Article (Scientific journals)
Accelerating regional-scale groundwater flow simulations with a hybrid deep neural network model incorporating mixed input types: A case study of the northeast Qatar aquifer
Al-Maktoumi, Ali; RAJABI, Mohammadmahdi; Zekri, Slim et al.
2024In Journal of Hydroinformatics, 26 (6), p. 1333 - 1350
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Keywords :
coastal aquifer; convolutional neural network; hybrid neural network; hydraulic head prediction; surrogate model; Civil and Structural Engineering; Water Science and Technology; Geotechnical Engineering and Engineering Geology; Atmospheric Science
Abstract :
[en] This study presents the ‘Dual Path CNN-MLP’, a novel hybrid deep neural network (DNN) architecture that merges the strengths of convolutional neural networks (CNNs) and multilayer perceptrons (MLPs) for regional groundwater flow simulations. This model stands out from previous DNN approaches by managing mixed input types, including both imagery and numerical vectors. Such flexibility allows the diverse nature of groundwater data to be efficiently utilized without the need to convert it into a uniform format, which often leads to oversimplification or unnecessary expansion of the dataset. When applied to the northeast Qatar aquifer, the model demonstrates high accuracy in simulating transient groundwater flow fields, benchmarked against the well-established MODFLOW model. The model’s efficacy is confirmed through k-fold cross-validation, showing an error margin of less than 12% across all examined locations. The study also examines the model’s ability to perform uncertainty analysis using Monte Carlo simulations, finding that it achieves around 1% average absolute percentage error in estimating the mean hydraulic head. Errors are mostly found in areas with significant variations in the hydraulic head. Switching to this machine learning model from the conventional MODFLOW simulator boosts computational efficiency by about 99%, showcasing its advantage for tasks like uncertainty analysis in repetitive groundwater simulations.
Disciplines :
Civil engineering
Author, co-author :
Al-Maktoumi, Ali ;  Water Research Center, Sultan Qaboos University, Muscat, Oman ; College of Agriculture and Marine Sciences, Sultan Qaboos University, Muscat, Oman
RAJABI, Mohammadmahdi  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) ; Civil and Environmental Engineering Faculty, Tarbiat Modares University, Tehran, Iran
Zekri, Slim;  College of Agriculture and Marine Sciences, Sultan Qaboos University, Muscat, Oman
Govindan, Rajesh;  College of Science and Engineering, Hamad Bin Khalifa University, Doha, Qatar
Panjehfouladgaran, Aref;  Civil and Environmental Engineering Faculty, Tarbiat Modares University, Tehran, Iran ; Department of Civil and Environmental Engineering, Western University, London, Canada
Hajibagheri, Zahra;  Civil and Environmental Engineering Faculty, Tarbiat Modares University, Tehran, Iran
External co-authors :
yes
Language :
English
Title :
Accelerating regional-scale groundwater flow simulations with a hybrid deep neural network model incorporating mixed input types: A case study of the northeast Qatar aquifer
Publication date :
June 2024
Journal title :
Journal of Hydroinformatics
ISSN :
1464-7141
eISSN :
1465-1734
Publisher :
IWA Publishing
Volume :
26
Issue :
6
Pages :
1333 - 1350
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Hamad Bin Khalifa University
Funding text :
The authors would like to acknowledge the support of Hamed Bin Khalifa University-Qatar, and Sultan Qaboos University (SQU), Oman, for the support received through the awarded grants NPRP13S-0129-200198 (for SQU, EG/DVC/WRC/21/ 01). The support of the research group DR/RG/017 is also appreciated.
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