Presidential Young Investigator Award: Coastal Processes in Large Rivers

该奖项通过国家科学基金会总统青年研究员计划为Bernard Bauer博士提供支持。该计划的目标是为一些国家最杰出和最有前途的年轻科学和工程教师提供研究支持。该奖项旨在提高美国学术机构的能力，以满足学术和工业研究和教学对高素质科学家和工程师的需求。该奖项将允许鲍尔博士继续他在地貌过程的研究，特别是流体塑造地貌的机制。这位研究者在将最初在沿海研究中开发的模型和分析技术用于分析溪流方面一直处于领先地位。他将通过详细探索溪流中波浪状流体振荡对河岸的影响来继续这项综合研究，扩展目前构成大多数河道形态模型基础的单向流动模型。这项研究将包括一系列的实验和实证分析，重点是将海滩平衡模型应用于河道侵蚀和沉积，包括波高、陡度、偏度和轨道速度的测量。对电磁电流计和潜水压力传感器收集的数据进行时间序列分析，可以更准确地估计振荡运动和单向流动对河道侵蚀和沉积的相对重要性。除了加强对流体动力学和河道形态的一般理解外，本研究还将为分析由水坝或其他水流控制结构调节水流时交替排放制度的差异影响提供实用信息。

This award provides support for Dr. Bernard Bauer through the National Science Foundation's Presidential Young Investigator Program. The objective of this program is to provide research support for some of the nation's most outstanding and promising young science and engineering faculty members. The awards are intended to improve the capability of U.S. academic institutions to respond to the demand for highly qualified scientists and engineers for academic and industrial research and teaching. This award will allow Dr. Bauer to continue his research in geomorphic processes, especially the mechanisms by which fluids sculpt landforms. The investigator has been a leader in adapting models and analytic techniques originally developed in coastal studies for use in analyses of streams. He will continue this synthetic research through detailed explorations of the influence of wave-like fluid oscillations within streams on stream banks, expanding on the unidirectional flow models that currently form the basis for most models of channel morphology. This research will include a series of experimental and empirical analyses that focus on application to stream-channel erosion and deposition of beach-equilibrium models, which include measurements of wave height, steepness, skewness, and orbital velocity. Time-series analyses of data gathered by electromagnetic current meters and submersible pressure sensors will provide more accurate estimates of the relative significance of oscillatory motions and unidirectional flows on stream-channel erosion and deposition. In addition to enhancing general understandings of fluid dynamics and channel morphology, this research will provide practical information for analyses of the differential impacts of alternate discharge regimes when stream flow is regulated by dams or other flow-control structures.