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

最佳：海冰对东白令海陆架水文结构、营养物和中型浮游动物的影响

• 批准号: 0722448
• 负责人: George Hunt
• 金额: --
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0722448&HistoricalAwards=false
• 关键词: BEST; Impacts; Sea; ice; Hydrographic

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.

Hunt 0722448资金被用于支持一项服务提案，该提案将在春季（2007年）在Healy号上巡航期间对白令海陆架进行广泛的温度、盐度、营养和浮游动物观察。具体建议如下：沿着双方商定的2007年Healy巡航的横断面收集水文（温度，盐度，荧光，PAR，透射仪数据，氧气）。每隔一段时间，在每个海洋学站收集水柱样本，用于船上对营养物质（硝酸盐、亚硝酸盐、硅酸盐、磷酸盐、氨）的分析，并收集其他BEST调查人员提供的任何样本（例如，来自生产力模型、放牧实验、孵育等的样本）。所选深度如下：10米至50米，25米至50米至200米，深度超过200米的投井深度经调查人员同意。收集冰流上的岩芯，并对它们进行营养、盐度、温度和叶绿素的取样。在开放水域和冰内站收集浮游动物样本。样本将在横断面上的第二或第三个站点以及前线的每个站点收集。滴定氧气以校准CTD O2传感器。在选定的地点收集和冷冻叶绿素样品，并在巡游后在pi的实验室进行处理。从船上ADCP提供垂直剪切估计。他们将收集白令海生态系统研究人员所需的物理和化学数据并进行质量控制；绘制白令海陆架的物理和化学结构；及时向所有其他调查人员提供所有物理和化学数据；并提供物理和化学数据的解释和分析。