Towed Video deployments for the Barossa Environmental Baseline Study 2015, Western Australia (ConocoPhillips)

Towed video surveys were carried out across five principle locations of regional interest, including Evans, Tassie and Blackwood Shoals, the closest shoals to the Barossa field, as well as two mid-shelf seabed locations adjacent to Goodrich Bank and Cape Helvetius. In total, 113 towed video transects and 2246 downward facing digital still images were collected at depths of between 11 and 100 metres. The towed platform was deployed over the stern of the vessel, maintained within a metre of the seabed and towed at 1-2 knots (1.5 nominal) until a minimum distance of 1.5 km was covered in a continuous line transect. On the vessel, a computer-based towed video program managed collation of position, depth, and operator-derived habitat classification data, which was captured in real time as an operator interpreted the live video feed, and then archived for subsequent spatial analysis. The seabed biodiversity surveys were undertaken by the Australian Institute of Marine Science (AIMS) in collaboration with ConocoPhillips as part of the Barossa field environmental baseline and marine studies program. The surveys were undertaken between 13 September and 1 October 2015, on the RV Solander. They covered five principal locations of regional interest, including Evans, Tassie and Blackwood Shoals, the closest shoals to the Barossa field, as well as two mid-shelf seabed locations adjacent to Goodrich Bank and Cape Helvetius, relevant to a potential gas export pipeline route.

本数据集对应的拖曳视频调查在五个具有区域研究价值的核心点位开展，包括埃文斯浅滩、塔西浅滩以及距离巴罗萨油田最近的布莱克伍德浅滩，同时覆盖邻近古德里奇海台与赫尔维蒂乌斯角的两个陆架中部海底点位。本次调查总计采集113条拖曳视频样带与2246幅朝下拍摄的数码静态影像，数据采集水深介于11至100米之间。拖曳平台布设于船尾，保持距海底1米以内的作业高度，以1至2节（标称航速1.5节）的航速进行拖曳作业，直至完成至少1.5公里的连续直线样带航程。船上搭载的计算机化拖曳视频管理程序负责整合位置、水深以及操作人员人工判读得到的生境分类数据：操作人员实时解读实时视频画面并同步采集上述数据，随后将所有数据存档以供后续空间分析使用。本次海底生物多样性调查由澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）与康菲石油（ConocoPhillips）合作开展，作为巴罗萨油田环境基线与海洋研究计划的组成部分。调查于2015年9月13日至10月1日期间在索兰德号（RV Solander）研究船上实施，其覆盖的点位选择与潜在天然气出口管道线路密切相关。