Collaborative Research: Cascadia Slope Circulation Study

合作研究：卡斯卡迪亚斜坡循环研究

• 批准号: 0526634
• 负责人: Charles Eriksen
• 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: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0526634&HistoricalAwards=false
• 关键词: Collaborative; Research; Cascadia; Slope; Circulation

0526634/0526231Intellectual Merits:This project will continue to observe and understand the physics and biology of the highly productive northeast Pacific boundary current region over the continental slope off Washington and Oregon - the Cascadia slope - with an autonomous, sustained presence. For over a year, Seagliders, long-range autonomous underwater vehicles, have been deployed to survey the temperature, salinity, dissolved, oxygen, chlorophyll fluorescence, and optical backscatter structure of the slope off. Washington. Seagliders have collected data on sections from the continental shelf edge offshore 220 km at fortnightly intervals, reporting back data after each dive, on deployments typically lasting 4-5 months. The objective of the observations has been to detect seasonal and inter-annual variability in this part of the California Current system by collecting highly spatially and temporally resolved observations. Using Seagliders makes possible extended high resolution observations that would otherwise be prohibitively expensive if carried out by ships. This three-year project will: 1) analyze more than 16 months of Seaglider observations already collected, 2) continue the Seaglider observational program to over the continental shelf, and 3) analyze the newly collected data to describe the seasonal and interannual structure of the northern California Current system. Extension in time over the existing Seaglider repeat transects is necessary to confidently describe seasonal and interannual variability in the Cascadia slope region and to resolve and understand the (primarily advective) processes that are responsible for this variability. The data in hand offer tantalizing hints at the low frequency variability, but the 1.5 year record along two cross-slope sections is too limited to support quantitative understanding.Broader Impacts:The results from this project will improve physical and biological understanding of climate change. By autonomously measuring important oceanographic parameters over a sustained period of time, it will be possible to establish an unprecedented climate record in an economically important area. By expanding the spatial coverage of the autonomous transects, we will be able to resolve and understand the contribution of advection. The results of this project will benefit resource planners by helping to understand the coastal zone ecosystem and influences of large scale ocean circulation on coastal and estuarine conditions in the Pacific Northwest. We will continue our outreach activities with presentations to local schools, open houses, public talks, and contacts with print and electronic media on local, national and international levels.

0526634/0526231Intlectual的优点：该项目将继续观察和了解高效的东北太平洋边界边界当前地区的物理和生物学，在华盛顿和俄勒冈州附近的大陆坡上 - 卡斯卡迪亚坡度 - 具有自主的持续存在。一年多来，已经部署了海格滑板，远程自动水下车辆，以调查坡度关闭的温度，盐度，溶解，氧气，氧气，叶绿素荧光和光学反向散射结构。华盛顿。 Seagliders在每两周一次的间隔中收集了来自大陆架边缘离岸220公里的部分的数据，每次潜水后都报告了有关部署通常持续4-5个月的数据。观察结果的目的是通过收集高度空间和时间分辨的观测值来检测加利福尼亚当前系统的季节性和年际变化。使用海上滑行者可以进行扩展的高分辨率观测值，如果船只进行，否则否则会非常昂贵。这个为期三年的项目将：1）分析已经收集的超过16个月的Seaglider观察结果，2）继续进行Seaglider观察计划，以在大陆架上进行，以及3）分析新收集的数据，以描述北加州当前系统的季节性和年际结构。在现有的Seaglider重复样带上的时间扩展是为了确定Cascadia斜率区域中的季节性和年际变化，并解决并理解负责此变异性的（主要对优势的）过程。手头的数据提供了低频可变性的诱人提示，但是沿两个跨斜率部分的1.5年记录过于限制，无法支持定量理解。Broader的影响：该项目的结果将改善对气候变化的物理和生物学理解。通过在持续的一段时间内自主测量重要的海洋学参数，可以在经济重要的领域中建立前所未有的气候记录。通过扩大自主样带的空间覆盖范围，我们将能够解决并理解对流的贡献。该项目的结果将通过帮助了解沿海地区的生态系统以及大规模海洋循环对西北太平洋沿海和河口条件的影响，从而使资源策划者受益。我们将继续向当地学校，开放式房屋，公共谈判以及与本地，国家和国际级别的印刷和电子媒体进行联系，继续我们的外展活动。