IN2018_E01 Tasmanian Coast Bathymetry 10m - 210m Multi-resolution AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2018_E01 titled "MNF sea trials". The voyage took place between June 9 and June 11, 2018, departing from Hobart (TAS) and arriving in Hobart (TAS).\n\nThe purpose of this voyage was to complete a Calibration of all six frequencies of EK60 split beam echosounder and perform a Sea Acceptance trial on the newly purchased Triaxus.\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 Tasmanian Coast produced from the processed EM710 bathymetry data.\nLineage: Multibeam data was logged from the EM’s in Kongsberg’s proprietary *.all format and was converted to be processed within Caris HIPS and SIPS version 10.3.1. Once the raw files were converted into the HIPS and SIPS format the data was analysed for noise. Zerotide was applied, and the lines were merged using the vessel file appropriate for the EM710. The data was then gridded at the highest resolution possible and further inspected for outliers.\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 are available in the L2 folder of this collection.

本图层组描述了由“调查者号”科考船（RV Investigator）执行的航次IN2018_E01中采集的多波束测深声呐数据，该航次标题为“MNF海试”（MNF sea trials）。本次航次于2018年6月9日至6月11日开展，从塔斯马尼亚州霍巴特港出发并最终返回霍巴特港。

本次航次的核心任务为完成EK60分波束测深声呐全部6个工作频段的校准工作，并对新采购的Triaxus设备开展海上验收试验。

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。

本数据集包含基于经处理的EM710多波束测深数据生成的塔斯马尼亚沿岸水深栅格产品，分辨率覆盖10米至210米区间。

数据溯源说明：多波束原始数据以康斯伯格（Kongsberg）专有格式*.all存储，随后被转换为可在Caris HIPS and SIPS 10.3.1版本中处理的格式。将原始文件转换至HIPS与SIPS格式后，研究人员对数据开展噪声分析，应用Zerotide校正，并使用适配EM710的船舶参数文件完成测线合并。随后以最高可行分辨率对数据进行网格化处理，并初步排查异常值。

随后，研究人员基于《AusSeabed多波束指南v2》（AusSeabed Multibeam guidelines v2）制定的水深-分辨率筛选准则，通过Python编写的Caris批处理脚本，将数据以多种分辨率进行网格化，并再次排查异常值。本合集的L3文件夹中提供最终栅格产品。此外，已按测线将最终处理后的数据导出为GSF与ASCII格式，存储于本合集的L2文件夹中。