This is the sub-bottom profiler data collected during cruise MSM131 using the hull-mounted parametric sub-bottom profiler Atlas Parasound P70. This data collection includes the transits from Reykjavík to the Svalbard region, the surveys, and the transit back to Emden. The system utilises two high-intensity waves with frequencies of 18-20 kHz (primary high frequency; PHF) and 22-24 kHz to create a secondary high (about 40-42 kHz) and secondary low frequency (SLF) of about 4 kHz. The PHF is used to record the water column, while the SLP records the sub-bottom data. The system opening angle is of 4 by 5 degrees. A Surface Sound Velocity sensor was used in real time to correct the data transmission, and for the water column a static values of 1500 m/s was used. Data was logged using the software Atlas Parastore and stored in raw .ASD files. Additional files were created in .PS3 and/or .SEGY formats, but their data is dependent on the settings and parameters used in the system.

These data should not be used for navigational purposes.Data publishing was realized by Christian dos Santos Ferreira, MARUM - Center for Marine Environmental Sciences (University of Bremen).