Acquisition and observation logs for seabed video and sediment samples from Stellwagen Bank on U.S. Geological Survey field activity 2015-062-FA, aboard the R/V Auk, Oct. 21 and 22 and Nov. 3 and 4 2015 (PDF files)

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen Bank National Marine Sanctuary, and the data collected will aid research on the ecology of fish and invertebrate species that inhabit the region. The Sanctuary's research vessel, R/V Auk, visited 75 locations on Stellwagen Bank at which a customized Van Veen grab sampler (SEABOSS) equipped with a video camera and a CTD was deployed in drift mode to collect sediment for grain-size analysis, video imagery of the seabed, and temperature, conductivity, and depth measurements of the water column. Additional information regarding this field activity is available from https://cmgds.marine.usgs.gov/fan_info.php?fa=2015-062-FA.

本野外作业是针对马萨诸塞州波士顿外海域的斯特尔瓦根班克国家海洋保护区（Stellwagen Bank National Marine Sanctuary）开展地质基底测绘工作的组成部分。本次工作的总体目标是依托多波束声呐数据与海底采样，制作比例尺为1:25000的高分辨率解译地图，用以展示该区域的表层地质与海底沉积物动力学特征。本次科考航次与斯特尔瓦根班克国家海洋保护区合作实施，所采集的数据将为栖息于该区域的鱼类与无脊椎动物物种的生态学研究提供支撑。该保护区所属科考船“奥克号”（R/V Auk）在斯特尔瓦根班克海域布设了75个作业站位，在每个站位均以走航模式部署搭载了摄像机与温盐深仪（CTD，Conductivity, Temperature, Depth）的定制化范维恩采泥器（SEABOSS），用于采集粒度分析所需的沉积物样本、获取海底视频影像，并测量水柱的温度、电导率与水深数据。可通过以下链接获取本次野外作业的更多相关信息：https://cmgds.marine.usgs.gov/fan_info.php?fa=2015-062-FA。