A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modeling Tidal Dynamics and Tidal Datums along the Coasts of Texas and Western Louisiana
A tide model is being developed for the Northwestern Gulf of Mexico in support of VDatum, the National Oceanic and Atmospheric Administration's (NOAA) vertical datum transformation tool. The model domain extends from south of the US/Mexico border in the west to Atchafalaya Bay, Louisiana in the east. A high-resolution unstructured grid was created to represent the complex shoreline and fine bathymetric features. Efforts have been made to include most of the Intracoastal Waterway and to resolve the major navigational channels and barrier islands. The grid sizes vary from about 40 m along the channels/islands to 300 m along the coasts to 30 km at the open ocean boundary. The two-dimensional version of the ADvanced CIRCulation model is employed to simulate barotropic tides and depth-integrated tidal currents. Tidal datums, including mean lower low water, mean low water, mean high water and mean higher high water, as well as tidal harmonics, are derived from the simulated tidal water levels and validated against available observations at various tidal gauges obtained from NOAA's Center for Operational Oceanographic Products and Services and the Texas Coastal Ocean Observation Network. Tides in the area are mostly diurnal. K1 and O1 are of similar magnitudes and are the two dominant tidal constituents in the open coast. Both K1 and O1 amplitudes change only slightly in the coastal waters. However, M2 amplitudes have a great spatial variability with magnitude comparable to the diurnal components over the northern Louisiana-Texas shelf. The results of sensitivity studies on the boundary conditions, bottom friction formulation, and other parameters are also described.
Modeling Tidal Dynamics and Tidal Datums along the Coasts of Texas and Western Louisiana
A tide model is being developed for the Northwestern Gulf of Mexico in support of VDatum, the National Oceanic and Atmospheric Administration's (NOAA) vertical datum transformation tool. The model domain extends from south of the US/Mexico border in the west to Atchafalaya Bay, Louisiana in the east. A high-resolution unstructured grid was created to represent the complex shoreline and fine bathymetric features. Efforts have been made to include most of the Intracoastal Waterway and to resolve the major navigational channels and barrier islands. The grid sizes vary from about 40 m along the channels/islands to 300 m along the coasts to 30 km at the open ocean boundary. The two-dimensional version of the ADvanced CIRCulation model is employed to simulate barotropic tides and depth-integrated tidal currents. Tidal datums, including mean lower low water, mean low water, mean high water and mean higher high water, as well as tidal harmonics, are derived from the simulated tidal water levels and validated against available observations at various tidal gauges obtained from NOAA's Center for Operational Oceanographic Products and Services and the Texas Coastal Ocean Observation Network. Tides in the area are mostly diurnal. K1 and O1 are of similar magnitudes and are the two dominant tidal constituents in the open coast. Both K1 and O1 amplitudes change only slightly in the coastal waters. However, M2 amplitudes have a great spatial variability with magnitude comparable to the diurnal components over the northern Louisiana-Texas shelf. The results of sensitivity studies on the boundary conditions, bottom friction formulation, and other parameters are also described.
Modeling Tidal Dynamics and Tidal Datums along the Coasts of Texas and Western Louisiana
Xu, Jiangtao (author) / Myers, Edward (author)
11th International Conference on Estuarine and Coastal Modeling ; 2009 ; Seattle, Washington, United States
Estuarine and Coastal Modeling (2009) ; 494-513
2010-09-27
Conference paper
Electronic Resource
English
An improved method for computing tidal datums
| Elsevier | 2023
Highlight Article - Implementing Tidal Datums in GeoCue
| Online Contents | 2009
Delineation of Tidal Datums, Water Surface Slopes with GPS
| British Library Online Contents | 1995