Multibeam bathymetry raw data (Atlas Hydrosweep DS 3 echo sounder entire dataset) of RV POLARSTERN during cruise ANT-XXIX/3 (PS81)

Multibeam data were collected during RV Polarstern cruise ANT-XXIX/3 (PS81). Multibeam data are unprocessed and may contain outliers and blunders and should not be used for grid calculations and charting projects without further editing. The dataset contains of files in HYPACK ASCII raw data format (*.HSX + *.RAW) and Teledyne/Atlas multibeam processing format (.asd). HYPACK data files can be processed using e.g. the software packages CARIS HIPS/SIPS or with the open source software package MB-System (Caress et al., MB-System: Mapping the Seafloor,http://www.mbari.org/products/research-software/mb-system/ 2021). Please note, that navigational errors during post-processing of the HYPACK files with MB system is observed using MB-system Version 5.7.5. During transit, data acquisition was partly unsupervised, however during surveys in the research areas data acquisition was continuously monitored. In total, an area of almost 14000 km² was surveyed, mostly covering areas in the Drake Passage, Bransfield Strait and the Weddell Sea. In total, 104x ancillary sound velocity profiles (SVP) derived from CTD casts performed during the cruise were provided to the bathymetry science team. These files are part of this dataset publication. Nevertheless, these SVP files was only applied during post-processing on the data on board, not used during data acquisition. Among other box surveys in the Bransfield Strait and Drake Passage, the dataset contains a survey of the newly discovered "Nachtigaller Shoal" in the Weddell Sea.多波束数据采集自极星号（RV Polarstern）科考航次ANT-XXIX/3（航次标识PS81）。本数据集的多波束数据未经过预处理，可能包含异常值与粗差，未经进一步编辑不得用于网格计算与海图制图项目。数据集包含以下格式的文件：HYPACK ASCII原始数据格式（*.HSX + *.RAW），以及泰莱达因/阿特拉斯（Teledyne/Atlas）多波束处理格式（.asd）。HYPACK格式的数据文件可通过CARIS HIPS/SIPS等商用软件包，或开源软件包MB-System（Caress等人，《MB-System：海底制图》，http://www.mbari.org/products/research-software/mb-system/，2021年）进行处理。请注意：使用MB-System 5.7.5版本对HYPACK格式文件进行后处理时，可能会出现导航误差。 航渡阶段的数据采集部分处于无人值守状态，但在研究区域内的勘测作业全程均有监控。本次勘测总覆盖面积近14000平方千米，主要覆盖德雷克海峡、布兰斯菲尔德海峡与威德尔海海域。 本次航次共获取104份由温盐深（Conductivity Temperature Depth, CTD）剖面采样得到的辅助声速剖面（Sound Velocity Profile, SVP）数据，并提交给水深测绘科学团队。这些文件均属于本数据集的发布内容。不过，这些SVP文件仅在船上开展数据后处理时被应用，并未在数据采集阶段使用。 除布兰斯菲尔德海峡与德雷克海峡内的其他区块勘测任务外，本数据集还包含威德尔海内新发现的‘南蒂加勒滩（Nachtigaller Shoal）’的勘测数据。