CERF Underwater video from Jervis Bay

Geoscience Australia carried out marine surveys in Jervis Bay (NSW) in 2007, 2008 and 2009 (GA303, GA305, GA309, GA312) to map seabed bathymetry and characterise benthic environments through co-located sampling of surface sediments (for textural and biogeochemical analysis) 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 Defence Science and Technology Organisation (DSTO) Research Vessel Kimbla. Bathymetric mapping, sampling and tide/wave measurement were concentrated in a 3x5 km survey grid (named Darling Road Grid, DRG) within the southern part of the Jervis Bay, incorporating the bay entrance. Additional sampling and stills photography plus bathymetric mapping along transits was undertaken at representative habitat types outside the DRG. The GA0309_0312_JervisBay2008 folder contains video footage; the GA0326_JervisBay2009 folder contains still images; and the files are the video characterisation datasets. Underwater towed-video footage and still images represent the raw data. Video characterisation datasets include substrata types and the presence/absence of benthic taxa. This dataset is a contribution to the CERF Marine Biodiversity Hub.

澳大利亚地质调查局（Geoscience Australia）于2007、2008及2009年在新南威尔士州杰维斯湾开展了编号为GA303、GA305、GA309、GA312的海洋勘测工作，旨在绘制海底水深地形，并通过同步采集表层沉积物（用于纹理特征与生物地球化学分析）、底内生物样本，结合水下拖曳式视频与静态摄影观测底栖生境，同时测量海洋潮汐与波浪诱发海流，以此表征底栖环境特征。
本次勘测的数据与样本采集依托国防科学技术组织（Defence Science and Technology Organisation, DSTO）的“金布拉号”研究船（Research Vessel Kimbla）完成。
水深测绘、采样及潮汐/波浪测量作业主要集中在杰维斯湾南部一片3×5公里的勘测网格（命名为达令路网格，Darling Road Grid, DRG），该区域涵盖海湾入口航道。
此外，项目组还在达令路网格外的典型生境类型沿线开展了补充采样、静态摄影及过境航线水深测绘工作。
GA0309_0312_JervisBay2008文件夹存储视频素材；GA0326_JervisBay2009文件夹存储静态影像，二者均属于视频表征数据集。
水下拖曳式视频素材与静态摄影影像为原始数据。
视频表征数据集涵盖底质类型与底栖类群的存在与否情况。
本数据集是CERF海洋生物多样性枢纽（CERF Marine Biodiversity Hub）的贡献成果之一。