Harmonic Boundary Series

The table below is an example of harmonic constituents for Trakhuc estuary.

Name	Speed(deg/hr)	Amplitude (m)	Phase (s)
Q1	13.3987	0.04	126.073
O1	13.943	0.261	146.432
P1	14.9589	0.097	182.577
K1	15.0411	0.293	185.991
N2	28.4397	0.04	59.376
M2	28.9841	0.185	75.861
S2	30	0.072	114.865
K2	30.0821	0.025	95.187

EE10 allows the user to add these harmonic constituents for use in the open boundary condition by following these steps:

1. In External Forcing Data, RMC on Harmonic Tides and select Add New Data Series

Figure 1. Assigning tidal boundary conditions.

2. Select Add New button to create new series

3. Enter the name in Current Series, as "Tides"

4. Select Change to add the harmonic constituents, in this case, there are 8.

Figure 2. Add new tidal boundary series.

5. Enter the name of harmonic constituents (Q1, O1,...) in the Search box and select Search and add Harmonic Constituent

6. Click Ok when all 8 harmonic constituents have been added

Figure 3. Add harmonic constituents.

7. Copy the tidal constituent values (amplitude, phase) from the above table into the form.

8. Click Plot button to see the tidal time-series plot as shown in Figure 5

9. Click OK button to finish

Figure 4. Add harmonic constituent values.

Figure 5. Tides series plot.

Assign Tidal Boundary

To assign these tides to the open boundary cells, steps are introduced in section 4.3.2 (Build a 3D Coastal Model (Level 2 Step-by-Step Guidance). However, instead of choosing tidal series for Pressure, the user selects the series for Harmonic as shown in Figure 6.

Figure 6. Assign tides boundary