Data for Experiments on Constriction-Pool-Widening Channel Morphology in Bedrock Canyons

Data used in experiments on constriction-pool-widening channel Morphology in Bedrock Canyons, including the morphology and flow in Black Canyon and Kelly Creek Canyon, the water and bed surface data, the morphology with and without gravel data, the cross-sectional morphology data, and erosion rate in our experiment. Bedrock canyons often exhibit a series of constriction-pool-widening morphology (CPW) that consists of a lateral constriction, a deeply scour pool formed downstream of the constriction, a channel widening at or near the pool exit. To explore how the CPWs are formed in bedrock canyons, we conducted an experiment in a flume channel with a forced lateral constriction at the canyon entrance. This dataset includes the CPWs observed in two natural bedrock canyons, Black Canyon and Kelly Creek Canyon, in British Columbia, and the CPWs formed in the flume experiments. The morphological data, water surface and bed surface data, and the erosion rate data (Excel files) can be found in the folder of Data for Figures. We presented the evolution of the three dimensional CPWs over time in the folder of Agisoft that can be viewed in the Agisoft software, and the evolution of the bed morphology with and without gravel cover over time in the folder of CloudCompare that can be viewed in the CloudCompare software. Using this dataset, our experiments show that a primary CPW can be formed by an initial lateral constriction, and more CPWs can be self-formed further downstream due to the lateral constriction formed at the downstream end of the primary CPW.

本数据集包含用于研究基岩峡谷中收缩-池-拓宽河道形态学实验所使用的数据，涵盖了黑峡谷和凯利溪峡谷的形态与水流、水面与床面数据、含砾与不含砾的形态学数据、横断面形态学数据以及实验中的侵蚀速率。基岩峡谷通常呈现出一系列收缩-池-拓宽形态（CPW），该形态由横向收缩、在收缩下游形成的深冲刷池以及池出口处或附近的河道拓宽组成。为探究基岩峡谷中CPW的形成机制，我们在峡谷入口处设置了一个强制横向收缩的渠道中进行实验。本数据集包括位于不列颠哥伦比亚省的两个自然基岩峡谷——黑峡谷和凯利溪峡谷中观察到的CPW，以及渠道实验中形成的CPW。形态学数据、水面与床面数据以及侵蚀速率数据（Excel文件）可在“数据用于图表”文件夹中找到。我们展示了三维CPW随时间演化的过程，该过程可在“Agisoft”文件夹中查看，使用Agisoft软件进行浏览；同时，床面形态随时间在有砾石覆盖和无砾石覆盖条件下的演化过程可在“CloudCompare”文件夹中查看，使用CloudCompare软件进行浏览。利用本数据集，我们的实验表明，一个主要的CPW可以通过初始的横向收缩形成，并且由于在主要CPW下游端形成的横向收缩，可以进一步自形成更多的CPW。