NDLI: A Comprehensive Approach for Estimating Hydraulic Quantities in a Multi-branched Estuarine System

Content Provider	Springer Nature Link
Author	Umeyama, Motohiko Nguyen, Duc Hoang Vu Minh, Cat Le, Xuan Roanh Motani, Satoshi
Copyright Year	2014
Abstract	Despite many previous investigations, there is no theoretically justifiable equation to determine the freshwater discharge, tidal velocity, and salinity in a complex estuary that contains several branches. In this study, the longitudinal distributions of freshwater and salinity concentration in multi-branched estuaries are investigated using a mathematical model, considering the energy balance by frictional head loss and the salt balance by diffusion and advection in a one-dimensional steady-state condition. We attempt to obtain the time-mean freshwater discharge rate quantitatively at a junction where the main flow separates into two branches. The salinity distribution along each branch is calculated by following the dispersion coefficient equation previously proposed for a single estuary. The salinity field is divided into the near-coast region and the upstream region, because in each segment the inland velocity varies according to the tidal flux. For computing the tidal velocity, we propose the Burgers equation and the Hoph-Cole transformation. The theoretical results obtained by these equations were found to be in good agreement with a set of observed data in the Red River estuary system.
Starting Page	3937
Ending Page	3955
Page Count	19
File Format	PDF
ISSN	09204741
Journal	Water Resources Management
Volume Number	28
Issue Number	12
e-ISSN	15731650
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-06-27
Publisher Institution	European Water Resources Association (EWRA)
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Salt intrusion Geometric characteristics Multi-branched estuary Red River Hydrogeology Hydrology/Water Resources Geotechnical Engineering & Applied Earth Sciences Atmospheric Sciences Civil Engineering Environment
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Civil and Structural Engineering

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