IN2015_E01 Southern Ocean Bathymetry 10m - 210m Multi-resolution AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2015_E01, titled "Cold Water Trial Voyage (including atmospherics)". The voyage took place between January 29 and February 18, 2015 departing from Hobart (TAS) and arriving in Hobart (TAS).\n\nThe purpose of the voyage was to test Investigator equipment to 65° south. EM122 and EM710 were calibrated in transit in Storm Bay and subsequently used to acquire seafloor bathymetry and backscatter information from Hobart to Antarctic waters.\n\nThis dataset is published with the permission of CSIRO. Not to be used for navigational purposes.\n\nThe dataset contains bathymetry grids of 10m to 210m resolution of the Southern Ocean, produced from the processed EM122 and EM710 bathymetry data.\nLineage: Processing was undertaken using Caris HIPS and SIPS 10.3. Swath editing was followed by subset editing.\n\nThe data was then gridded at multiple resolutions in python Caris batch script using a Depth filter Vs Resolution guideline derived from AusSeabed Multibeam guidelines v2 and further inspected for outliers. Final raster products are available in L3 folder of this collection. Final processed data were also exported per line as GSF and ASCII format and available in the L2 folder of this collection.\n

本图层组收录的是"调查号"（RV Investigator）科考船采集的多波束测深声呐数据，对应航次为IN2015_E01，主题为"冷水试验航次（含大气环境数据）"。本次航次于2015年1月29日至2月18日执行，往返均以塔斯马尼亚州霍巴特（TAS）为起止港。

本次航次的核心任务为在南纬65°海域对"调查号"科考船搭载的设备进行性能验证。EM122与EM710型多波束系统在风暴湾（Storm Bay）航渡期间完成校准，随后用于采集从霍巴特至南极海域的海底地形（水深）与反向散射数据。

本数据集经澳大利亚联邦科学与工业研究组织（CSIRO）许可发布，不得用于导航用途。

本数据集包含基于预处理后的EM122与EM710水深数据生成的南大洋海域水深栅格数据，分辨率覆盖10米至210米。

数据谱系：本次处理采用Caris HIPS与SIPS 10.3版本软件完成，先执行条带编辑，再进行子集裁剪编辑。

随后基于澳大利亚海底多波束指南v2（AusSeabed Multibeam guidelines v2）制定的水深滤波与分辨率匹配准则，通过Python编写的Caris批处理脚本对数据进行多分辨率网格化处理，并进一步筛查异常值。本数据集的最终栅格成果存放在L3文件夹中；此外，经最终处理的航线数据还将以GSF与ASCII格式按航线条目导出，并存放在L2文件夹中。