Multiscale computational hydrodynamics with application to lake and coastal ocean hydrodynamics

湖泊点缀着加拿大的风景，为加拿大人提供了许多好处（例如饮用水，娱乐）以及动植物的家园。加拿大南部的许多湖泊面临着人口增长的压力，而北极的湖泊预计将受到气候变化的强烈影响。作为一个物理系统，湖泊以其内部发生的大量运动为特征，从主要由风驱动的大规模运动到由流体粘度主导的小规模过程，例如发生在湖底附近的运动。大多数湖泊的一个共同特征是某种程度的温度分层，较轻（热）的流体覆盖在较密（冷）的流体上。这种分层促进了湖内部显著的波浪运动（即内波）。科学计算和计算机硬件的最新进展为改进流域尺度和湖泊近底动态过程的模拟提供了机会。

Lakes dot the Canadian landscape, providing numerous benefits to Canadians (e.g. drinking water, recreation) as well as a home for both flora and fauna. Many lakes in southern Canada face pressure from increasing population, while those in the arctic are expected to be strongly affected by climate change. As a physical system, lakes are distinguished by the vast range of motions that occur inside them, from large scale motions driven primarily by the wind, to small scale processes dominated by fluid viscosity, such as those that occur near the lake bottom. A common feature of most lakes is some degree of temperature stratification with lighter (warm) fluid overlying denser (colder) fluid. This stratification facilitates significant wave motion (i.e. internal waves) in the lake interior. Recent advances in scientific computing and computer hardware present an opportunity to improve the simulation of both basin scale and near-bottom dynamic processes in lakes.