Backscatter grid of the Friars islets, south of Bruny Island

Geoscience Australia carried out marine surveys in southeast Tasmania in 2008 and 2009 (GA0315) to map seabed bathymetry and characterise benthic environments through observation of habitats using underwater towed video. Data was acquired using the Tasmania Aquaculture and Fisheries Institute (TAFI) Research Vessel Challenger. Bathymetric mapping was undertaken in seven survey areas, including: Freycinet Pensinula (83 sq km, east coast and shelf); Tasman Peninsula (117 sq km, east coast and shelf); Port Arthur and adjacent open coast (17 sq km); The Friars (41 sq km, south of Bruny Island); lower Huon River estuary (39 sq km); D Entrecastreaux Channel (7 sq km, at Tinderbox north of Bruny Island), and; Maria Island (3 sq km, western side). Video characterisations of the seabed concentrated on areas of bedrock reef and adjacent seabed in all mapped areas, except for D Entrecastreaux Channel and Maria Island. friars_3m is an ArcGIS layer of the backscatter grid of the Friars islets, south of Bruny Island produced from the processed EM3002 backscatter data of the survey area using the CMST-GA MB Process This dataset is a contribution to the CERF Marine Biodiversity Hub.

澳大利亚地质调查局（Geoscience Australia）于2008年和2009年在塔斯马尼亚东南部开展了编号为GA0315的海洋调查，旨在通过水下拖曳视频观测生境，绘制海底测深图并表征底栖环境。本次调查数据由塔斯马尼亚水产与渔业研究所（Tasmania Aquaculture and Fisheries Institute, TAFI）的“挑战者号”研究船采集获取。
此次海底测深测绘覆盖7个调查区块，具体包括：菲欣纳半岛（Freycinet Peninsula，83平方公里，东海岸及陆架区域）、塔斯曼半岛（Tasman Peninsula，117平方公里，东海岸及陆架区域）、阿瑟港及邻近开放海岸（17平方公里）、修士群岛（The Friars，41平方公里，布鲁尼岛以南区域）、休恩河下游河口（39平方公里）、德恩特雷卡斯托海峡（D'Entrecasteaux Channel，7平方公里，位于布鲁尼岛以北的廷德博克斯（Tinderbox）区域）以及玛丽亚岛（Maria Island，3平方公里，西侧区域）。
海底生境视频表征工作覆盖所有测绘区块的基岩礁及邻近海底区域，但德恩特雷卡斯托海峡与玛丽亚岛两个区块除外。
图层friars_3m为ArcGIS图层，其数据为布鲁尼岛以南修士群岛的后散射网格，由该调查区域经处理后的EM3002后散射数据通过CMST-GA MB多波束处理流程生成。
本数据集为CERF海洋生物多样性枢纽（CERF Marine Biodiversity Hub）的贡献成果之一。