Qualitative Hydraulics and Transport from Strata and Dynamics of Sandy Bedforms

河床形态、波纹和沙丘是沙质河流水流和泥沙运移的关键指标，因此它们对了解河流管理、海岸恢复和地表水水库沉积至关重要。此外，它们留下的沉积物是形成沉积岩的古代河流条件的记录。这些沉积物可以用来确定地下储层的形成条件，包括水和碳氢化合物。迄今为止，几乎无处不在的是，用于床型问题的模型都使用恒定的几何形状来表示床型，这些几何形状可以移动沉积物并形成地层。这与捕捉地球表面环境动态特性的河流过程模型形成鲜明对比。该项目将测试一系列假设，这些假设是通过应用河床形态行为的动态模型来解决以下问题：1)泥沙搬运力学，2)河床物质泥沙通量，以及3)河流地层学的生成。这将通过一系列实验室实验来完成，在这些实验中建立的关系将被应用于解释古代河流地层。这个项目的结果将有利于现代河流规划、地下水库建模、对地球自然历史的理解，以及与这些主题相关的应用问题。

Bed forms, ripples and dunes, are key indicators of water flow and sediment transport in sandy rivers, and therefore they are vital to understanding river management, coastal restoration, and surface water reservoir sedimentation. Additionally, they leave deposits that are a record of the ancient river conditions that create sedimentary rocks. These deposits can be used to determine the conditions of formation of subsurface reservoirs for water and hydrocarbons. To date, almost ubiquitously, models applied to bed form problems have used constant geometries representing bed forms that migrate to move sediment and create strata. This is in stark contrast to models of river processes that capture the dynamic nature of Earth's surface environments.This project will test a set of hypotheses derived by applying a dynamic model of bed form behavior to problems in 1) sediment transport mechanics, 2) bed material sediment flux, and 3) generation of fluvial stratigraphy. This will be accomplished through a suite of laboratory experiments, and relationships developed in these experiments will then be applied to interpreting ancient fluvial strata. The results of this project will benefit modern river planning, subsurface reservoir modeling, understanding of Earth's natural history, and the applied problems associated with these topics.