Methodologies for multibeam seabed hardness mapping in the Timor Sea - Hardness Prediction Grids

This dataset contains hardness prediction 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海底测绘调查获取的硬度预测数据。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）根据合作备忘录开展，于2009年与2010年连续两年进行：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）。调查获取了浅滩、水道与平原的详细地质（沉积学、地球化学、地球物理）及生物（大型底栖生物、内栖生物多样性与群落结构）数据，旨在探究物理环境与相关生物群落的关联，以服务生物多样性预测研究。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-帝汶海及更广范围北澳大利亚海域的区域背景数据。研究覆盖了从外陆架到内陆架的4个研究区域。有关本次调查采用的处理技术细节，可参考澳大利亚地球科学局存档文献《利用多波束测深、背散射与视频数据表征海底底质：以北澳大利亚约瑟夫·波拿巴湾东部为例》（GeoCat编号：74092；GA存档编号：2013/11）。