Gridded bathymetry from multibeam echosounder EM12S data of the cruise TTR6/2 (1996)

Bathymetry based on data recorded during TTR6 between 05.07.1996 and 20.08.1996 in the Black Sea. In the central Black Sea, the aim of TTR-6 the investigation was a bathymetric map of a field of mud volcanoes known from the previous TTR cruises, during transit. In the Sorokin Trough, where gas hydrates were earlier obtained from sea bottom sediments the primary goals concerned the elucidation of the structure of clay diapiric folds and the searching for mud volcanoes and other evidence for fluid flux through the seafloor. The task of looking for the seafloor manifestation of deep fluid emanation was set in the Pallas Uplift area. The EM12s surveying on the Caucasian margin was aimed at the construction of the first detailed bathymetric map of this area.

Swath sonar bathymetry during POLARSTERN cruise ANT-XXVI/3 (PS75) with links to multibeam raw data files

Multibeam data were collected during R/V Polarstern cruise ANT-XXVI/3 along track lines of about 10,400 NM total length along transits, survey profiles and during stationary work. Departing in New Zealand the ship passed Pacific Antarctic Ridge heading to Ross Sea. Main working area was the Amundsen Sea and Bellingshausen Sea. Recorded bathymetry is supplementing existing tracks e.g. of R.V. James Clark Ross and R.V. Nathaniel B. Palmer. The refraction correction was achieved utilizing CTD profiles or by the system's own cross fan calibration. The quality of data might be reduced during bad weather periods or adverse sea ice conditions. The dataset contains raw data that are not processed and thus may contain errors and blunders in depth and position.

Swath sonar bathymetry during POLARSTERN cruise ANT-XXVI/1 (PS75) with links to multibeam raw data files

Multibeam data were collected during R/V Polarstern cruise ANT-XXVI/1. Data recording was executed in northern Atlantic from Bay of Biscay to the Canary Islands for calibration of sonar system Hydrosweep DS2. Data should therefore not be used for high quality grid calculations and charting projects.

Swath sonar bathymetry during POLARSTERN cruise ANT-XVI/4 (PS53) with links to multibeam raw data files

Multibeam data were collected without operator supervision on R/V Polarstern cruise ANT-XVI/4 along track lines of 6385 NM total length. Data were achieved during transits and stationary work on the route from Cape Town to Bremerhaven via the Cape Verde Islands and the Canary Islands. The multibeam sonar system Hydrosweep DS-2 was operated using 59 beams and 90° aperture angle. The quality of data might be reduced during bad weather periods or adverse sea ice conditions. The dataset contains raw data that are not processed and thus may contain errors and blunders in depth and position.