Multibeam bathymetry processed data (Atlas Hydrosweep DS 3 echo sounder entire dataset) of RV POLARSTERN during cruise PS137, Western Gakkel Ridge, Arctic Ocean

Multibeam data were collected during RV Polarstern cruise PS137 (2023-06-21 to 2023-07-31). 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 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 ( ). 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.

多波束数据（Multibeam data）采集于极地stern号考察船（RV Polarstern）PS137航次期间（2023年6月21日至2023年7月31日）。多波束声呐系统为Atlas Hydrographic公司的Hydrosweep DS 3多波束回声测深仪。数据经Caris HIPS软件处理，包括利用温盐深仪（CTD）获取的声速（SV）数据及世界海洋图集18（World Ocean Atlas 18，https://www.ncei.noaa.gov/archive/accession/NCEI-WOA18）进行声速校正、采用TPXO9_atlas_v5（https://www.tpxo.net/global/tpxo9-atlas）进行潮汐校正，以及人工清理。测深数据整合为每日文件，格式为XYZ ASCII（ ）。此外，采用深度相关的单元格大小计算了块中值网格（blockmedian grids）以可视化数据。这些网格不用于科学分析或导航，仅作概览用途。