IN2019_V03 Indian Ocean Bathymetry 10m - 210m Multi-Resolution AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2019_V03, titled: "A coupled bio-physical, ecosystem-scale, examination of Australia’s International Indian Ocean Expedition line". The voyage took place between May 14 and June 14, 2019 departing from Fremantle (WA) and arriving in Fremantle (WA).\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 Indian Ocean produced from the processed EM122 and EM710 bathymetry data.\n\n\n\n\nLineage: Multibeam data was logged from the EMs in Kongsberg’s proprietary *.all format and was converted to be processed within CARIS HIPS and SIPS version 10.3.1. Initial data conversion and processing was performed using the python batch utility. As soon as files were copied to the processing PC from the SIS acquisition machine, the data were automatically converted to the HIPS data format and merged using zero tide and the vessel file appropriate for either the EM122 or EM710.\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.本图层组收录的是“探索者”号（RV Investigator）海洋调查船IN2019_V03航次采集的多波束测深数据（multibeam echosounder data），该航次主题为“澳大利亚国际印度洋考察断面的生物-物理耦合生态系统尺度研究”。本航次于2019年5月14日至6月14日开展，从西澳大利亚州弗里曼特尔港出发并返回该港。 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，严禁用于导航用途。 本数据集包含基于经处理的EM122与EM710型多波束测深数据生成的印度洋海域水深栅格产品，分辨率覆盖10米至210米。 数据溯源：多波束数据以康斯伯格（Kongsberg）专有*.all格式记录，需先完成格式转换以适配CARIS HIPS与SIPS 10.3.1版本软件的处理需求。初始数据转换与处理工作通过Python批量工具完成：当数据从SIS采集机拷贝至处理工作站后，系统将自动将其转换为HIPS数据格式，并结合适配EM122或EM710的零潮汐文件与船舶文件完成数据合并。 随后基于《澳大利亚海底多波束指南v2（AusSeabed Multibeam guidelines v2）》制定的“水深滤波器-分辨率”准则，通过Python CARIS批量脚本以多种分辨率对数据进行网格化处理，并进一步筛查异常值。本合集的L3文件夹中存放最终栅格产品。此外，经最终处理的原始数据还将按测线断面导出为GSF与ASCII格式文件，存放于本合集的L2文件夹中。