Hydrographic boundary conditions
Helgoland is the only North Sea island of more than 40 km distance to the nearest costline,
a true off-shore island.
The mean residual current passes the island counter-clockwise
Figure 1: Percentage of Origin of the Particle-Distribution
virtually sampled at Helgoland Roads
Figure 2: The 14 days trajectories for the single plankton samples visualise the specific three
Figure 3: Temperature distributions observed from Satellite (BSH) visualise potential influences from the english Channel on the south east of the north sea.
Figure 4: The multi annual temperature distribution at Helgoland Roads
indicating a strong relative variance in winter