The German Offshore-Metmasts Amrumbank West and Arkonabecken

Figure 7: The lattice mast
Figure 8: Top view
Station history
The station was erected in April 2005.
Operation started in April 2005 and it is
still going on.
Data acquisition system
A set of reliable identical conventional cup
anemometers has been arranged on the
Northwest side facing away from the
platform. The anemometers measure the
windspeed at seven different elevations.
The lowest level is at 35m, the highest
level is at 90m. The wind direction is
recorded using conventional wind vanes.
Furthermore, the wind is measured three-
dimensionally by an ultrasonic
anemometer. Data concerning
atmospheric humidity, air temperature and
air pressure complement these readings.
The windspeed data is collected in several
altitudes. The height difference between
successive measuring altitudes is about
10 m. This permits the determination of
windspeed gradients. In order to exclude
systematic errors, measuring instruments
of different types or with different
measuring procedures are used. Only well
proven measuring instruments are utilised.
2.2 Arkona Becken Südost
Since November 2006 the metmast
“Arkona Becken Südost” has been
constructed and at work.
Water depth
The water depth is about 25 m. The water
depths around the station vary within
narrow limits.
Fetch distances
Fgure 9: Location and fetches
Figure 9 shows the fetch distances for the
research station. The fetches vary from
40 km to the Islands of Rügen (Germany)
and Bornholm (Denmark), and 100 km to
the Island of Sealand (Denmark) in the
West.
Surrounding land
The station Arkona Becken Südost is
surrounded by the islands of Rügen and
Bornholm and the mainland of
Mecklenburg Vorpommern to the South,