Backscatter grid of the hummock patch in central Darling Road survey area of 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 colocated 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 wavegenerated 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. hummocks_15cm is an ArcGIS layer of the backscatter grid of the hummock patch in central Darling Road survey area produced from EM3002 and EM3002D backscatter data of the survey area using the Fledermaus Geocoder This dataset is a contribution to the CERF Marine Biodiversity Hub.

澳大利亚地质科学局（Geoscience Australia）于2007、2008及2009年在新南威尔士州杰维斯湾开展了海洋勘测（项目编号GA303、GA305、GA309、GA312），旨在绘制海床水深图，并通过同位采集表层沉积物（用于纹理与生物地球化学分析）及底内生物样品、利用水下拖曳式视频与静态摄影观测底栖生境、测量海洋潮汐与波浪生成流，以表征底栖环境。本次数据与样品采集依托国防科学技术组织（Defence Science and Technology Organisation, DSTO）的“Kimbla”号研究船完成。水深测绘、样品采集以及潮汐/波浪测量工作集中于杰维斯湾南部一块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。此外，团队还在达令路网格外的典型生境类型沿线开展了补充采样、静态摄影及过境水深测绘。hummocks_15cm是一个ArcGIS图层，其基于勘测区域的EM3002与EM3002D反向散射数据，通过Fledermaus Geocoder软件处理生成，对应达令路勘测区域中部穹丘斑块的反向散射网格。本数据集为CERF海洋生物多样性中心（CERF Marine Biodiversity Hub）的贡献项目成果。