TITLE:
Tidal Prediction in the Sea Scheldt (Belgium) Using a Combination of Harmonic Tidal Prediction and 1D Hydraulic Modeling
AUTHORS:
Joris Vanlede, Leen Coen, Maarten Deschamps
KEYWORDS:
Harmonic, Tidal Analysis, Tidal Prediction, Modeling, Scheldt
JOURNAL NAME:
Natural Resources,
Vol.5 No.11,
August
26,
2014
ABSTRACT:
The vertical tide in the
Sea Scheldt (Belgium) is predicted using a combination of harmonic tidal
prediction and 1D hydraulic modeling. At Prosperpolder (a measurement station
close to the Dutch-Belgian border), four years of water level data (2009-2012)
are analyzed to obtain the harmonic components at that location. The accuracy
of the harmonic prediction is checked with a statistical analysis of an
astronomical hindcast for 2009-2012 against measurements. An existing 1D
hydraulic model of the tidally influenced part of the Scheldt estuary is cut
off at Prosperpolder. The time series of tidally predicted water levels at
Prosperpolder is used as a downstream boundary condition for the hydraulic
model. In this way, a tidal prediction can be obtained for any location in the
Sea Scheldt, also for locations where no harmonic components are available,
whilst guaranteeing the consistency between the predicted time series.