Raw multibeam backscatter data of the Carnarvon Shelf

Geoscience Australia carried out a marine survey on Carnarvon shelf (WA) in 2008 (SOL4769) to map seabed bathymetry and characterise benthic environments through colocated 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.The "0308_carnarvon_shelf" folder contains raw multibeam backscatter data of the Carnarvorn Shelf. The raw multibeam backscatter data were collected along survey lines using GAs Kongsberg SIMRAD EM3002 in single head configuration from aboard RV Solander.

澳大利亚地球科学局（Geoscience Australia）于2008年在西澳大利亚（WA）的卡纳文陆架（Carnarvon shelf）开展了一项海洋调查（项目编号SOL4769），旨在通过表层沉积物（surface sediments）与底内生物（infauna）的协同采样（colocated sampling）、利用水下拖曳视频（underwater towed video）和静态摄影（stills photography）对底栖生境（benthic habitats）进行观测、以及测量海洋潮汐（ocean tides）和波浪生成流（wave generated currents），来绘制海底地形测量（seabed bathymetry）图并表征底栖环境（benthic environments）。数据与样本由澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）的索兰德号研究船（Research Vessel Solander）采集。海底地形测绘（bathymetric mapping）、采样和视频断面（video transects）在三个调查区域完成，这些区域从宁加洛礁（Ningaloo Reef）向海延伸至陆架边缘（shelf edge），包括：曼杜溪（Mandu Creek，80平方公里）、克洛茨角（Point Cloates，281平方公里）和格纳卢（Gnaraloo，321平方公里）。额外的海底地形测绘（未进行采样或视频观测）在曼杜溪与克洛茨角之间（277平方公里）及曼杜溪以北（79平方公里）区域完成。在克洛茨角调查区域部署了两个海洋学锚系（oceanographic moorings）。调查还对穆伊伦群岛（Muiron Islands）东北部52平方公里的区域进行了测绘和采样。

‘0308_carnarvon_shelf’文件夹包含卡纳文陆架的原始多波束反向散射数据（raw multibeam backscatter data）。这些原始多波束反向散射数据是通过澳大利亚地球科学局的Kongsberg SIMRAD EM3002（单头配置）沿调查线从索兰德号研究船（RV Solander）上采集的。