Processed multibeam backscatter data of the Carnarvorn Shelf

Geoscience Australia carried out a marine survey on Carnarvon shelf (WA) in 2008 (SOL4769) to map seabed bathymetry and characterise benthic environments through co-located sampling of surface sediments and infauna, observation of benthic habitats using underwater towed video and stills photography, and measurement of ocean tides and wave-generated currents. Data and samples were acquired using the Australian Institute of Marine Science (AIMS) Research Vessel Solander. Bathymetric mapping, sampling and video transects were completed in three survey areas that extended seaward from Ningaloo Reef to the shelf edge, including: Mandu Creek (80 sq km); Point Cloates (281 sq km), and; Gnaraloo (321 sq km). Additional bathymetric mapping (but no sampling or video) was completed between Mandu creek and Point Cloates, covering 277 sq km and north of Mandu Creek, covering 79 sq km. Two oceanographic moorings were deployed in the Point Cloates survey area. The survey also mapped and sampled an area to the northeast of the Muiron Islands covering 52 sq km..

0308_carnarvon_shelf contains processed multibeam backscatter data of the Carnarvorn Shelf. The SIMRAD EM3002 multibeam backscatter data were processed using the CMST-GA MB Process, a multibeam processing toolbox co-developed by Geoscience Australia and Curtin University of Technology.

澳大利亚地质调查局（Geoscience Australia）于2008年在西澳大利亚州（WA）的卡那封陆架（Carnarvon shelf）开展了编号为SOL4769的海洋调查，旨在通过同步采集表层沉积物与底内生物样品、采用水下拖曳视频及静态摄影观测底栖生境、测量海洋潮汐与波浪诱导流，完成海底水深测绘并表征底栖环境特征。本次调查的数据与样品采集工作由澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）的“索兰德号”（Solander）研究船执行。

本次调查覆盖三个从宁格罗礁向陆架边缘延伸的海域，完成了水深测绘、样品采集与视频断面作业，分别为：曼杜溪（80平方千米）、克洛阿特斯角（281平方千米）以及纳拉鲁（321平方千米）。此外，调查还在曼杜溪与克洛阿特斯角之间（覆盖277平方千米）以及曼杜溪以北区域（覆盖79平方千米）开展了额外的水深测绘工作，但未在此区域进行样品采集与视频作业。在克洛阿特斯角调查海域内，共部署了两套海洋学锚系设备。本次调查同时对缪伦群岛东北部一片面积为52平方千米的海域开展了测绘与样品采集工作。

0308_carnarvon_shelf数据集包含卡那封陆架经处理的多波束反向散射数据。本次研究所用的SIMRAD EM3002型多波束反向散射数据，是通过CMST-GA MB Process（一款由澳大利亚地质调查局与科廷科技大学联合开发的多波束处理工具箱）完成处理的。