ITR: Spatio-Temporal Complexity and Nonlinear Dynamics of Coastal Ocean Flows

ITR：沿海洋流的时空复杂性和非线性动力学

• 批准号: 0218812
• 负责人: Roger Samelson
• 金额: $ 50万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0218812&HistoricalAwards=false
• 关键词: ITR; Spatio; Temporal; Complexity; Nonlinear

ITR: Spatio-Temporal Complexity and Non-Linear Dynamics of Coastal Ocean FlowsRoger M. Samelson, John S. Allen, Gary D. EgbertOregon State UniversityThe spatio-temporal complexity and non-linear dynamics of coastal ocean flows will be studied using methods adapted from recent work on the non-linear dynamics of low-dimensional systems. Stable and unstable periodic or approximately periodic solutions of a three-dimensional, numerical coastal ocean circulation model with realistic bottom topography and oscillatory atmospheric forcing will be computed and their dynamics analyzed. The linear stability and disturbance growth properties of these solutions will be studied using Floquet theory, optimal disturbance, and Lyapunov vector analyses. Applications toward ensemble forecasting methods for coastal ocean circulation will be explored. This research is expected to yield substantial new insights into the nonlinear dynamics and inherent predictability of the coastal ocean system.

沿海海洋流的时空复杂性和非线性动力学。Samelson，John S.艾伦，加里D.俄勒冈州立大学的时空复杂性和非线性动力学的沿海海洋流动将使用的方法改编自最近的工作低维系统的非线性动力学。 将计算具有真实海底地形和振荡大气强迫的三维数值沿海海洋环流模式的稳定和不稳定周期或近似周期解，并分析其动力学。 这些解决方案的线性稳定性和扰动增长特性将使用Floquet理论，最优扰动，和李雅普诺夫向量分析进行研究。 将探讨沿海海洋环流集合预报方法的应用。 这项研究预计将产生大量的非线性动力学和固有的可预测性的沿海海洋系统的新见解。