US-Italy Cooperative Research: International Collaboration: Flow Hydraulics Along Step-Pool Channels

02169551 Wohl这个为期一年的奖项是为了表彰美国和意大利在阶梯池通道流动水力学方面的合作，获奖者包括科罗拉多州立大学的Ellen Wohl和意大利帕多瓦大学的Mario Lenzo。该项目的目标是为正在进行的阶梯池水力学实验和现场研究增加一个国际层面。该项目的目标是通过对里约热内卢带的研究，为科罗拉多落基山脉东圣路易斯溪的测量提供比较数据，里约热内卢带是意大利东部阿尔卑斯山脉的一个5公里2的分水岭，经历周期性的逐步破坏稳定的洪水，然后是逐步重建。美国研究人员带来了科罗拉多落基山脉阶梯池水力学方面的专业知识，那里的阶梯池通道非常稳定，不允许在阶梯重组过程中直接测量水力参数。此外，这位意大利研究人员在里约热内卢隔离带的丰富经验，包括10年的自动测量数据，以及对众多河道河段的详细实地调查，这些调查有助于研究与洪水相关的流量和沉积物运输增加后的阶梯池演变。此次合作产生的数据有望有助于提高对美国和意大利团队以及里约热内卢Cordon盆地其他研究人员非常感兴趣的阶梯池水力学的理解。这项研究的一个更广泛的影响在于为两名美国博士生提供了访问不同领域站点、研究方法和研究社区的机会。该研究的第二个影响将是增加对高坡度河道机制的理解和预测，这些河道向低地地区提供了不成比例的大量水和沉积物，与低地河道相比，它们面临着与气候变化和人类活动相关的巨大变化风险。

0216951WohlThis one-year award for US-Italian collaboration in flow hydraulics along step-pool channels involves Ellen Wohl at Colorado State University and Mario Lenzo at the University of Padova in Italy. The objectives of the project are to add an international dimension to an ongoing experimental and field study of step-pool hydraulics. The goal of the project is to provide comparative data to measurements at East St. Louis Creek in the Colorado Rocky Mountains through a study of the Rio Cordon, a 5 km 2 watershed in the eastern Italian alps, which experiences periodic step-destabilizing floods followed by step re-formation.The US researchers bring to the collaboration expertise in the step-pool hydraulics in the Colorado Rockies, where the step-pool channels are very stable and do not permit direct measurement of hydraulic parameters during step-reorganization. This is complemented by the Italian researcher's extensive experience of the Rio Cordon, including ten years of automatically measured data, in addition to detailed field surveys of numerous channel reaches which have facilitated the study of step-pool evolution following flood-associated increases in discharge and sediment transport.The data resulting from this collaboration are expected to contribute to an improved understanding of step-pool hydraulics of great interest to both US and Italian groups, and to other researchers working in the Rio Cordon basin. One broader impact of this research lies in the access to diverse field sites, research methods, and research communities for two US Ph.D. students. A second impact of the research will be increased understanding and prediction of the mechanics of high-gradient channels, which supply a disproportionately large amount of water and sediment to lowland regions, which are at great risk than lowland channels for alterations associated with climate change and human activities.