Next Article in Journal
Efficacy of Flushing and Chlorination in Removing Microorganisms from a Pilot Drinking Water Distribution System
Previous Article in Journal
Quantification of Temporal Variations in Base Flow Index Using Sporadic River Data: Application to the Bua Catchment, Malawi
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle

The Use of Hydrodynamic Models in the Determination of the Chart Datum Shape in a Tropical Estuary

1
Department of Hydrography, Instituto Oceanográfico de la Armada (INOCAR), Guayaquil 090208, Ecuador
2
Environmental Hydraulics Institute, Universidad de Cantabria, 39005 Santander, Spain
*
Author to whom correspondence should be addressed.
Water 2019, 11(5), 902; https://doi.org/10.3390/w11050902
Received: 7 March 2019 / Revised: 17 April 2019 / Accepted: 20 April 2019 / Published: 29 April 2019
(This article belongs to the Section Hydraulics)
  |  
PDF [5484 KB, uploaded 29 April 2019]
  |  

Abstract

Estuaries are transitional environments with ideal conditions for port construction and navigation. They represent a challenge to hydrographic services due to the dynamics of the seabed and the tidal wave deformation. The bottom slope, the convergence of the channels, and the nonlinear effects produced by the bottom friction produce variation in both the tidal range and the location of the chart datum (CD). In this study, sea level data series obtained from the nodes of the mesh of a hydrodynamic model (virtual tide gauges) were used to calculate the harmonic constituents, form factor, asymmetry, and estuary type. The final chart datum surface, obtained from the hydrodynamic model, was used to determine the separation values between zones and also the number of tidal zones in an estuarine system. It was found that in a complex hydrodynamics scenario, the use of the ellipsoidal referenced surveying (ERS) method is more convenient than traditional tidal zoning survey. In the ERS method, once the CD model is complete, it must be attached to the ellipsoid directly. Finally, the variation of the CD in different scenarios (due to anthropogenic action) was assessed. View Full-Text
Keywords: tidal constituent; chart datum; uncertainty; estuary; hydrodynamic model; tide gauge tidal constituent; chart datum; uncertainty; estuary; hydrodynamic model; tide gauge
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

Zapata, C.; Puente, A.; García, A.; García-Alba, J.; Espinoza, J. The Use of Hydrodynamic Models in the Determination of the Chart Datum Shape in a Tropical Estuary. Water 2019, 11, 902.

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