BEST: Impacts of Sea-ice on the Hydrographic Structure, Nutrients, and Mesozooplankton over the Eastern Bering Sea Shelf

提供Hunt 0722448 Funds是为了支持一项服务提案，该服务提案将在Healy号春季(2007年)游轮期间对白令海大陆架进行广泛的温度、盐度、营养物质和浮游动物观测。督导人员特别建议进行以下工作：收集2007年Healy邮轮共同商定的横断面上的水文(温度、盐度、荧光、PAR、透射仪数据、氧气)。。在每个海洋站以选定的间隔收集水柱样本，用于营养物质(硝酸盐、亚硝酸盐、硅酸盐、磷酸盐、氨)的船上分析，以及其他最好的调查人员提供的任何样本(例如，生产力铸件、放牧实验、孵化等的样本)。选定的深度如下：10米至50米，25米至50米，50米至200米，以及经调查人员同意的选定深度的200米以上的铸模。。收集冰流上的岩心，并对它们进行营养物质、盐度、温度和叶绿素的采样。。在开放水域和冰层内的站点收集中浮游动物样本。将在样带上每隔两个或第三个站点以及在前方的每个站点采集样本。。用于校准CTD O2传感器的滴定氧。。在选定的地点收集和冷冻叶绿素样本，并在巡航后在PIS的实验室进行处理。。提供船上ADCP的垂直切变估计值。他们将收集和质量控制BEST(白令海生态系统研究)调查人员所需的这些物理化学数据；绘制白令海陆架上方的物理化学结构图；将所有物理化学数据及时提供给所有其他调查人员；并提供物理化学数据的解释和分析。

Hunt 0722448Funds are provided to support a service proposal that will undertake extensive temperature, salinity, nutrient, and zooplankton observations on the Bering Sea shelf during the spring (2007) cruise on the Healy. The PIs specifically propose to do the following: . Collect hydrography (temperature, salinity, fluorescence, PAR, transmisometer data, oxygen) along the mutually agreed upon transects for the 2007 Healy cruise. . Collect water column samples for shipboard analysis of nutrients (nitrate, nitrite, silicate, phosphate, ammonia) at selected intervals at each oceanographic station and any samples provided by other BEST investigators (e.g. samples from productivity casts, grazing experiments, incubations, etc.). The selected depths are as follows: 10-m intervals to 50m, 25m intervals 50m-200m and on casts deeper than 200m at selected depths agreed to by investigators. . Collect cores on ice flows and sample them for nutrients, salinity, temperature, and chlorophyll. . Collect mesozooplankton samples in both the open waters and at stations within the ice. Samples will be collected at every second or third station on the transects and at every station at fronts. . Titrate oxygen for calibration of CTD O2 sensor. . Collect and freeze chlorophyll samples at selected locations and process them after the cruise in the PIs' laboratory. . Provide vertical shear estimates from the shipboard ADCP. They will collect and quality control these physical and chemical data needed by BEST (the Bering Sea Ecosystem Study) investigators; map the physical and chemical structure over the Bering Sea shelf; make the all physical and chemical data available to all other investigators in a timely manner; and provide the interpretation and analysis of physical and chemical data.