Multibeam bathymetry processed data (Kongsberg EM 122 transit dataset) of RV SONNE during cruise SO292/2, North Pacific Ocean ...

• Main Authors: Lütjens, Mona, DMello, Gavin, Felgendreher, Meret, Menapace, Walter, Sternberg, Harald
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Bathymetry; Pacific Ocean; Binary Object; Binary Object Media Type; Binary Object File Size; Raster cell size; File content; Horizontal datum; Longitude, westbound; Longitude, eastbound; Latitude, southbound; Latitude, northbound; UTM Zone, Universal Transverse Mercator; UTM Easting, Universal Transverse Mercator; UTM Northing, Universal Transverse Mercator; Elevation, minimum; Elevation, maximum; Swath-mapping system Simrad EM122 Kongsberg Maritime AS; SO292/2; Sonne_2; Kongsberg; Pacific; Alaska; Aleutian Islands
• Online Access: https://dx.doi.org/10.1594/pangaea.956750; https://doi.pangaea.de/10.1594/PANGAEA.956750

The multibeam echo sounder (MBES) data was collected from the 10.07.2022 (09:24 UTC) when leaving the Northern Mariana EEZ to the 18.07.2022 (00:24 UTC) before entering the EEZ close to the Aleutian Islands, Alaska with the Kongsberg EM122 on RV SONNE in the North Pacific Ocean (SO292/2). The deep-water MBES EM122 operates with an acoustic frequency of 12 kHz and a beam opening angle of 0.5° x 1°. The time, motion and position data (WGS84, geographic) was measured by the Kongsberg Seapath system on board. During the acquisition the echo sounder was monitored as well as settings and filter adjusted according to the environment. The transit speed was up to 13 knots. The swath opening angle was set between 60° and 65° resulting in a swath width of about 22 km in 5,000 m water depth. The Ping Mode was set to Auto, which enabled the system to use continuous wave pulses in shallow modes and frequency modulated pulses in deep modes. Further, high density and dual swath mode were continuously applied. As the data ... : These data should not be used for navigational purposes. ...