Umiammakku Nunaat – installation and operation

The installation in Umiammakku Nunaat consists of a base station located in a small metal technical shed (roughly the size of a small container) overlooking the unstable slopes. The following sensors are connected to the base station: weather station, seismometer and deformation cameras. On the south coast of Karrat Ice Fjord, there is a mast with two deformation cameras, which are connected to the base station via a WLAN data connection. An electronic control unit in the base station automatically controls operations and collects the measurements in a single data set. Data is automatically collected and stored locally and transferred to a data portal when a data connection is automatically established via the base station’s satellite antenna.

Monitoring data from Umiammakku Nunaat is transferred to the data portal via VSAT-based satellite communication (Tusass Greensat). This solution requires a transmission power of over 100 W, which is demanding on the energy supply system.

The station is self-sufficient in energy and uses a coordinated system of solar cells, two methanol-based fuel cell generators and four large batteries. The fuel cells take over during periods of insufficient power production from the solar cells and run periodically to ensure stable operation.