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，完成海底水深地形（seabed bathymetry）测绘并表征底栖生境（benthic environments）特征。本次数据采集依托塔斯马尼亚水产与渔业研究所（Tasmania Aquaculture and Fisheries Institute, TAFI）的“挑战者号”研究船完成。本次水深地形测绘覆盖7个调查区域，具体包括：菲欣纳半岛（面积83平方千米，涵盖东海岸及陆架区域）、塔斯曼半岛（面积117平方千米，涵盖东海岸及陆架区域）、亚瑟港及邻近开放海岸（面积17平方千米）、修士群岛（面积41平方千米，位于布尼岛以南）、休恩河下游河口（面积39平方千米）、德恩特雷卡斯托海峡（面积7平方千米，位于布尼岛北部廷德博克附近）以及玛丽亚岛（面积3平方千米，涵盖岛屿西侧区域）。海底视频生境表征工作聚焦所有测绘区域内的基岩礁及其邻近海底范围，但德恩特雷卡斯托海峡与玛丽亚岛两个区域除外。friars_3m为基于本次调查区域经处理的EM3002型反向散射数据，通过CMST-GA MB Process软件生成的布尼岛以南修士群岛反向散射网格ArcGIS图层。本数据集为CERF海洋生物多样性枢纽的共建贡献数据。