Methodologies for multibeam seabed hardness mapping in the Timor Sea - Backscatter Homogeneity

This dataset contains backscatter homogeneity data from seabed mapping surveys on the Van Diemen Rise in the eastern Joseph Bonaparte Gulf of the Timor Sea. The survey was conducted under a Memorandum of Understanding between Geoscience Australia (GA) and the Australian Institute of Marine Science (AIMS) in two consecutive years 2009 (GA survey number GA-0322 and AIMS survey number SOL4934) and 2010 (GA survey number GA-0325 and AIMS survey number SOL5117). The surveys obtained detailed geological (sedimentological, geochemical, geophysical) and biological data (macro-benthic and infaunal diversity, community structure) for the banks, channels and plains to investigate relationships between the physical environment and associated biota for biodiversity prediction. The surveys also provide Arafura-Timor Sea, and wider northern Australian marine region context for the benthic biodiversity of the Van Diemen Rise. Four study areas were investigated across the outer to inner shelf. Refer to the GA record 'Methodologies for seabed substrate characterisation using multibeam bathymetry, backscatter, and video data: A case study for the Eastern Joseph Bonaparte Gulf, Northern Australia' for further information on processing techniques applied (GeoCat: 74092; GA Record: 2013/11).

本数据集包含帝汶海东部约瑟夫·波拿巴湾范迪门海隆（Van Diemen Rise）海底测绘调查的反向散射均匀性数据。该调查依据澳大利亚地质科学局（Geoscience Australia，GA）与澳大利亚海洋科学研究所（Australian Institute of Marine Science，AIMS）的谅解备忘录，于2009年（GA调查编号GA-0322、AIMS调查编号SOL4934）和2010年（GA调查编号GA-0325、AIMS调查编号SOL5117）连续两年开展。调查获取了海脊、水道和平原的详细地质数据（沉积学、地球化学、地球物理学）与生物数据（大型底栖生物及内栖生物多样性、群落结构），旨在探究物理环境与相关生物群之间的关系，以支撑生物多样性预测。此外，这些调查还为范迪门海隆的底栖生物多样性提供了阿拉弗拉-帝汶海及更广阔的澳大利亚北部海洋区域背景。研究覆盖了从外陆架到内陆架的四个区域。有关所用处理技术的详细信息，请参阅GA记录《利用多波束测深、反向散射与视频数据表征海底基质的方法：澳大利亚北部东部约瑟夫·波拿巴湾案例研究》（GeoCat编号：74092；GA记录编号：2013/11）。