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

科罗拉多州立大学的Ellen Wohl和意大利帕多瓦大学的Mario Lenzo获得了这一为期一年的奖项，以表彰美国和意大利在阶梯水池水道中的合作。该项目的目标是为正在进行的阶梯水池水力学实验和现场研究增加一个国际维度。该项目的目标是通过对里约科顿河的研究，为科罗拉多州落基山脉东圣路易斯小溪的测量提供比较数据。里奥科顿河是意大利东部阿尔卑斯山的一个5平方公里的分水岭，它经历了周期性的阶跃破坏稳定的洪水，然后进行了阶跃重组。美国研究人员将科罗拉多州落基山脉阶梯塘水力学方面的专业知识带到了合作中，那里的阶梯塘水道非常稳定，不允许在阶跃重组期间直接测量水力参数。此外，这位意大利研究人员还拥有丰富的里约科顿河经验，包括十年的自动测量数据，此外还对许多航道进行了详细的实地调查，这些调查促进了洪水导致的流量和泥沙输运增加后阶梯塘演变的研究。这次合作产生的数据有望有助于更好地理解梯级塘水力学，美国和意大利的团队以及在里约科登盆地工作的其他研究人员都非常感兴趣。这项研究的一个更广泛的影响是，两名美国博士生可以接触到不同的实地考察地点、研究方法和研究社区。这项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，高坡度河道向低地地区提供不成比例的大量水和泥沙，与低地河道相比，这些地区面临着与气候变化和人类活动相关的变化的巨大风险。

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.