Collaborative Research: Nearshore Canyon Experiment

合作研究：近岸峡谷实验

• 批准号: 0115850
• 负责人: Steve Elgar
• 金额: $ 77.56万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0115850&HistoricalAwards=false
• 关键词: Collaborative; Research; Nearshore; Canyon; Experiment

Subject: Elgar/Herbers/Guza abstractFunds are provided for development, testing, and improvement of circulation models driven by wave propagation and wave-breaking in the presence of abrupt nearshore topography. These will be tested using data collected from a California field site with two offshore canyons. Specific objectives include: determining how surface gravity waves propagate across a complex inner shelf topography, determining how bathymetrically-induced alongshore variations of the wave field affect shoaling, breaking, and nearshore circulation, and determining the characteristics of mass exchange between the surf zone and the inner shelf in the presence of abrupt topography. Four waverider buoys over the outer and mid shelf will provide offshore wave boundary conditions for the models and characterize the refraction over the outer shelf. Pressure cells at mid shelf will identify reflected waves from Scripps Canyon. PUVs (pressure and velocity sensors) and acoustic doppler current profilers (ADCPs) over the inner shelf will characterize inner shelf and surf zone circulation and wave fields. Drifters will be deployed and tracked. Moderate wave and low wave situations will be compared in an attempt to isolate flows induced by the canyon in the absence of wave forcing. The buoys, pressure cells, and PUVs will provide estimates of the evolution of the directional wave spectrum for comparison with model output. Various inner shelf models, including the NOPP community model, will be compared to the field data.

主题：提供了Elgar/Herbers/guza抽象筹集，用于开发，测试和改进在存在突然的近岸地形的情况下，由波传播和波浪破坏驱动的循环模型。 这些将使用从加利福尼亚州现场的两个海上峡谷收集的数据进行测试。 具体目标包括：确定表面重力波如何在复杂的内书架地形上传播如何传播，确定在波场的沿海沿岸如何影响浅滩，破裂和近岸循环，并确定在存在突破性图表的情况下表面和内架之间的质量交换特征。 外部和中架上的四个Waverider浮标将为模型提供海上波边界条件，并表征外架上的折射率。 架子中部的压力单元将识别出来自Scripps峡谷的反射波。 PUV（压力和速度传感器）和内部架子上的声学多普勒电流剖面（ADCP）将表征内架和冲浪区的循环和波场。 漂流者将被部署和跟踪。 将比较中度波和低波动情况，以试图在没有波强迫的情况下隔离峡谷引起的流动。 浮标，压力细胞和PUV将提供定向波谱的演化，以与模型输出进行比较。 将包括NOPP社区模型在内的各种内部货架模型与现场数据进行比较。