Methodologies for multibeam seabed hardness mapping in the Timor Sea - Backscatter Local Moran I

This dataset contains backscatter local moran I 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约瑟夫·波拿巴湾东部范迪门海隆（Van Diemen Rise）海底测绘调查所得的反向散射（backscatter）局部莫兰I指数（Local Moran's I）数据。该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）签署谅解备忘录共同开展，分2009年与2010年两个连续年度完成：2009年调查编号为GA-0322（GA）与SOL4934（AIMS），2010年调查编号为GA-0325（GA）与SOL5117（AIMS）。本次调查针对区域内的海底浅滩、水道与平原采集了详细的地质（沉积学、地球化学、地球物理）与生物（大型底栖生物、底内生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间的关联，为生物多样性预测提供支撑。本调查同时为范迪门海隆的底栖生物多样性提供了阿拉弗拉-帝汶海及更广范围澳大利亚北部海域的区域背景数据。本次研究在外陆架至内陆架范围内共设置了四个研究区域。有关本次调查采用的处理技术细节，可参考澳大利亚地质调查局公开记录《利用多波束测深、反向散射与视频数据表征海底底质：澳大利亚北部约瑟夫·波拿巴湾东部案例研究》（GeoCat编号：74092；GA记录编号：2013/11）。