SGER: Measurements of the Velocity Field Associated with Interleaving

SGER：与交织相关的速度场的测量

• 批准号: 0741426
• 负责人: Kelvin Richards
• 金额: --
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-01 至 2009-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0741426&HistoricalAwards=false
• 关键词: SGER; Measurements; Velocity; Field; Associated

Intellectual Merit: This project is directed at evaluating a novel technique for measuring the horizontal velocity field in the ocean at small vertical scales with a vertical resolution of order 2 meters. There is a growing appreciation that small scales in the ocean can have a profound effect on the larger scale dynamics and fluxes in the ocean. These scales are often poorly resolved in general circulation models and their impacts are not well understood. The present study will examine these scales in the interleaving region of the equatorial Pacific in order to address two major questions: what is the formation mechanism of the interleaving, and what is the velocity field associated with it. In order to measure these velocity fields at high vertical resolution, data from a shipboard ADCP will be blended with data from a lowered ADCP. There are technical questions regarding matching measurements in the vertical as well as resolution questions that must be addressed with data from the field. The project is exploratory because it is aimed at testing a promising, novel tool for measuring the horizontal velocity field at high vertical resolution. In addition, its timing is critical to take advantage of an impending cruise to the Equatorial Pacific. Broader Impacts:The software that will be developed for this will be made readily available to the community. This technique, if successful, will allow a thorough examination of small vertical scale velocities associated with phenomena such as mid-latitude fronts and sub-mesoscale features using equipment that is readily available and reasonably easy to use. It is expected that measurements such as these will lead to the examination of, as yet, unexplored features in the ocean. The proposal includes the training of a postdoc at sea and with the data.

智力优势：该项目旨在评估一种新的技术，用于测量海洋中水平速度场，垂直分辨率为2米。人们越来越认识到，海洋中的小尺度可以对海洋中更大尺度的动力学和通量产生深远的影响。这些尺度在大气环流模式中往往分辨率很差，其影响也没有得到很好的理解。本研究将探讨这些尺度在赤道太平洋交错区，以解决两个主要问题：什么是交错的形成机制，什么是与之相关的速度场，为了测量这些速度场在高垂直分辨率，从船上ADCP数据将混合从降低ADCP数据。 有一些关于垂直匹配测量的技术问题以及必须用现场数据解决的分辨率问题。该项目是探索性的，因为它的目的是测试一个有前途的，新的工具，测量水平速度场在高垂直分辨率。此外，它的时机对于利用即将进行的赤道太平洋巡航至关重要。更广泛的影响：为此开发的软件将随时提供给社区。这种技术如果成功，将能够利用现有和相当容易使用的设备，彻底检查与中纬度锋和次中尺度特征等现象有关的小垂直尺度速度。预计这样的测量将导致对海洋中尚未探索的特征的研究。该提案包括在海上培训一名博士后并提供数据。