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

Hunt 0722448提供资金支持一项服务提案，该提案将在希利号春季（2007年）巡航期间对白令海大陆架进行广泛的温度、盐度、营养盐和浮游动物观测。 PI特别建议做以下事情： 在沿着为2007年希利航行商定的断面收集水文地理资料（温度、盐度、荧光、PAR、透射计数据、氧气）。. 在每一个海洋站，每隔一段时间收集水柱样本，以便在船上分析营养物（硝酸盐、亚硝酸盐、硅酸盐、磷酸盐、氨），并收集其他最佳环境调查人员提供的任何样本（例如，生产力模型、放牧实验、孵化等的样本）。选定的深度如下：10米至50米的间隔，25米的间隔50米至200米，以及在调查人员同意的选定深度上超过200米的铸件。. 收集冰流上的冰芯，并对它们进行营养、盐度、温度和叶绿素的采样。. 在开放的沃茨和冰内的站点收集中型浮游动物样本。将在样带的每第二个或第三个站点以及前沿的每个站点收集样本。. 滴定氧气，用于CTD O2传感器的校准。. 在选定的地点收集和冷冻叶绿素样本，并在巡游结束后在PI实验室进行处理。. 根据船上ADCP提供垂直剪力估算值。他们将收集白令海生态系统研究所调查人员所需的物理和化学数据并进行质量控制;绘制白令海大陆架的物理和化学结构图;及时向所有其他调查人员提供所有物理和化学数据;并对物理和化学数据进行解释和分析。

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.