Water column raw data (Kongsberg EM 122 working area dataset) of RV MARIA S. MERIAN during cruise MSM114/2

• Main Authors: Lobo, Bertrand, Nischik, Timo, Nitsche, Frank
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: ARC; Bathymetry; Binary Object; Binary Object (File Size); Binary Object (Media Type); Comment; Data file recording distance; Data file recording duration; DATE/TIME; ELEVATION; EM122; EM122 multibeam echosounder; Event label; Extracted from file; Extracted with MB-System; File content; Kongsberg datagram raw file name; LATITUDE; LONGITUDE; Maria S. Merian; MSM114/2; MSM114/2_0_Underway-5; Multibeam Echosounder; Number of pings; Ship speed; Start of data file; depth; heading; Start of data file recording; Stop of data file; Stop of data file recording; South Atlantic Ocean
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.960134; https://doi.org/10.1594/PANGAEA.960134

The multibeam echo sounder Kongsberg EM122 was recording water column data from 25.01.2023 (07:21 UTC) to the 20.02.2023 (15:55 UTC) outside EEZs during the transit from Mindelo (Cabo Verde) to Punta Arenas (Chile). It operates with an acoustic frequency of about 12 kHz and has a beam opening of 2° x 2°. During MSM114/2 the fan opening angle was set between 110°- 120° resulting in a swath width of about 15 km in 5,000 m water depth. The dual-swath mode was used, resulting in up to 2 x 288 beams per ping. The raw and unprocessed water column data is stored in Kongsberg format (*.wcd) each containing up to 30 min of data. During the acquisition the echo sounder was monitored as well as settings and filter adjusted according to the environment. Additionally, a small survey in the South Atlantic Ocean was performed on the 13.02.2023 south of the Cruzeiro do Sul Rift.