IN2019_V04 Coral Sea Bathymetry 10m - 210m Multi-resolution AusSeabed products

This layer group describes multibeam echosounder data collected on RV Investigator voyage IN2019_V04 titled "Hotspot dynamics in the Coral Sea: connections between the Australian plate and deep Earth". The voyage took place between August 07 and September 03, 2019, departing from Cairns (QLD) and arriving in Brisbane (QLD).\n\nThe purpose of this voyage was to to investigate how deep mantle plumes ('hotspots') have influenced the evolution of the Australian plate.\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 Coral Sea produced from the processed EM122 and EM710 bathymetry data.\n\n\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. Initial data conversion and processing was performed using the GSM python batch utility. GPS height was set to GGK and TPU was calculated using values of Measured Tide: 0.5 SV Measured: 0.5 and SV Surface: 0.1. GPS tide was computed using the EGM2008 model. The raw files were analysed for noise and cleaned manually using swath editor.\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.

本图层组涵盖由“调查者号”（RV Investigator）科考航次IN2019_V04采集的多波束测深仪（multibeam echosounder）数据，该航次主题为《珊瑚海热点动力学：澳大利亚板块与地球深部的关联》。本次航次于2019年8月7日至9月3日期间开展，从凯恩斯（昆士兰州）出发，最终抵达布里斯班（昆士兰州）。

本次航次的核心目标为探究地球深部地幔柱（即“热点”）如何影响澳大利亚板块的演化过程。

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过处理的EM122与EM710测深数据生成的、分辨率介于10米至210米之间的珊瑚海水下地形网格数据。

数据谱系：多波束数据由EM系列测深系统以康斯伯格（Kongsberg）专属*.all格式记录，后续转换为可在CARIS HIPS与SIPS 10.3.1版本软件中处理的格式。初始数据转换与处理通过GSM Python批处理工具完成。GPS高程设置为GGK基准，总传播不确定度（TPU）基于以下参数计算：实测潮汐：0.5；实测声速（SV）：0.5；海面声速（SV）：0.1。GPS潮汐通过EGM2008模型解算。原始数据文件已完成噪声分析，并通过条带编辑器（swath editor）进行人工清杂。

随后，基于源自《澳大利亚海底多波束指南v2》（AusSeabed Multibeam guidelines v2）的水深滤波与分辨率匹配准则，通过Python版CARIS批处理脚本将数据网格化为多种分辨率，并进一步对异常值进行检查。本数据集的最终栅格产品存放于L3文件夹中。此外，最终处理后的数据还已按测线导出为GSF与ASCII格式，存放于L2文件夹中。