Sediment Transport and Fluvial Bedrock Erosion in an Evolving Mountain Belt: A Field Study

9903196SlingerlandThe本研究的目的是进行一个现场测试，以更好地定义基岩侵蚀发生在流排水台湾中央山脉的机制，并量化作为流水力和泥沙输运变量的函数的基岩侵蚀量。为了实现这一目标，我们必须测量推移质输沙率在选定的现场在研究区域。因此，第二个目标是应用被动声学技术的索恩和他的同事，在海洋条件下开发的，以测量这些陡峭的山溪推移质运输。据我们所知，这是在这方面的第一次尝试。其结果将是一个数据集的基岩磨损率作为当地沉积物通量和其他重要变量的函数，如固有的基岩可蚀性，通道水力学，和运输中的材料的粒度。该数据集将用于测试理论推导，最终目标是基于过程的，现场校准的河流基岩切割法。

9903196SlingerlandThe objective of this research is to conduct a field test to better define the mechanisms of bedrock erosion occurring in streams draining the Central Range of Taiwan, and to quantify the amount of bedrock erosion as a function of stream hydraulic and sediment transport variables. In order to accomplish this goal we must measure bedload transport rates at selected field sites in the study area. Therefore a secondary goal is to apply the passive acoustic technique of Thorne and colleagues, developed under marine conditions, to measure bedload transport in these steep mountain streams. To our knowledge it is afirst attempt at this effort. The result will be a dataset of bedrock wear rates as a function of local sediment fluxes and other important variables such as intrinsic bedrock erodibility, channel hydraulics, and grain size of the material in transport. This dataset will be used to test theoretical derivations, with the ultimate goal a process-based, field calibrated fluvial bedrock incision law.