Background
Wave energy is usually converted to total sea state parameters (Hs, Tp, Direction) for engineering applications. However, in some areas of the world, especially those affected by long swells, it is important to divide wave energy into different partitions, to assess the fatigue due to sea and swell components of the wave spectra.
Scope of Work
CA Metocean was appointed by AqualisBraemar Technical Services to provide metocean criteria at three locations in the North Arabian Sea including:
- Monthly tables of total sea and partitioned wave data (Sea & Swell/s) Hs vs. Tp by direction (8 sectors)
- Monthly mean values of total sea data (Hs, Tp, Dir) for each year from 1979 to 2019, as well as 5-year moving averages (to assess the change in weather conditions within the last 40 years)
Key Features
- Full spectral data at the locations of interest was obtained from a global hindcast model as well as total sea parameters from two additional global model hindcasts
- Calibration of hindcast models was carried out by comparing co-located data with satellite measurements
- Wave partitioning was done using CA Metocean implementation of 2-D wave spectrum partition MATLAB script, based on Hanson and Phillips (2001), with some modifications and without wave system tracking
- Calculation of spectral wave parameters: Hs, Tp and direction, for each partition
