Instrumented Remotely Operated Vehicle (ROV) under-ice observations

Data were collected during deployments of an instrumented Remotely Operated Vehicle on 5 sampling days to determine sea ice physical properties and measure transmitted under-ice radiance spectra (combined with surface irradiance measurements) to estimate the spatial distribution and temporal development of ice algal biomass in land-fast sea ice. The ROV was instrumented with a navigation/positioning system (linked to surface GPS), upward-looking sonar and accurate depth sensor (Valeport 500 (to determine sea-ice draft)), and a upward-looking TriOS Ramses radiance sensor as well as several video-cameras collecting under-ice footage. Parallel measurements included surface irradiance measurements.A readme file in the download explains the folder structure of the dataset.本数据集采集自5个采样日搭载传感设备的遥控无人潜水器（Remotely Operated Vehicle，ROV）的水下布放作业，旨在测定海冰物理特性、测量透射冰下辐射光谱（结合地表辐照度测量数据），以估算固定海冰中冰藻生物量的空间分布与时间演化规律。该ROV搭载了导航定位系统（对接地表GPS）、向上观测声呐与高精度深度传感器（Valeport 500，用于测定海冰吃水深度）、向上式TriOS Ramses辐射传感器，以及多台采集冰下影像的摄像机。同步配套测量包含地表辐照度测量。下载包中的README文件对该数据集的文件夹结构进行了说明。