Collaborative Research: Dye Tracer and Modeling Investigations of Cross-Shelf Circulation during Coastal Upwelling
合作研究:沿海上升流期间跨陆架环流的染料示踪剂和模拟研究
基本信息
- 批准号:0609368
- 负责人:
- 金额:$ 1.85万
- 依托单位:
- 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:2005-08-29 至 2006-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Austin0136529Field and simulation studies will be used to determine where upwelled water originates, i.e. solely from the bottom boundary layer (BBL) or from a thicker region of the lower layer fluid, and where the displaced surface water goes, e.g. offshore in the the surface layer or, through subduction, to intermediate layers. Five dye studies, using fluorescene and rhodamine-WT, are proposed for the upwelling region over the Oregon shelf. Releases will occur in three different locations - beneath and inshore of the upwelling jet, in the BBL beneath the jet where onshore movement is expected, and inshore of the jet, just beneath the mixed layer but still in the Ekman layer, where offshore movement and possible subduction is expected. Dye will be tracked for 72 hours. The background environment will be defined by GLOBEC cruises, at least during the first field year. Three releases from the R/V Elakha will be traced during the first year. The second year will involve two larger releases from the R/V Wecoma. A version of the Princeton Ocean Model, configured for the region, will be run for comparison. Particle tracing techniques will be used to model the initial, small-scale dispersion. Both idealized situations and realistic modeling will be attempted. A 2-D ocean-going model will be used, in conjunction with buoyed GPS drifters, to track the subsurface dye patch after release. The results of the study will be a set of Lagrangian observations of cross-shelf transport pathways during upwelling. These will lead to improved understanding of circulation and mixing.
Austin 0136529现场和模拟研究将用于确定涌上水的来源,即仅来自底部边界层(BBL)或来自下层流体的较厚区域,以及被置换的地表水的去向,例如,表层的离岸或通过俯冲作用到达中间层。 五种染料的研究,使用荧光和罗丹明WT,提出了上升流区域的俄勒冈州货架。 释放将发生在三个不同的位置-上升流喷流之下和近岸,喷流之下的BBL中,预计会有向岸运动,以及喷流的近岸,即混合层之下,但仍在Ekman层中,预计会有离岸运动和可能的俯冲。 染料将被跟踪72小时。 至少在第一个实地年,背景环境将由全球环境工程公司的考察确定。 在第一年将追踪从“Elakha”号研究船释放的三次导弹。 第二年将涉及两个更大的版本从R/V韦科马。 为该区域配置的普林斯顿海洋模型版本将用于比较。 粒子追踪技术将用于模拟初始的小规模扩散。 理想化的情况和现实的建模将尝试。 一个二维的远洋模型将被用来与浮标GPS漂移,以跟踪释放后的地下染料补丁。 这项研究的结果将是一套关于上升流期间跨大陆架迁移路径的拉格朗日观测结果。 这将导致更好地理解循环和混合。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Jay Austin其他文献
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