Department for Environment, Food and Rural Affairs (DEFRA) MCZ: Greater Haig Fras: Multibeam, Sidescan Sonar, Benthic Sampling and Photo/Video Survey ghgf_cend1012: Western Channel & Celtic Sea (05/07/2012 - 11/07/2012)

A seabed survey for the purpose of habitat identification and mapping at the Greater Haig Fras recommended Marine Conservation Zone (rMCZ) site, west of Cornwall, UK. Comprising acoustic corridors overlying a 5 km triangular grid of ground-truth sampling stations. Three nested full coverage areas in the west, centre and east of the site. Acoustic survey by multibeam (bathymetry and backscatter) and sidescan sonar (part coverage only). Ground-truth sampling by grabs and underwater cameras (video & stills images). Broadscale habitat (BSH) and habitat FOCI (Features of Conservation Interest) recorded at time of sampling and included in cruise/survey report. More in-depth interpretation to be made in a Post-Survey Site Report, following integrated assessment of acoustics and outputs from laboratory analysis of benthic samples. Central, full coverage area targeted to provide data sets against which the capabilities of AutoSub (an AUV owned by National Oceanogrephic Centre (NOC), Southampton, UK) could be tested. These data are archived with the Marine Environmental Data and Information Network (MEDIN) Data Archive Centres (DACs) including the British Geological Survey (BGS) DAC for geology and geophysics, The Archive for Marine Species and Habitats Data (DASSH) and the United Kingdom Hydrographic Office (UKHO) bathymetry DAC. The full site data package including raw is also available on request from BGS.本数据集为英国康沃尔郡以西的大黑格弗拉斯推荐海洋保护区（recommended Marine Conservation Zone, rMCZ）场地开展的生境识别与制图海底调查项目数据。本次调查包含沿5公里三角形地面验证采样站网格布设的声学测线作业，该场地西、中、东区域各设有一处嵌套式全覆盖作业区。声学调查采用多波束系统（开展水深测量与反向散射测量）及侧扫声呐（仅覆盖部分区域）；地面验证采样采用采泥器与水下摄像设备（采集视频与静态图像）。采样期间记录了广域生境（Broadscale Habitat, BSH）及保护关注特征生境（Features of Conservation Interest, FOCI）相关信息，并收录于航次调查报告中。后续将在《调查后场地报告》中，结合声学数据综合评估与底栖样品实验室分析结果，开展更深入的生境解译工作。场地中央的全覆盖区域旨在提供数据集，用于测试自动水下航行器AutoSub的作业性能，该设备为英国南安普敦国家海洋学中心（National Oceanographic Centre, NOC）所属的自主水下航行器（Autonomous Underwater Vehicle, AUV）。本批数据已归档至海洋环境数据与信息网络（Marine Environmental Data and Information Network, MEDIN）旗下的各数据归档中心（Data Archive Centres, DACs），包括英国地质调查局（British Geological Survey, BGS）地质与地球物理DAC、海洋物种与生境数据档案馆（The Archive for Marine Species and Habitats Data, DASSH）以及英国水道测量局（United Kingdom Hydrographic Office, UKHO）测深DAC。完整的场地数据包（含原始数据）亦可通过向英国地质调查局（BGS）提出申请获取。