Methodologies for multibeam seabed hardness mapping in the Timor Sea - Slope

This dataset contains topographic slope data (in degree) 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约瑟夫·波拿巴湾东部范迪门海隆（Van Diemen Rise）海底测绘调查获取的地形坡度数据（单位：度）。本次调查由澳大利亚地球科学局（Geoscience Australia, GA）与澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）签署的谅解备忘录支持，于2009年与2010年连续两年开展：2009年的调查编号为GA-0322（GA）与SOL4934（AIMS），2010年的调查编号为GA-0325（GA）与SOL5117（AIMS）。本次调查获取了研究区域内浅滩、水道与平原的详细地质（沉积学、地球化学、地球物理）与生物（大型底栖生物、底内动物多样性及群落结构）数据，旨在探究物理环境与相关生物群落之间的关联，以支撑生物多样性预测研究。此外，本次调查还为范迪门海隆的底栖生物多样性研究提供了阿拉弗拉-帝汶海及更广范围的澳大利亚北部海域区域背景。本次研究覆盖从外陆架到内陆架的4个调查区域。如需了解本次调查所采用的处理技术的详细信息，请参阅澳大利亚地球科学局的相关记录：《利用多波束测深、反向散射与视频数据表征海底底质的方法——以北澳大利亚东部约瑟夫·波拿巴湾为例》，其GeoCat编号为74092，GA记录编号为2013/11。