CAREER: From the Lab to the Ocean: Experimental modeling of Internal Tide Generation by Topography

职业：从实验室到海洋：地形产生内潮汐的实验模型

• 批准号: 0645529
• 负责人: Thomas Peacock
• 金额: $ 50.39万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0645529&HistoricalAwards=false
• 关键词: CAREER; Lab; Ocean; Experimental; modeling

OCE-0645529Intellectual merit: Internal-wave generation in the deep ocean is currently a very active research topic because of the recent recognition of its important role in deep-ocean mixing. The intellectual merit of the work is in the laboratory investigation of outstanding, fundamental issues regarding internal-wave generation by deep-ocean bathymetry, for which there is a significant absence of experimental data. Although lab-scale, the proposed experiments are directly relevant to ocean processes. The outstanding issues addressed in study are the modal composition, energy-flux and instabilities of internal tides from 2D and 3D bathymetry. This timely investigation will expand current observational, numerical and theoretical understanding of internal-wave generation through sophisticated laboratory experiments. The experiments will generate detailed spatiotemporal data in regimes that are not amenable to current theoretical and numerical models, and for which field studies can inevitably provide only sparse data in uncontrolled environments. This research will also develop synergistic numerical modeling of the experiments.Broader impact: Internal waves impact the Earth's climate and modern-day underwater technology. Future theoretical and numerical models that have been validated by our benchmark data, made available through a website, will enhance our ability to predict the environmental and technological impact of internal waves. A new partnership between MIT and UCLA will be established that will be instrumental for the development of a non-hydrostatic ROMS model, which has promise to become a next-generation community ocean model. Through this new partnership and involvement in ocean-going research, the CAREER award will facilitate fruitful collaboration of scientific groups with different backgrounds, encouraging exchange of ideas and methodologies. The PI has included letters of collaboration from Prof. McWilliams and Assistant Prof. Alford to attest to the utility and excitement generated by the experimental results. The PI will use his state-of-the-art experimental facilities for hands-on teaching of K-12, undergraduate and graduate students. High-school and undergraduate students will perform experiments integrated with the CAREER research goals; with assessment provided by educators at MIT. A new graduate-course module on internal tides will be developed, and two Ph.D. students in the MIT-Woods Hole Joint Program, one a female, minority student, will be trained in laboratory and ocean-going research. The PI will participate in a summer program for science educators, for which he will organize sessions on ocean science. Letters of collaboration from the Center for Ocean Sciences Education Excellence, the Research Science Institute, the MIT-Woods Hole Joint Program and the Science and Engineering Program for Teachers testify their commitment to supporting the PI's education plan.

知识价值：深海内波的产生目前是一个非常活跃的研究课题，因为最近人们认识到它在深海混合中的重要作用。这项工作的智力价值在于对深海测深产生内波的悬而未决的基本问题进行实验室调查，这方面的实验数据严重缺乏。虽然是实验室规模，但拟议的实验与海洋过程直接相关。研究中的突出问题是二维和三维水深测量的模态组成，能量通量和内潮的不稳定性。这一及时的调查将通过复杂的实验室实验扩大目前对内波产生的观测、数值和理论理解。这些实验将产生详细的时空数据，这些数据不符合当前的理论和数值模型，实地研究在不受控制的环境中不可避免地只能提供稀疏的数据。更广泛的影响：内波影响地球的气候和现代水下技术。未来的理论和数值模型已经通过我们的基准数据进行了验证，通过网站提供，将提高我们预测内波对环境和技术影响的能力。麻省理工学院和加州大学洛杉矶分校之间将建立一个新的伙伴关系，这将有助于开发一个非流体静力学ROMS模型，该模型有望成为下一代社区海洋模型。通过这种新的伙伴关系和参与海洋研究，职业生涯奖将促进具有不同背景的科学团体进行富有成效的合作，鼓励交流思想和方法。PI包括来自McWilliams教授和助理教授阿尔福德的合作信，以证明实验结果的实用性和兴奋性。PI将使用他最先进的实验设施为K-12，本科生和研究生进行实践教学。高中和本科生将进行与职业研究目标相结合的实验;由麻省理工学院的教育工作者提供评估。将开发一个新的关于内潮汐的研究生课程单元，参加麻省理工学院-伍兹霍尔联合项目的学生，其中一名是少数民族女生，将接受实验室和远洋研究方面的培训。PI将参加科学教育者的暑期项目，他将组织海洋科学会议。来自海洋科学教育卓越中心，科学研究所，麻省理工学院伍兹霍尔联合计划和教师科学与工程计划的合作信证明了他们对支持PI教育计划的承诺。