Swath sonar bathymetry during POLARSTERN cruise ANT-XV/2 (PS47) with links to multibeam raw data files

Multibeam data were measured during R/V Polarstern cruise ANT-XV/2 along track lines of approximately 10200 NM total length during transits, surveys and partly during stationary work, mainly in the Scotia Sea and the Weddell Sea. Areal multibeam surveys were performed in the vicinity of the South Shetland trench, the Bransfield Basin, the South Sandwich trench, and off the Ekstrom Ice Shelf for time periods of three to eight days. The multibeam sonar system Hydrosweep DS-2 was operated using 59 beams and 90° aperture angle, in some shallow areas 120°. The refraction correction was achieved utilizing sound velocity profiles sampled during the cruise, and 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.

本数据集的多波束数据采集于极星号（R/V Polarstern）ANT-XV/2科考航次，航迹总长度约10200海里，覆盖航行、测量及部分定点作业时段，主要作业区域为斯科舍海（Scotia Sea）与威德尔海（Weddell Sea）。多波束面积测量作业覆盖南设得兰海沟（South Shetland Trench）周边、布兰斯菲尔德盆地（Bransfield Basin）、南桑威奇海沟（South Sandwich Trench）及埃克斯特龙冰架（Ekstrom Ice Shelf）外海区域，作业时长为3至8天。本次采集采用的多波束声呐系统为Hydrosweep DS-2，配置为59个波束、开角90°，部分浅水区采用120°开角。数据折射校正通过航次采集的声速剖面完成，并结合系统自带的交叉扇形校准程序实现。在恶劣天气或不利海冰条件下，数据质量可能有所下降。本数据集包含未经处理的原始数据，因此可能存在深度与位置相关的误差及粗差。