Backscatter grid of the northeastern block of the 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. north2_1m is an ArcGIS layer of the backscatter grid of the northeastern block of the Jervis Bay produced from the processed EM3002 and EM3002D backscatter data of the survey area using the CMST-GA MB Process This dataset is a contribution to the CERF Marine Biodiversity Hub.

澳大利亚地球科学局于2007、2008及2009年在杰维斯湾（新南威尔士州，NSW）开展了海洋调查（编号GA303、GA305、GA309、GA312），旨在通过表层沉积物协同采样（colocated sampling）（用于纹理与生物地球化学分析）、底内动物（infauna）采样、水下拖曳视频（underwater towed video）与静态摄影（stills photography）观测底栖生境（benthic habitats），以及海洋潮汐与波浪生成流（wave-generated currents）测量，绘制海底测深（seabed bathymetry）图并表征底栖环境（benthic environments）。数据与样本由国防科学技术组织（DSTO）的“金布拉”号研究船采集。海底测深制图、采样及潮汐/波浪测量集中于杰维斯湾南部一个3×5公里的测网（survey grid）（达令路测网，DRG）内，该测网包含湾口区域。在DRG以外的代表性生境类型区，还开展了额外采样、静态摄影及测线沿线的海底测深制图。north2_1m是杰维斯湾东北区块反向散射栅格（backscatter grid）的ArcGIS图层（ArcGIS layer），由调查区域处理后的EM3002与EM3002D反向散射数据通过CMST-GA多波束处理流程生成。本数据集是对CERF海洋生物多样性中心的一项贡献。