Education about OBS devices (Ocean Bottom Seismometers)

On Wednesday, September 13 and Thursday, September 14, 2023, Mr. Arne Schwenk, technical director of K.U.M. Environmental- and Marine Technology GmbH held a course about OBS devices (Ocean Bottom Seismometers) for employees of the Seismological Service.

As part of the CROSSNET project, 10 OBS devices (model NAMMU) were acquired, which will be placed on the bottom of the Adriatic Sea, and 5 sets of additional equipment so that the instruments can be placed more than once.

The NAMMU model is made of corrosion-resistant titanium and durable syntactic foam, and the frame offers buoyancy in a shock-resistant and robust package that can easily endure the forces of the sea. Constituent parts of the device are a broadband seismometer, a hydrophone and a data logger. NAMMU can be placed up to a depth of 6,000 meters, and the devices can spend up to 36 months on the seabed with additional batteries.

We thank Mr. Arne Schwenk for the useful lectures and demonstration exercises, and we look forward to future cooperation.