Methodologies for multibeam seabed hardness mapping in the Timor Sea - Planar Curvature

This dataset contains planar curvature 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（Timor Sea）约瑟夫·波拿巴湾（Joseph Bonaparte Gulf）东部海域范迪门海隆（Van Diemen Rise）的海底测绘调查所得平面曲率数据。本次调查由澳大利亚地质调查局（Geoscience Australia, GA）与澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）依据双方签署的谅解备忘录开展，分2009年与2010年两个连续年度实施：2009年对应GA编号GA-0322、AIMS编号SOL4934；2010年对应GA编号GA-0325、AIMS编号SOL5117。此次调查针对浅滩、水道与海底平原区域采集了详细的地质（沉积学、地球化学、地球物理）与生物学数据（大型底栖生物多样性、内生底栖生物多样性及群落结构），旨在探究物理环境与相关生物群落之间的关联，为生物多样性预测提供研究支撑。本次调查同时为范迪门海隆的底栖生物多样性研究提供了阿拉弗拉-帝汶海乃至北澳大利亚更广海域的区域背景。本次调查在外陆架至内陆架范围内共设置4个研究区域开展工作。如需了解本次调查采用的数据处理技术细节，请参考澳大利亚地质调查局公开记录《利用多波束测深、后向散射与视频数据表征海底底质的方法：以北澳大利亚约瑟夫·波拿巴湾东部为例》（GeoCat编号：74092；GA记录编号：2013/11）。