53 
7.3.2 Travel times and water levels 
When a signal propagates from the western model boundary (North Sea 2 km), the signal 
component starting north of Scotland is the first to arrive on the German coast. The waves 
proper reach their maximum at Cuxhaven 12 hours after having entered the model area from 
the north-west. A secondary maximum occurs about 3 hours later (Fig. 7.3.5). The continued 
water level rise thereafter results from a highly unrealistic superposition of the signals arriving 
from the north-west and from the Channel (Fig. 7.3.6). 
Fig. 7.3.5: Water level evolution at Aberdeen and Cuxhaven (input signal: 3 positive single 
signals, period 1800 s, wave height 5 m, from the west, North Sea 2 km) 
Fig. 7.3.6: Water level evolution at Dover and Cuxhaven (input signal: 3 positive single 
signals, period 1800 s, wave height 5 m, from the west, North Sea 2 km))