U.S.-New Zealand Cooperative Research: Gradient-Related Trends in Mountain Channel Geometry

该奖项支持科罗拉多州立大学的Ellen Wohl教授和新西兰坎特伯雷林肯大学的Timothy Davies教授之间的合作研究项目。虽然山区为许多地区提供了主要水源，并产生了不成比例的大量全球泥沙收支，但我们对沿山区河道运行的基本过程知之甚少。该项目将调查山区河流，以了解潜在的控制变量(山谷坡度、流量、基岩底质阻力和当地泥沙供应)和响应变量(河道几何形状和水流水力学)之间的关系。这项研究将在新西兰南岛西北部进行，那里的山区集水区基本上不受人类活动的影响。所获得的知识应有助于制定山区流域的有效管理方案。该项目将受益于美国和澳大利亚机构的专业知识和设施，并将包括美国学生积极参与国际合作。

0215134WohlThis award supports a collaborative research project between Professor Ellen Wohl of Colorado State University and Professor Timothy Davies of Lincoln University in Canterbury, New Zealand. While mountainous regions provide the major water source for many regions and produce a disproportionately large amount of the global sediment budget, we know relatively little about the basic processes operating along mountain river channels. This project will investigate mountain rivers to understand relationships between potential control variables (valley gradient, discharge, bedrock substrate resistance, and local sediment supply) and response variables (channel geometry and flow hydraulics). The study will be conducted on the northwest side of the South Island of New Zealand where mountainous catchments remain largely unimpacted by human activities. Knowledge gained should help in developing effective management schemes for mountain drainage basins. This project will benefit from the expertise and facilities of both the U.S. and Australian institutions, and will include the active participation of American students in the international collaboration.