IF 4.256
  • IF 5-year value: 4.819 IF 5-year
    4.819
  • CiteScore value: 4.10 CiteScore
    4.10
  • SNIP value: 1.412 SNIP 1.412
  • SJR value: 2.023 SJR 2.023
  • IPP value: 3.97 IPP 3.97
  • h5-index value: 58 h5-index 58
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 99 Scimago H
    index 99
Discussion papers
https://doi.org/10.5194/hess-2019-87
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-2019-87
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 08 Mar 2019

Research article | 08 Mar 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Hydrology and Earth System Sciences (HESS).

A Comprehensive Quasi-3D Model for Regional-Scale Unsaturated-Saturated Water Flow

Wei Mao1, Yan Zhu1, Heng Dai2, Ming Ye3, Jinzhong Yang1, and Jingwei Wu1 Wei Mao et al.
  • 1State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei 430072, China
  • 2Institute of Groundwater and Earth Sciences, Jinan University, Guangzhou, Guangdong 32306, China
  • 3Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, FL 32306, USA

Abstract. For computationally efficient modeling of unsaturated-saturated flow systems of regional scale, it is necessary to use Quasi three-dimensional (3-D) schemes that consider one-dimensional (1-D) soil water flow and 3-D groundwater flow. However, it is still practically challenging for regional-scale problems due to the high non-linear and intensive input data needed for soil water modeling, the reliability of the coupling scheme, and the complicated modeling operation. This study developed a new Quasi-3D model coupled the soil water balance model UBMOD with MODFLOW. A new iterative scheme was developed, in which the vertical net recharge and unsaturated zone depth were used as the exchange information. A modeling framework was developed by Python script to wrap the coupled model, the pre- and the post-process modules, which gave a comprehensive modeling tool from data preparation to results displaying. The strength and weakness of the coupled model are evaluated by using two published studies. The comparison results show that the coupled model is satisfactory in terms of computational accuracy, mass balance error and cost. Additionally, the coupled model is used to evaluate groundwater recharge in a real-world study. The measured groundwater table and soil water content are used to calibrate the model parameters, and the groundwater recharge data from a two years’ tracer experiment is used to evaluate the recharge estimation. The field application further shows the practicability of the model. The developed model and the modeling framework provide a convenient and flexible tool for evaluating unsaturated-saturated flow system at the regional scale.

Wei Mao et al.
Interactive discussion
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for Authors/Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Wei Mao et al.
Wei Mao et al.
Viewed  
Total article views: 210 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
166 43 1 210 3 4
  • HTML: 166
  • PDF: 43
  • XML: 1
  • Total: 210
  • BibTeX: 3
  • EndNote: 4
Views and downloads (calculated since 08 Mar 2019)
Cumulative views and downloads (calculated since 08 Mar 2019)
Viewed (geographical distribution)  
Total article views: 132 (including HTML, PDF, and XML) Thereof 132 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 21 May 2019
Publications Copernicus
Download
Short summary
A new quasi-3D GIS-based model was developed by coupling a soil water balance model with MODFLOW iteratively for regional scale water flow modeling. The model was tested to be effective and efficient with well-maintained mass balance. The modeling framework was developed by Python script to wrap the coupled model with the pre- and post-process modules. The model is then used to evaluate groundwater recharge in a real-world irrigated area, which shows the model practicability in regional scales.
A new quasi-3D GIS-based model was developed by coupling a soil water balance model with MODFLOW...
Citation