Water column POM dynamics in Cascadia Margin: effects/controls on seasonal hypoxia and acidification

卡斯卡迪亚边缘水柱 POM 动态：对季节性缺氧和酸化的影响/控制

• 批准号: 1059920
• 负责人: Miguel Goni
• 金额: $ 26.62万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-03-15 至 2014-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1059920&HistoricalAwards=false
• 关键词: Water; column; POM; dynamics; Cascadia

In Cascadia Margin, strong, wind-driven upwelling during the summer months asserts control on particulate organic matter (POM), oxygen (O2) and carbon dioxide (CO2) dynamics in the region. It is the wind-driven upwelling of O2-poor, CO2- and nutrient-rich waters that make Cascadia Margin vulnerable to ocean acidification and hypoxia. A scientist from Oregon State University seeks to partner with an on-going NOAA-funded project to gather high resolution data on POM concentration and composition. Results from this study will be used to (1) determine the spatial/temporal distribution of POM in the water column of Cascadia Margin during the 2011 upwelling season at comparable resolution to the planned measurements of dissolved gases and nutrients by the NOAA group; (2) characterize the biogeochemical compositions POM from different regions and depths of the water column along Cascadia Margin to elucidate changes in its source and reactivity; and (3) relate POM concentrations/compositions to in-situ optical properties to develop algorithms. In addition, because the POM data will complement the spatial and temporal coverage of oxygen and inorganic carbon dynamics to be obtained by NOAA, both datasets can be readily integrated to critically evaluate the role of POM cycling on seasonal hypoxia and acidification.In terms of broader impacts, outreach efforts in concert with the Centers for Ocean Sciences Education Excellence Pacific Partnership would be carried out. In addition, it is anticipated that the scientist would continue his participation in workshops for community college faculty to help improve their curricula, as well as provide high school and community college teachers the opportunity to participate in research cruises. One undergraduate student recruited via the Oregon State Native Americans in Science, Engineering and Natural Resources program would be supported and trained as part of this project.

在卡斯卡迪亚边缘，强大的，风力驱动的上升流在夏季声称控制颗粒有机物（POM），氧气（O2）和二氧化碳（CO2）在该地区的动态。正是风驱动的贫氧、富二氧化碳和富营养沃茨的上升流使卡斯卡迪亚边缘容易受到海洋酸化和缺氧的影响。 来自俄勒冈州州立大学的一位科学家寻求与一个正在进行的NOAA资助的项目合作，以收集有关POM浓度和组成的高分辨率数据。 本研究的结果将用于（1）确定2011年上升流季节卡斯卡迪亚边缘水柱中POM的空间/时间分布，其分辨率与NOAA小组计划测量的溶解气体和营养物相当;（二）表征来自卡斯卡迪亚边缘沿着水柱不同区域和深度的POM的地球化学成分，以阐明其来源的变化反应性;以及（3）将POM浓度/组成与原位光学性质相关联以开发算法。 此外，由于POM数据将补充NOAA获得的氧气和无机碳动态的空间和时间覆盖范围，因此可以很容易地将两个数据集结合起来，以严格评估POM循环对季节性缺氧和酸化的作用。 此外，预计这位科学家将继续参加社区学院教师的讲习班，以帮助改进他们的课程，并为高中和社区学院教师提供参加研究航行的机会。 通过俄勒冈州土著美国人在科学，工程和自然资源方案招募的一名本科生将作为该项目的一部分得到支持和培训。