Rapid tidal reconstruction with UTide and the ADCIRC tidal database

Abstract

The quantification of storm surge is vital for flood hazard assessment in communities affected by coastal storms. The astronomical tide is an integral component of the total still water level needed for accurate storm surge estimates. Coastal hazard analysis methods, such as the Coastal Hazards System and the StormSim Coastal Hazards Rapid Prediction System, require thousands of hydrodynamic and wave simulations that are computationally expensive. In some regions, the inclusion of astronomical tides is neglected in the hydrodynamics and tides are instead incorporated within the probabilistic framework. There is a need for a rapid, reliable, and accurate tide prediction methodology to provide spatially dense reconstructed or predicted tidal time series for historical, synthetic, and forecasted hurricane scenarios. A methodology is proposed to combine the tidal harmonic information from the spatially dense Advanced Circulation hydrodynamic model tidal database with a rapid tidal reconstruction and prediction program. In this study, the Unified Tidal Analysis program was paired with results from the tidal database. This methodology will produce reconstructed (i.e., historical) and predicted tidal heights for coastal locations along the United States eastern seaboard and beyond and will contribute to the determination of accurate still water levels in coastal hazard analysis methods.

Combined Coastal Sea Level Estimation Considering Astronomical Tide and Storm Surge Effects: Model Development and Its Application in Thermaikos Gulf, Greece

“…Also, each constituent frequency aggregated with the corresponding relative Greenwich phase lag may be referred to simply as phase lag and represented as a function of time. Therefore, Equation ( 2) is as follows [36]:…”

Comparative Studies Of Residual Water Level In Manado And Melonguane Coastal Area During Tropical Cyclone In 2021

“…This is like what happened with Tropical Cyclone (TC) Pam in 2015, where the event caused flooding and damage in Tuvalu, Kiribati and Wallis, and Futuna, which is more than 1,000 km from TC Pam's path (Hoeke et al, 2021). Increases in sea level generally caused by storms are usually the most significant source of flooding in coastal environments (Torres & Nadal-caraballo, 2021). Based on this incident, the urgency to study changes in sea level around the coast is high because it can be a reference in mitigating flood disasters.…”