@misc{10481/80329,
year = {2022},
month = {2},
url = {https://hdl.handle.net/10481/80329},
abstract = {This paper investigates the impact of the bridge-pilling modifications on the tidal flow at the strait of a humanaltered
mesotidal estuary (Cádiz Bay, Spain). The analysis was accomplished by combining (1) field data of
current velocities in a cross-section close to the pile of a recently built bridge, and (2) hydrodynamics results
from the calibrated and tested DELFT3D numerical model on the study site. The analysis was focused on
bridge piling effects at intratidal scale during neap and spring tides. Semidiurnal (D2), quarti-diurnal (D4)
and sixth-diurnal (D6) bands were examined. The ratio of quarter-diurnal to semidiurnal amplitudes (D4/D2)
is largest (>1) near the bottom of the channel due to friction, and the ratio D6/D2 is largest (>1.5) close
to the pile and in the shallowest part of the cross-section, due to internal asymmetry and tidal advective
accelerations. Comparing neap and spring tides, the most marked asymmetries are found in the latter. These
asymmetries occur around the wake of the pile, alternating from flood to ebb. The location of the bridge
pile causes a decrease in the amplitude of D2 (50%), and a phase lag in the tidal wave of 30 min. The D6
amplitude increases up to almost 100% due to distortion of the tidal wave induce by the wake created at
the pile. Moreover, the pile reduces about 1 m the depth where the pycnocline is observed. Additionally,
the pile can be considered as an obstacle for the sediment flux. These effects can be extrapolated to similar
infrastructures, such as wind or wave energy farms, that can potentially modify the estuarine dynamics.},
organization = {Spanish Government	CTM2017-89531-R},
organization = {Department of Economy, Knowledge, Business and Universities of the Andalusian Regional Government, Spain	A-TEP-88-UGR20},
publisher = {Elsevier},
keywords = {Bridge-pile},
keywords = {Tidal flow},
keywords = {Field survey},
keywords = {Numerical modeling},
keywords = {Estuary},
title = {Bridge-piling modifications on tidal flows in an estuary},
doi = {10.1016/j.coastaleng.2022.104093},
author = {Zarzuelo Romero, Carmen and Díez Minguito, Manuel and Ortega Sánchez, Miguel},
}