Multibeam bathymetry processed data (Atlas Hydrosweep DS 3 echo sounder entire dataset) of RV POLARSTERN during cruise PS140, Southern Ocean

• Main Authors: Schulze Tenberge, Yvonne, Lemire, Annie, Andreas, Pascal, Dreutter, Simon, Dorschel, Boris, Gutjahr, Marcus
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: Area; Bathymetry; Binary Object; Binary Object (File Size); Binary Object (Media Type); DS3; EASI-2; Elevation; maximum; minimum; File content; Horizontal datum; projection stored in file; Latitude; northbound; southbound; Longitude; eastbound; westbound; Multibeam; Number of depth soundings; Polarstern; PS140; PS140_0_Underway-28; Raster cell size; Southern Ocean; Swath-mapping system Atlas Hydrosweep DS-3; Vertical datum
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.967619; https://doi.org/10.1594/PANGAEA.967619

Multibeam data were collected during RV Polarstern cruise PS140 (2023-11-25 to 2024-02-01). Multibeam sonar system was Atlas Hydrographic Hydrosweep DS 3 multibeam echo sounder. Data are processed with Caris HIPS, including sound velocity correction with SV data from SVPs, CTDs and World Ocean Atlas 18 (https://www.ncei.noaa.gov/archive/accession/NCEI-WOA18), tidal correction with TPXO9_atlas_v5 (https://www.tpxo.net/global/tpxo9-atlas), and manual cleaning. The soundings are combined in daily files, the format is XYZ ASCII (<Lon> <Lat> <Depth in meters, positive up, relative to mean sea level>). Additional blockmedian grids have been computed with depth dependent cell size to visualize the data. These grids are not meant for scientific analysis or navigation, but for overview purposes only.