GLOBEC: Collaborative Research: Mesoscale and Finescale Mapping of Physical and Biological Fields in the Northern California Current System

GLOBEC：合作研究：北加州洋流系统物理和生物场的中尺度和精细尺度测绘

• 批准号: 0001035
• 负责人: Timothy Cowles
• 金额: $ 172.13万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-15 至 2005-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001035&HistoricalAwards=false
• 关键词: GLOBEC; Collaborative; Research; Mesoscale; Finescale

GLOBEC Collaborative Research: Mesoscale and Finescale Mapping of Physical and Biological Fields in the Northern California Current systemThis project will address the mesoscale physical and biological oceanographic distributions and processes that influence juvenile salmonid habitat along the Oregon/California coast. The PIs will characterize, across a range of spatial scales, the circulation patterns associated with upwelling fronts and coastal jets, particularly in response to coastal promontories such as Cape Blanco. These patterns will be evaluated in the context of the retention and/or loss of phytoplankton and zooplankton biomass and species within the coastal system in both spring and late summer. An instrumented, towed, undulating vehicle (a SeaSoar) will be used to map physical and biological distributions over spatial scales of 5-30 km. The SeaSoar will be equipped with appropriate sensors/instrumentation to measure physical fields (conductivity, temperature, depth), phytoplankton and bio-optical parameters (multiwavelength fluorometers and multi-wavelength absorption meters), copepod and small euphausiid mesozooplankton (Optical Plankton Counter), and large euphausiids and fish (HTI Acoustics system) for the mesoscale region extending from Newport, OR to Eureka, CA. In addition, there will be continuous underway surface sampling and along-track Acoustic Doppler Current Profiling (ADCP) of water transport. Immediately following each mesoscale survey will be a sequence of interconnected finescale mapping surveys of a region ca. 50 km offshore by 80 km along-shore, followed by process-oriented field studies. The different sampling regions are expected to display contrasting juvenile salmonid habitat properties due to the offshore transition of the main jet of the California Current at Cape Blanco which results in distinctly different physical and biological regimes north and south of the Cape.

GLOBEC合作研究：北加州洋流系统物理和生物领域的中尺度和精细测绘该项目将研究影响俄勒冈/加利福尼亚海岸鲑鱼幼鱼栖息地的中尺度物理和生物海洋学分布和过程。pi将在一定的空间尺度上描述与上升流锋面和沿海喷流相关的环流模式，特别是对布兰科角等沿海海角的响应。这些模式将在春季和夏末沿海系统内浮游植物和浮游动物生物量和物种的保留和/或损失的情况下进行评价。将使用一种带仪器的拖曳起伏车辆（SeaSoar）来绘制5-30公里空间尺度上的物理和生物分布图。“海洋之星”将配备适当的传感器/仪器，用于测量物理场（电导率、温度、深度）、浮游植物和生物光学参数（多波长荧光计和多波长吸收计）、桡足类和小型磷虾类中型浮游动物（光学浮游生物计数器），以及大型磷虾类和鱼类（HTI声学系统），用于从纽波特延伸到尤里卡的中尺度区域。此外，将进行连续的水面采样和沿航迹声学多普勒水流分析（ADCP）。紧接在每个中尺度调查之后，将是一系列相互关联的精细比例尺测绘调查，范围为离岸50公里，沿岸80公里，然后是面向过程的实地研究。由于加州洋流的主要射流在布兰科角的近海过渡，不同的采样区域预计会显示出不同的鲑鱼幼鱼栖息地特性，这导致了开普角北部和南部明显不同的物理和生物制度。