Vertical Sorting of Bed Material in Gravel-Bed Streams-- Insights From Long-Term Observations in East Creek, British Columbia

IF 5 1区地球科学 Q2 ENVIRONMENTAL SCIENCES

Water Resources Research Pub Date : 2025-10-17 DOI:10.1029/2025wr041119

Marwan A. Hassan, Tianqi Xing, Conor McDowell, Kevin J. Pierce, Mike Turley, Sol Leader-Cole, Enrica Viparelli

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引用次数: 0

Abstract

The vertical sorting of streambed grains is a key control on river channel stability and sediment transport rates. In this study, we report on burial depths and mobility characteristics of coarse sediment in a small gravel-bed stream using an extensive data set of nearly 1,500 magnetically tagged tracer grains, deployed and annually surveyed between 2004 and 2018. We observe that sediment burial correlates with grain size and event magnitude, and we identify correlations between the burial depths of coarse grains and their mobility, residence time, and travel distance characteristics. A particularly large event in 2007 produced significant vertical sorting which affected tracer mobility and travel distance for the remaining study duration, despite numerous subsequent sediment-mobilizing events. These insights into the linkages between grain size, event magnitude, sediment burial, and sediment transport have potential to improve our ability to predict sediment transport rates and channel stability characteristics using tracer studies.

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砾石河床河床物质的垂直分选——来自不列颠哥伦比亚省东溪长期观测的见解

河床颗粒的垂直分选是控制河道稳定性和输沙速率的关键因素。在这项研究中，我们使用了2004年至2018年期间部署并每年调查的近1500个磁性标记示踪颗粒的广泛数据集，报告了小型砾石床溪流中粗沉积物的埋藏深度和流动性特征。研究发现，沉积物埋深与颗粒大小和事件震级相关，粗颗粒埋深与其流动性、停留时间和移动距离特征相关。2007年的一个特别大的事件产生了显著的垂直分选，影响了示踪剂的流动性和在剩余研究期间的移动距离，尽管随后发生了许多沉积物动员事件。这些关于颗粒大小、事件震级、沉积物埋藏和沉积物运输之间联系的见解有可能提高我们使用示踪剂研究预测沉积物运输速率和通道稳定性特征的能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water Resources Research 环境科学-湖沼学

CiteScore

8.80

自引率

13.00%

发文量

599

审稿时长

3.5 months

期刊介绍： Water Resources Research (WRR) is an interdisciplinary journal that focuses on hydrology and water resources. It publishes original research in the natural and social sciences of water. It emphasizes the role of water in the Earth system, including physical, chemical, biological, and ecological processes in water resources research and management, including social, policy, and public health implications. It encompasses observational, experimental, theoretical, analytical, numerical, and data-driven approaches that advance the science of water and its management. Submissions are evaluated for their novelty, accuracy, significance, and broader implications of the findings.