Implementation of Two New Spectral Input Options in HOS-Ocean -Part I
[Technical Report, Memorandum Report]
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
This report describes the implementation and testing of two new options in the higher-order spectral HOS model HOS-ocean, each of which facilitates model initialization with two-dimensional 2D frequency-directional wave spectra. The first option enables the user to generate a JONSWAP-based 2D spectrum with energy peaks at two different directions, specifying the principal directions, the directional spreads, and the JONSWAP parameters for the individual peaks. The second option facilitates model initialization using a frequency-directional spectral data file. The format of the data file is assumed to be that of the WAVEWATCH III WW3 2D spectral files, but the source of the data can be any. A library of bivariate interpolation of scattered data is installed, and used to transfer the input spectral data onto the HOS-ocean model grids in order to initialize the model fields. Results from preliminary test cases are presented and discussed here to evaluate the basic performance of the model utilizing the new features.
- Physical and Dynamic Oceanography