GA339_SOL5650 Oceanic Shoals survey marine underwater video and still images

The Oceanic Shoals survey (SOL5650, GA survey 339) was conducted on the R.V. Solander in collaboration with Geoscience Australia, the Australian Institute of Marine Science (AIMS), University of Western Australia and the Museum and Art Gallery of the Northern Territory between 12 September - 5 October, 2012. During the survey, underwater video and still images were acquired using the AIMS towed camera system. Video was acquired using a forward-facing camera (files available in sub-folder 'NERP_TOWVID_VIDEOS'), and still images were acquired with a downward-facing camera, with images taken every 10 seconds (files available in sub-folder 'NERP_TOWVID_STILLS'). Video was converted from tapes to compressed .avi files. Video was characterised onboard in real-time using the AIMS' Towvid characterisation scheme. These characterisations are available in sub-folder 'NERP_TOWVID_CSVs'. Location of ship movement during camera and sled transects are included in the spreadsheet 'SOL5650_GA0339_Stations.xls'. Exact location of the camera during deployment is recorded via the USBL and can be found in sub-folder 'NERP_USBL'. Video and associated still images were not acquired from STN13CAM09. Video is not available from 27CAM18 and 28CAM19 (these stations were not on the digital files supplied by AIMS), although still images and Towvid characterisations were supplied. Video Tape 12 is the same as Tape 11, as supplied by AIMS. All video files were renamed at GA with a prefix listing stations contained on a given tape/file. In addition to underwater imagery, laboratory and deck photos were taken of specimens collected from the benthic sled. These are included in the sub-folder 'NERP_SPECIMEN_PHOTOS' Video and image files or associated parent folders are named by station number, gear code (CAM = underwater camera system, BS = benthic sled) and then the deployment number. For example '48CAM35' represents a video transect from Station 48 that was the 35th video transect on the survey. Data is presented here exactly as acquired onboard and converted by the AIMS, and positional accuracy or image quality has not been verified.

海洋浅滩调查（SOL5650，GA勘测339）由“索兰德号”（R.V. Solander）科考船执行，合作方包括澳大利亚地质调查局（Geoscience Australia）、澳大利亚海洋科学研究所（Australian Institute of Marine Science, AIMS）、西澳大利亚大学以及北领地博物馆与美术馆，实施时间为2012年9月12日至10月5日。本次调查采用AIMS的拖曳式摄像系统采集水下视频与静态图像：前视摄像头采集视频，视频文件存储于子文件夹'NERP_TOWVID_VIDEOS'；下视摄像头以每10秒一张的速率拍摄静态图像，相关文件存储于子文件夹'NERP_TOWVID_STILLS'。视频原始素材由录像带转换为压缩.avi格式文件。调查船载平台采用AIMS的Towvid表征方案对视频进行实时特征标注，该标注数据集存储于子文件夹'NERP_TOWVID_CSVs'。摄像头与底拖雪橇航次的船舶航行位置信息收录于电子表格'SOL5650_GA0339_Stations.xls'。摄像头部署阶段的精确位置通过超短基线定位系统（USBL）记录，相关数据存储于子文件夹'NERP_USBL'。STN13CAM09站点未采集视频与静态图像；27CAM18与28CAM19站点无可用视频文件（该站点未包含在AIMS提供的数字文件包中），但该站点的静态图像与Towvid标注数据均已提供。录像带12与AIMS提供的录像带11内容完全一致。所有视频文件均已由GA完成重命名，文件名前缀标注了该磁带/文件所包含的站点编号。除水下影像数据外，本次调查还对底拖雪橇采集的底栖生物标本拍摄了实验室与甲板现场照片，相关照片存储于子文件夹'NERP_SPECIMEN_PHOTOS'。视频与图像文件及其父文件夹均采用站点编号、设备代码（CAM代表水下摄像系统，BS代表底拖雪橇）及部署序号进行命名，例如'48CAM35'代表站点48的第35次水下摄像航次。本次发布的数据完全按照船载采集格式及AIMS的转换结果呈现，未对位置精度与图像质量进行验证。