4H - Underwater Node Brochure

Underwater nodes provide the necessary infrastructure in terms of e.g. electrical power and data connections to continuously operate complex sensor systems having high power consumption on the seafloor. A stable underwater node technology for shallow water installation (< 300 m) has been developed in the frame of COSYNA (Coastal Observing System for Northern and Artic Seas). The COSYNA underwater node can be installed with a cable connection to shore up to 30 km offshore for a yearround operation. Thus, it provides the opportunity for a continuous observation of processes in the oceans and coastal areas. Since 2014 two COSYNA underwater systems are in operation: one is offshore the German island Helgoland, the second one is installed in the Arctic at 79°N offshore Spitsbergen (Svalbard).