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.

0526634/0526231智力优点：该项目将继续观察和了解华盛顿州和俄勒冈州附近大陆坡（卡斯卡迪亚斜坡）上高产的东北太平洋边界流区域的物理和生物学，并具有自主、持续的存在。一年多来，Seagliders（远程自主水下航行器）已被部署来测量斜坡的温度、盐度、溶解度、氧气、叶绿素荧光和光学反向散射结构。华盛顿。海上滑翔机每两周收集一次离岸 220 公里大陆架边缘部分的数据，每次潜水后报告数据，部署通常持续 4-5 个月。观测的目的是通过收集高度空间和时间分辨率的观测来检测加州海流系统这一部分的季节和年际变化。使用海洋滑翔机可以进行扩展的高分辨率观测，否则如果通过船只进行的话，成本将高得令人望而却步。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 观测数据，2) 继续 Seaglider 观测计划到大陆架上空，3) 分析新收集的数据，以描述大陆架的季节和年际结构。北加州洋流系统。为了自信地描述卡斯卡迪亚斜坡地区的季节和年际变化，并解决和理解造成这种变化的（主要是平流）过程，有必要对现有的 Seaglider 重复样线进行时间扩展。现有的数据提供了关于低频变化的诱人提示，但沿两个横坡部分的 1.5 年记录太有限，无法支持定量理解。更广泛的影响：该项目的结果将提高对气候变化的物理和生物学认识。通过在持续一段时间内自主测量重要的海洋学参数，将有可能在经济重要的地区建立前所未有的气候记录。通过扩大自主横断面的空间覆盖范围，我们将能够解决和理解平流的贡献。该项目的结果将有助于了解沿海地区生态系统以及大规模海洋环流对太平洋西北地区沿海和河口条件的影响，从而使资源规划者受益。我们将继续开展外展活动，包括向当地学校进行演讲、开放日、公开演讲以及与当地、国家和国际层面的印刷和电子媒体接触。