A51. 1d non-stationary propagation
The purpose of this test is to demonstrate the difference in behaviour between first and third order propagation. A domain with deep water is considered so that the propagation velocity is known and constant.
At the incident wave boundary a wave field enters which is constant in time. The incident wave field has a narrow directional distribution, and has energy concentrated in one frequency bin.
The value of Hs as function of distance for t=1 hour is shown for: 1, the analytic solution, 2, the BSBT scheme, 3, the S&L scheme.
2 cases are considered: