Multibeam bathymetry raw data (Atlas Hydrosweep DS 2 echo sounder entire dataset) of RV METEOR during cruise M51/4

Multibeam bathymetry raw data using the ship's own Atlas Hydrographic Hydrosweep DS 2 multibeam echo sounder was not continuously recorded during RV METEOR cruise M51/4. Data was recorded on 11 days between 2001-12-13 and 2001-12-24. This dataset contains a survey in the Black Sea and in the Sea of Marmara, covering shallow and deep areas. The data are archived at the Federal Maritime and Hydrographic Agency of Germany (Bundesamt für Seeschifffahrt und Hydrographie, BSH) and provided to PANGAEA database for data curation and publication. No ancillary sound velocity profiles (SVP) files from the cruise are archived at the BSH, thus no SVP files are added to this dataset. This publication is conducted within the efforts of the German Marine Research Alliance in the core area 'Data management and Digitalization' (Deutsche Allianz Meeresforschung, DAM). Data are unprocessed and therefore contains incorrect depth measurements (artifacts) without further processing. Note that refraction errors can be expected due to the lack of proper SVP. Overall, it appears that the data quality is rather moderate since the gridded hillshade data showed some obstacles (occasionally the swath width doubles in the Black Sea area). Data can be processed e.g. with the open source software package MB-System (Caress, D. W., and D. N. Chayes, MB-System: Mapping the Seafloor, http://www.mbari.org/products/research-software/mb-system/, 2025).本数据集使用“流星”号科考船（RV METEOR）M51/4航次搭载的Atlas Hydrographic Hydrosweep DS 2型多波束测深仪采集的原始多波束测深数据，并非全程连续记录。有效记录时段为2001年12月13日至2001年12月24日期间的11个作业日。本数据集涵盖黑海与马尔马拉海的调查作业，覆盖浅海及深海区域。数据已存档于德国联邦海事与水文局（Bundesamt für Seeschifffahrt und Hydrographie, BSH），并提交至PANGAEA数据库进行数据整编与发布。本次航次未在BSH存档辅助声速剖面（Sound Velocity Profiles, SVP）相关文件，因此本数据集未包含SVP文件。本数据集的发布工作隶属于德国海洋研究联盟（Deutsche Allianz Meeresforschung, DAM）“数据管理与数字化”核心研究方向的实施范畴。本数据集未经过预处理，因此包含未经校正的错误深度测量值（伪影）。需注意，由于缺乏合适的SVP文件，本数据可能存在折射误差。整体而言，本数据集的数据质量处于中等水平：网格晕渲地形数据显示存在部分异常情况——黑海区域偶尔出现条带覆盖宽度翻倍的现象。可通过开源软件包MB-System对本数据集进行处理（Caress, D. W. 与D. N. Chayes, MB-System: Mapping the Seafloor, http://www.mbari.org/products/research-software/mb-system/, 2025）。